Complex reflection dust nebulae in the constellation of Cepheus the circumpolar region. The popular name - "The dance of demons".

This picture was photographed durin November 2015 in Rozhen observatory, Bulgaria.

Equipment: home assembled reflector 10 in., f/3.8

Mount WhiteSwan-180 with a control system «Eqdrive Standart», camera QSI-583wsg, Televue Paracorr-2. Off-axis guidecamera QHY5L-II.

LRGB filter set Baader Planetarium.

L = 20 * 900 seconds , bin.1, RGB = 15 * 300-450 seconds, bin.2 each filter. About 9 hours.

FWHM source in L filter 2.03"-2.92", sum in L channel - 2.50"

The height above the horizon from 52° to 46°, the scale of 1"/ pixel.

Processed Pixinsight 1.8 and Photoshop CS6

The Butterfly nebula (IC1318) is located in the constellation of Cygnus. The whole region is huge... Here you can only see IC1318b (upper area of nebulosity) and IC1318c (the lower area). IC1318b and c constitute a single giant HII cloud bisected by a thick obscuring dust lane known as LDN 889 which is shown in the middle of the frame.

The bright star to the top right is a class F8 star known as Sadr or Gamma Cygni. Its true location is only 750 light years away and not related to the nebulosity which is much more distant at 5000 light years.

This is a 6 pane mono mosaic. It has been stitched together using Astro Pixel Processor, whch created a seamless mosaic.

Details

M: Mesu 200

T: TMB 152/1200

C: QSI683 with 3nm Astrodon Ha filter

16x1800s in EACH pane, totalling 48 hours of exposure time.

Messier 104 a.k.a. Sombrero Galaxy

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Discovered 250 years ago, the Sombrero galaxy (The Hat) is an elliptical galaxy located just over 30 million light-years from us and can be seen between the constellation Virgo and the constellation Corvus. According to measurements made by specialists in the field, M104 has a diameter of about 40,000 light-years, being about 3 times smaller than our galaxy. The name of the Hat is given both by the angle from which we can see it, and due to that prominent ring of cosmic dust that surrounds this galaxy and which is also the main source of new star formation. Regarding the nucleus of this galaxy, with the help of special infrared measurements it was found that in the galactic center of M104 there is a massive black hole, larger than in any other galaxy located within a radius of 40 million light years around the Milky Way.

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Equipment and settings:

Mount: Skywatcher Eq6 R

Telescope: 150/750 Newtonian telescope

Camera: ASI 533MC Pro

Total integration: 4 hours.

120 light frames x 2 min + calibration frames.

Stacking in Deep Sky Stacker.

Edit in Pixinsight and Lightroom.

Tout d'abord, bonne année 2023 à tous 😁 ! On commence enfin l'année avec cette première publication qui aura su se faire attendre (traitement galère entre airglow, brume, nuages et givre ).

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✨ La pluie d’étoiles filantes des “Géminides” est la plus prolifique de l’année avec environ 150 météores/heure lors de son pic d’activité ! Le problème, c’est que ce pic arrive au milieu du mois de Décembre et la météo est souvent mauvaise à cette période. Cet hiver ne fait pas exception. On compte les nuits dégagées de ces 2 derniers mois sur les doigts d'une main 😪. C'est très frustrant de faire de l'Astro en France et encore plus dans ch'Nord ️.

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🏰 Le Donjon de Bours est un vestige médiéval situé sur la commune de Bours. Classé monument historique depuis 1965, il est érigé au XIVᵉ siècle. Il s'agit de l'un des plus anciens logis nobles de la région.

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🚗 Il m'a fallu parcourir 600km en 4 nuits pour éviter les nuages et ainsi tenter de capturer des météores. Voici tous les détails de ces nuits d'acquisition (bien-sûr, il faisait nuageux partout en France le 14 décembre, nuit du maximum) :

Triple setup (All Sky Camera, 14mm et 15mm)

All Sky Camera en remote à domicile

Nuits du 11-12-13-15 Décembre sur différents spots

4500 clichés entre 15 et 20 secondes (environ 22h d'acquisition au total)

112 météores confirmés au total (31 dans le champ ici)

20h de tri et de traitement

Bortle 5 à 7

Ciel : pano 9 tuiles, stack de 3x90s ISO1250 f/2 au 35mm chacune

Sol : pano 6 tuiles, pose unique 30s ISO1600 f/2 au 35mm

Orientation ciel-sol conservée, sur le même spot. Météores en position d'origine

Canon France EOS Ra + EOS R6 + EOS 6Da + 35mm f/1.4L II USM

Sky-Watcher USA Star Adventurer GTi

This nebula also called the Lambda Centauri Nebula is found in the constellation Centaurus.

H: 22x30m

O: 24x30m

S: 25x30m

Total Integration = 35.5hrs

Telescope: PW17

Camera: FLI ML16803

Remote Data from Deepskywest El Sauce Observatory, Chile.

The **Eagle Nebula**, also known as **Messier 16 (M16)** or **NGC 6611**, is a stunning region of active star formation located about **7,000 light-years** from Earth in the **constellation Serpens**. It is best known for containing the **Pillars of Creation**, towering columns of gas and dust famously photographed by the **Hubble Space Telescope** in 1995.

This vast nebula spans about **70 by 55 light-years** and consists of **interstellar gas, dust, and young, hot stars** that illuminate and shape the surrounding material. The Eagle Nebula is a **stellar nursery**, where massive new stars are born from collapsing clouds of gas. These young stars emit intense ultraviolet light and powerful winds that sculpt the nebula’s features and erode the dense pillars from which they formed.

The "eagle" shape that gives the nebula its name is created by dark, silhouetted dust lanes against the bright background of glowing hydrogen gas. The Eagle Nebula is both a scientifically important object and a visually iconic one, offering astronomers insight into how stars and planetary systems form and evolve over time.

Shot in New Orleans, LA

Bortle 8 Skies

TEC140

AP900

SHO: 21 / 20 / 24 x15m

Total Integration = 16.25h

SXT/LF/SHO/NBNorm/NXT/NBStars/HT/Conv/Recreen

ColorEfex/Curves/Sat

Some weeks ago I published a “widefield” of the Andromeda Galaxy but then decided to take another rendition of it, this time with a smaller FOV and focusing in bringing out the hydrogen clouds (the pink spots) and the dust clouds (the brown filaments) close to the nucleus, which is not so common to see.

In the end I enjoyed it so much that took a crop and also publish as a separated image.

I hope you enjoy.

Shot at Barcarena, Portugal on Sep.28/29, Oct.4/18 of 2021 and Oct.18, Nov.1 2022

Technical details:

RGB: 472x180s (23h36)

Ha: 55x600s (9h10)

LUM: 199x120s (6h38)

Total integraton: 39h24m

RedCat 51 | QHYCCD 268C | Skywatcher EQ6-R Pro | TSOptics IV/IR 2’’ | TS Optics Triplet APO 800/115 | TS Optics TSFLAT2 0.79x | QHYCCD 268C | QHYCCD 268M | Omegon IV/IR Cut 2'' | Astronomik Ha 6nm | RBFocus Myrrdin 2.3 | RBFocus Gaius-S

Acquisition: N.I.N.A. | Processing: Pixinsight

A classic shot from my backyard in New Orleans.

Televue NP-101IS

Optolong L-Ultimate Dual Band Filter

ZWO ASI071MC Pro

Takahashi EM-200

35x5m Exposures

🌀 M81 & M82 // Galaxies de Bode et du Cigare

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✅ Tout premier test du télescope avec la caméra refroidie et les premiers résultats sont encourageants ! C’est d’ailleurs également ma toute première mosaïque du ciel profond (2 tuiles). Malgré un échantillonnage juste, le niveau de détail atteint est tout de même assez bluffant. J’ai pu profiter de la qualité du ciel nocturne de notre spot favori avec @otsugaphoto pour essayer d’avoir rapidement du signal. Néanmoins le faible temps de pose induit encore beaucoup de bruit et je ne peux pas tirer les détails au maximum comme j'aimerai. Il y a par exemple les IFN qui apparaissent au traitement si je tire fort sur les curseurs mais je préfère ne pas détériorer la qualité de l'image.

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🌌 M81 est une galaxie spirale-barrée située qui fut découverte par Johann Elert Bode en 1774. La répartition de la masse de la galaxie n’est pas homogène en raison de l’effet de marée dû à la proximité (~ 150 000 AL) d’une autre galaxie moins massive.

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M82, la galaxie du Cigare, est une galaxie irrégulière située dans la constellation de la Grande Ourse. Avec M81, ces deux galaxies forment avec d’autres un groupe de galaxies proche du nôtre. M82 représente le prototype d’une galaxie irrégulière. Son noyau, qui semble avoir énormément souffert d’un rapprochement avec M81 il y a quelques centaines de millions d’années, se trouve dans une phase de violente activité stellaire et présente de remarquables raies sombres. Il s’agit d’une galaxie à sursaut de formation d’étoiles. De grandes quantités de matières sont éjectées à environ 1 000 km/s de la galaxie. On suppose que ces éjections sont dues à l’explosion de supernovas.

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M81 :

-Type d'objet : Galaxie spirale

-Distance : 12 M d’AL

-Dimensions : 96 000 AL

-Magnitude apparente : 6.9

M82 :

-Type d'objet : Galaxie irrégulière

-Distance : 14,7 M d’AL

-Dimensions : 47 000 AL

-Magnitude apparente : 8.4

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EXIF :

-@zwoasi 533MM Pro

-Newton 250/1000 tube maison fibre/carbone

-@sky_watcher_official AZ-EQ6

-Asiair plus + EAF

-Omegon 50/180

-Zwo ASI 120MM mini

-2 nuits (23 et 24/06/23)

-L = 100*120s

-R/V/B = 3*10*180s

-Ha = 10*600s

-6h30 au total (3h15 par tuile)

-Lune moyenne à 31%

-Bortle 4

-Pix

Comet:

60x20s red

60x20s green

60x20s blue

180sx20s Luminanz

Stars:

11x180s red

11x180s green

11x180s blue

30x180s Luminanz

Equipment:

Epsilon 130D dual rig

QHY268m + CFW3M

TS2600MP (Touptek IMX571) + ZWO EFW

Astronomik DeepSky RGB

Astronomik MaxFR

Pegasus NYX-101

23.10.2024 19:28 - 20:44

[ 2022 ]

Premier post de cette nouvelle année. J'en profite pour vous souhaiter une excellente santé, du bonheur dans vos vies mais aussi une montagne de merveilleux clichés !

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Quoi de mieux qu'une photo de ma Champagne natale pour commencer 2022 🍇 ?! Voici une image que j'avais teaser il y'a plusieurs mois déjà, elle a été prise au printemps dernier au moulin de Verzenay. Ayant assez peu l'occasion de faire de l'Astro dans la Marne, je voulais marquer le coup en essayant de réaliser mon premier "deepscape", un astro-paysage au téléobjectif en ayant au moins une nébuleuse du ciel profond.

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La fin du printemps était une période idéale pour réaliser un deepscape ici. La Voie Lactée se lève très horizontalement et la région du Cygne se trouve à l'Est juste au dessus du coteau ou se trouve le moulin, parfait pour une prise de vue en contre-plongée. C'est aussi le moment de la floraison des vignes, les feuilles sont d'un vert pétant et on devine timidement les premiers raisins.

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Au 135mm, je n'avais pas l'ensemble du paysage ou alors pas assez de ciel. J'ai alors réalisé un panorama de 4 photos verticales. Quatre pour le sol sans suivi et quatre pour le ciel avec suivi. Pour contrer la pollution lumineuse de Reims qui se trouve 20km dans mon dos, j'ai utilisé le filtre Nisi Natural Night. Vous pouvez distinguer facilement la nébuleuse de l'Amérique du Nord à gauche et la nébuleuse du papillon (Sadr) à droite. Ce sont des cibles assez facile avec un APN défiltré car très lumineuses.

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Sol : 1x4x30s iso 1000 f/2.8 fin de l'heure bleue.

Ciel : 8x4x90s iso 1600 f/2.8 Star Adventurer.

Canon 6Da + Samyang 135mm f/2 + Nisi Natural Night, traitement PI & PS.

Même spot et même orientation, tout est fait au même endroit et sur la même nuit.

www.astrobin.com/unoexu/

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• Sky-Watcher Quattro 250P

• Sky-Watcher EQ8-R Pro

• ZWO ASI294MM-Pro

• Astronomik L: 27x300s bin1 gain 0

• Astronomik RGB: 30x300s bin2 gain 125

• ZWO Hα 7nm: 41x600s bin1 gain 200

• ZWO Hα 7nm: 13x300s bin1 gain 200

• ZWO OIII 7nm: 4x600s bin2 gain 200

• ZWO OIII 7nm: 36x300s bin2 gain 200

(total integration 16.3h)

• ZWO OAG & ASI290Mini guide cam

• TS GPU coma corrector

• ZWO EFW, ZWO EAF & Pegasus Astro Ultimate Powerbox 2

Trevinca, Valding, Spain

Bortle 3, SQM 21.8

processed with Pixinsight

Equipment:

Scope: GSO 8" f/4 with 2" Moonlite autofocuser, flocked

Coma corrector: TS GPU

Mount: EQ6-R

Camera: Nikon D750 mod

Guide scope: ZWO 280/60

Guide camera: ZWO ASI 120MC-S

Filter: RGB - Baader UV/IR cut, Ha - Antlia ALP-T

Acquisition:

Location: central Poland, Bortle 5/6

Lights:

- RGB: 119x120s ISO 1600 per panel

- ALP-T: 32x480s ISO 1600 per panel

Darks: none

Flats: x80 per night

Darkflats: x80 per night

Bias: x100

Total exposure time: 24h 42min

I tested my 500 mm lens with iOptron CEM60EC mount... I am not so satisfied with result, picture is litle bit blury because no auto guiding and noisy because short acquisition. I lookng forward to your comments, advises and tips 🙏

OBJECT: M101, Pinwheel Galaxy, Const. Uma, apparent mag. 7,86, apparent dim. 29 x 27 arcmin. FOV 3,24 x 2,03 arcdeg, sampling rate 1,79 arcsec / px, cropped 1,53 x.

GEAR: Nikon Z7 Kolari Full Spectrum + Nikkor 500/5,6 PF, No filter, Tracking mount iOptron CEM60EC - 3 star alignment, no auto guiding.

ACQUISITION: May 20, 2020, CZ. Lights 13x, Darks 5x, Bias 5x, Flats 5x. Exposure 300 s, ISO 400, f 5,6

POST PROCESSING: Stacking APP, Adobe PS.

Explanation: At the down right, large spiral galaxy NGC 1055 joins spiral Messier 77 in this sharp cosmic view toward the aquatic constellation Cetus. The narrowed, dusty appearance of edge-on spiral NGC 1055 contrasts nicely with the face-on view of M77's bright nucleus and spiral arms. Both over 100,000 light-years across, the pair are dominant members of a small galaxy group about 60 million light-years away. At that estimated distance, M77 is one of the most remote objects in Charles Messier's catalog and is separated from fellow island universe NGC 1055 by at least 500,000 light-years. The field of view is about the size of the full Moon on the sky and includes colorful foreground Milky Way stars (with diffraction spikes) along with more distant background galaxies. (text: apod.nasa.gov/apod/ap141226.html)

This picture was photographed October, 13-17, 2015 in Rozhen observatory, Bulgaria.

Equipment: home assembled reflector 10 in., f/3.8

Mount WhiteSwan-180 with a control system «Eqdrive Standart», camera QSI-583wsg, Televue Paracorr-2. Off-axis guidecamera QHY5L-II.

LRGB filter set Baader Planetarium.

L = 18 * 900 seconds + 18 * 300 seconds, bin.1, RGB = 11 * 300-450 seconds, bin.1 each filter. About 9 hours.

FWHM source in L filter 2.24 "-2.68", summ in L channel - 2.46"

The height above the horizon from 36° to 48°, the scale of 1"/ pixel.

Processed Pixinsight 1.8 and Photoshop CS6

If you've seen my feed, you know I've been working on deepspace landscapes like this basically all winter. This is my most recent effort. The foreground is an old fire tower and observation deck. In the sky, from left to right, is the M38 star cluster, the tad pole nebula (the blueish object), and then the flame nebula just above. I thought the idea of the flame nebula and a fire tower was poetic in a way.

My goal with this series has been to illustrate just how big these objects in the night sky are, by showing them near terrestrial objects. Ah if only our eyes could see this!

reworked

The Whirlpool Galaxy is an interacting spiral galaxy in the constellation Canes Venatici

at distance of 23 Mio. Lj

LRGB

Equipment:

TS 10" f/4 ONTC Newton

1000mm f4

GPU Aplanatic Koma Korrector

Moravian CCD G2-8300FW

Astrodon LRGB Filter

Losmandy G11/LFE Photo

Guding:

Lodestar on TS Optics - ultra short 9mm Off Axis Guider

PHD2

16x900s Luminanz

5x900s RGB

total exposure time: 7h 45′

Processing: PixInsight/Affinity Photo

Volcanic turmoil, radiating out from the propeller nebular . DWB-111 Propeller Nebula is an emission nebula in the constellation Cygnus

This is the next installment of my 2016 Cygnus exploration. This image is made up of two panels and has an integration of approximately 50 hours of photography.

Nella costellazione della Vergine si trova un grande ammasso di galassie, denominato appunto "Ammasso della vergine", composto da circa 1500 galassie. All'interno del quale alcune galassie più luminose formano prospetticamente quella che viene denominata "Catena di Markarian". I suoi membri principali sono M84 (NGC 4374), M86 (NGC 4406), NGC 4477, NGC 4473, NGC 4461, NGC 4458, NGC 4438 e NGC 4435, ma solo in questa immagine ce ne sono facilmente rintracciabili oltre 20 .

Avevo iniziato a fotografare la "Catena di Markarian" già nel maggio-giugno 2025, ma l'integrazione raggiunta era troppo poca quindi l'ho ripresa quest'anno racimolando circa 15h di integrazione totale.

15h sotto un cielo Bortle 5-6 non è il massimo, anche perchè durante alcune sessioni fotografiche il cielo non era molto trasparente. Ad ogni modo ho cercato di fare il massimo secondo le mie capacità.

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In the constellation of Virgo lies a large galaxy cluster, aptly named the "Virgo Cluster," composed of about 1,500 galaxies. Within this cluster, some of the brighter galaxies form what is called the Markarian Chain. Its main members are M84 (NGC 4374), M86 (NGC 4406), NGC 4477, NGC 4473, NGC 4461, NGC 4458, NGC 4438, and NGC 4435, but more than 20 are easily identifiable in this image alone.

I had started photographing the "Markarian Chain" as early as May-June 2025, but the integration achieved was too low, so I took it again this year, collecting about 15 hours of total integration.

15 hours under a Bortle 5-6 sky isn't ideal, especially since during some photo sessions the sky wasn't very transparent. In any case, I tried to do the best I could.

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Optic: APO Refractor Askar 103APO + 0.6X

Camera: ZWO ASI533MC-Pro

Mount: Sky Watcher HEQ5 Synscan

Seeing: 3 (scala Antoniadi)

Filter: Astronomik CLS

-180x300s 121gain/ 58darks /21+27 flats /80 biases

t° sensor: -10°C

Date: 2025-05-31, 2025-06-01+02, 2026-03-19+24+25, 2026-04-07

Integration: 15h 0m

Temperature: 14°C (media)

location for: Biancavilla -Catania-(Italy) 515m slm (Bortle 5-6) flic.kr/p/8AWHek

lightpollutionmap.app/it/?lat=37.641252&lng=14.871604...

Acquisition: NINA, PHDGuiding

Processing: SIRIL1.4.2, GraXpert, SyQon-Prism, SyQon-Starless, PS

The Whirlpool Galaxy is one of the most spectacular sights when observing the night sky. Located at about 31 million years from us, it is a grand design spiral galaxy interacting with another one, in a slow dance by which both will merge within several million years. As a result of this, tidal streams of stars are swirling around, here seen as the faint light patch around. The Whirlpool Galaxy has lots of star formation areas - the bluish areas reveal the presence of young and hot stars.

Shot at Santa Susana, Portugal on the 29th and 30th of April, 2022 and at Barcarena, Portugal on the 24th, 25th, 26th and 27th of January 2023.

Technical details:

LUM: 172 x 180’’ (8h36)

RGB: 120 x 180’’ (6h00)

Ha: 119 x 300’’ (9h55)

Total integration: 24h31

SW EQ6-R Pro | TS Optics Triplet APO 800/115 | TS Optics TSFLAT2 0.79x | QHYCCD 268M | Optolong LRGB |Astronomik Ha 6nm | RBFocus Gaius-S | RBFocus Myrrdin 2.3

Acquisition: N.I.N.A. |

Processing: Pixinsight

SHO processing

Equipment:

Epsilon 130ED dual rig

QHY268m + CFW3M

Touptek IMX571 + ZWO EFW

Astronomik MaxFR

Skywatcher EQ8

July 2022

Processing: PixInsight/affinity photo

276 x 180s Ha

80 x 180s OIII

80 x 180s SII

total: 21,8 hour

The Spaghetti Nebula is a supernova remnant (SNR) in the Milky Way, straddling the border between the constellations Auriga and Taurus. The nebulous area has an almost spherical shell and a filamentary structure. It is believed that the stellar explosion left behind a rapidly spinning neutron star known as a pulsar in the nebula core, emitting a strong radio signal. Sh2-240 is approximately 3,000 light-years from earth.

Image captured over 3 nights; 2023-02-12, 14, & 16

7 hours 20 minutes total integration

Ha subs 14 * 1,200 sec = 4 hours 40 min

OIII subs 8 * 1,200 sec = 2 hours 40 min

Imaging Equipment:

Canon EF 70-200mm at 135mm

Rainbow Astro RST-135,

ZWOASI294MM Pro camera

SH 3.0nm filters

The colorful Rho Ophichui cloud complex is one the closest star forming regions in our Milky Way and a favorite target for astrophotography. Highlighted by the bright star Antares, the region provides an impressive spectacle of colorful glowing gases, juxtaposed with converging dark rivers of thick dust.

IC 4604 (Rho Ophiuchi Nebula) is a large diffuse nebula of 5th magnitude located in the southwestern corner of the constellation Ophiuchus (Serpent Bearer), surrounding the bright multiple star system ρ (Rho) Ophiuchi. Several regions of bright and dark nebulosity surround the area, which takes its name from ρ Oph.

At the mid-northern lattitudes, I normally work from, it plays a bit hard to get, as it always rides close to the horizon and is only visible for a few hours during nights from spring to mid summer.

During my Namibia trip in 2023, I had the pleasure to shoot this wonderful area riding high in the unspoiled southern hemisphere sky.

EXIF

Canon EOS-Ra

Canon 70-200mm f/2.8 L IS USM ll @ 135mm

Equatoriallly mounted Skywatcher AZ-GTI

IDAS 12 filter

30x 90s @ ISO1600, unfiltered & 10x 180s @ ISO6400, filtered

The Iris Nebula is a bright reflection nebula in the constellation Cepheus. It resides about 1,300 light-years away from earth and is six light-years across. Technical Info:

34 x 300 sec. Badder UV/IR Cut filter

22 x 300 sec. Astronomik Ha 12 nm filter

46 x 300 sec. Optolong L-eHance

Gain 200, Offset 50, Binning 1x1

Total Integration 8.5 hours

Explore Scientific 102mm f/7 APO Refractor

Sensor cooled to -20°C on ZWO ASI294MC Pro (OSC)

Calibration frames: Bias, Darks, and Flats.

Plate Solve-ASTAP via N.I.N.A. 1.11

Image processing Pixinsight 1.8.8 and finished in Photoshop CC 2021

More than 38 hours of total exposures went into this 4 panels mosaic covering about 140 square degrees of sky.

Pentax 67 EDIF 300mm f/4 - FLI Proline 16803 - Ha (920m) OIII (890) R (160m) G (160m) B (160m) - Coonabarabran, NSW, Australia

If you would like to see larger sizes of this image or get high quality professional prints please visit my homepage at www.glitteringlights.com

We haven't had a lot of clear skies during the "COVID days", however when we have had some I've tried to take advantage of it. In the mean time though, I've been working on some older images like this one. I captured the pictures that make up this image last year in Arizona, and then recently re-processed them and am SUPER happy with the result. The night sky is just so intriguing!

IC 2944, aka the Running Chicken Nebula, is an emission nebula associated with an open star cluster in the constellation Centaurus. Just right of centre are Thackeray's Globules - a group of Bok Globules comprised of dense cosmic dust and gas. Bok Globules are often a site of star formation but not in this case.

Captured at Yass, Australia 5-24 April, 2018.

Scope: Planewave CDK17 @ f/6.8 = 2939mm FL

Mount: Paramount ME

Camera: SBIG STXL-11002/AOX

Filters: Astrodon LRGB gen II, 3nm NB

Image scale: 0.63 arcsec/pixel

Exposures: 14x1800s Ha, 14x1800s Oiii, 14x1800s Sii (21 hours)

Processing: PixInsight 1.8.5

CTB1 is a supernova remnant in the constellation Cassiopeia, located about 9,800 light-years away and spanning roughly 100 light-years.

It consists of the remnants of a stellar explosion that occurred over 10,000 years ago.

A time-consuming project spanning 50 hours.

August and September 2025

french Alps

180x300s h-alpha

288x300s OIII

24x300s red

19x300s green

13x300s blue

78x300s Luminanz

50 hours total

Equipment:

Takahashi Epsilon 130D dual rig

Epsi1:QHY268m (IMX571)

Epsi1: QHYCFW3M-SR

Epsi1: QHY OAG + ASI220m

Epsi2: TS2600MP (Touptek/RisingCam IMX571)

Epsi2: ZWO EFW

Filter: Astronomik LRGB DeppSky

Filter: Astronomik MaxFR

JTD Dual Rig Alignment Saddle

Sywatcher EQ8

N.I.N.A

Pegasus NYX-101

Distance: ca.23 Mio. Lj

Equipment:

TS 10" f/4 ONTC Newton

1000mm f4

ZWO ASI 1600mmc

Astrodon LRGB

Skywatcher EQ8

Guding:

Lodestar on TS Optics - ultra short 9mm Off Axis Guider

PHD2

total exposure time: 6:15 hours

80x180 luminanz

15x180 red

15x180 green

15x180 blue

April 2018

Processing: PixInsight

I have just returned from a trip to southern California. This area is a desert, and has so many amazing desert bird species, which I spent a lot of time photographing. Another goal I had for this trip was to visit the light-pollution free skies of Joshua Tree National Park to photograph the Milky Way. The Milky Way is tough in March as it only rises in the last few hours of the night. We had to up at 3:30 AM to photograph it! We would have about two hours to photograph it before it would begin to fade as the sun begins to rise, and those two hours were some of the most amazing of my life. Seeing so many stars and the Milky Way with the naked eye was amazing! I have never seen anything like it before. It was an incredible experience, something I will never forget!

I took tons of pictures, and this was one of my favorites. The orange light on the horizon is light pollution likely coming from a nearby city like Indio.

Canon EOS 7D Mark II | Tokina 16.5-135mm f/3.5-5.6 AT-X DX @ 17mm | 13 seconds | ISO 12800 | f/3.5

Distance: ca.41 Mio. Lj

Constellation Canes Venatici

Equipment:

TS 10" f/4 ONTC Newton

1000mm f4

ZWO ASI 1600mmc

Astrodon LRGB

Skywatcher EQ8

Guding:

Lodestar on TS Optics - ultra short 9mm Off Axis Guider

PHD2

total exposure time: 3,7 hours

29x180 luminanz

15x180 red

15x180 green

15x180 blue

26/27.04.2020

Processing: PixInsight/Capture One

This image shows the tail of the constellation Cygnus (Swan) around the stars Deneb and Sadr.

The left side of the frame is dominated by the famous North America Nebula (NGC7000) and the Pelican Nebula (IC5070). The bright blue star is Deneb. It is the brightest known star in visible light. If it was as close to earth as Vega (25 light years), it would shine as bright as a crescent moon!

The right yellowish-white star on the right side is a supergiant named Sadr. Sadr is surrounded by the emission nebula IC1318 one of the several nebulous regions at the centre of Cygnus. IC 1318 is known as the Gamma Cygni Nebula, Sadr Region or the Butterfly Nebula. It is not physically related to Sadr, but merely lies in the same line of sight. The nebula is located much farther away than the star.

At the very edge of the frame on the right is the Crescent Nebula. The star responsible for the nebula’s shape and glow is the Wolf-Rayet star WR 136. The nebula is formed by the star’s fast, powerful stellar wind that collides with the slower wind ejected by the star about 250,000 years ago, when WR 136 expanded to become a red giant. The collision has produced a dense shell, which continues to expand at a speed of 80 km/s.

Prints available: ralf-rohner.pixels.com

EXIF

ZWO ASI 1600MM Pro, cooled astrocam

Canon EF 70-200mm f/2.8 L ll @ 70mm

Baader Hll & Olll ultra narrowband and RGB filters

Skywatcher AZ-GTI, equatorially mounted

ZWO ASI 385MC guide cam

Rig control with a ZWO ASIair

20 x 180s Hll

30 x 120s Olll

20 x 30s RGB

Equipment:

Epsilon 130ED dual rig

QHY268m + CFW3M

Touptek IMX571 + ZWO EFW

Astronomik MaxFR

Skywatcher EQ8

September 2022

Processing: PixInsight/affinity photo

30x180s red

30x180s green

30x180s blue

240x180s h-Alpha

56x180s OIII

58x180s SII

total: 22,2 hours

www.thesun.co.uk/sol/homepage/news/2725529/Northern-Light...

☄️ Comète Leonard en approche 😱.

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J'étais obligé de la faire celle là ! J'ai tellement apprécié Neowise l'année dernière qu'il fallait que j'aille photographier la comète Leonard.

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Elle aura attendu le dernier mois de l'année pour pointer le bout de son nez . Mais quel spectacle encore !!

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Il est désormais possible de la voir à l'œil nu dans des bonnes conditions. Encore faut-il que la météo vous le permette. Et elle m'en a donné du fil à retordre la météo... Plus d'une semaine a check les nuages chaque nuit/aube parfois en mettant un réveil en pleine nuit (😂😭). Le ciel étant tellement couvert, il m'a fallu 2 sessions différentes pour accumuler assez de temps de pose. Un peu plus d'une heure d'expo au total pour ne garder que 35mn au final. Le pic de visibilité sera sans doute le 12 décembre mais aucune certitude si la météo me permettra de retourner shooter la comète une dernière fois.

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Comme l'année précédente, j'ai voulu trouver un spot fort de la région pour immortaliser ce moment. En cherchant une orientation Nord-Est, j'ai alors choisi le mémorial de Vimy qui s'est proposé à moi comme une évidence. C'est un lieu que j'aime particulièrement et que je n'avais pas encore photographié 🇨🇦.

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03/12/21 + 07/12/21 45x45sec iso 800 f/3.2 @ 135mm

www.starkeeper.it/NGC7822B.htm

Hot, young stars and cosmic pillars of gas and dust seem to crowd into NGC 7822. At the edge of a giant molecular cloud toward the northern constellation Cepheus, the glowing star forming region lies about 3,000 light-years away. Within the nebula, bright edges and dark shapes stand out in this colorful skyscape. The image includes data from narrowband filters, mapping emission from atomic oxygen, hydrogen, and red,blue and green filters. The atomic emission is powered by energetic radiation from the central hot stars. Their powerful winds and radiation sculpt and erode the denser pillar shapes and clear out a characteristic cavity light-years across the center of the natal cloud. Stars could still be forming inside the pillars by gravitational collapse but as the pillars are eroded away, any forming stars will ultimately be cutoff from their reservoir of star stuff. This field of view spans over 40 light-years at the estimated distance of NGC 7822 [Text adapted from APOD]

Optics: Takahashi FSQ-106EDXIII F/5 530mm. - APO Refractor

Mount: AP Mach1 GTO

Camera: Moravian G4-16000 Mark II

Filters: Astrodon E Series Gen II LRGBH 50mm squared

Guiding Systems: SX Lodestar

Dates/Times: 2020-2021

Location: Pragelato - Turin / Italy

Exposure Details: H:R:G:B => 360:60:50:50 = > (24x15):(12x5):(10x5):(10x5) [num x minutes]

Cooling Details: -25 °C

Acquisition: Voyager Astrophotography Automation

Processing: CCDStack2+, PS CC, StarXTerminator

Mean FWHM: 1.21 / 2.05

SQM-L: 20.21

Sh2-155 was first noted as a galactic emission nebula in 1959 in the extended second edition of the Sharpless catalogue.

The name "Cave Nebula" was coined for this object by Patrick Moore, presumably derived from photographic images showing a curved arc of emission nebulosity corresponding to a cave mouth.

Sh2-155 is a diffuse nebula in the constellation Cepheus, approximately 2,400 light-years away from Earth.

Image captured over 4 nights; 2021-10-01 to 2021-10-07.

17 hours and 20 min total integration

Ha subs 24 * 1,200sec = 8 hours

OIII subs 13 * 1,200sec = 4 hours 20 minutes

SII subs 15 * 1,200sec = 5 hours

Imaging Equipment:

SharpStar 140PH Triplet 910mm focal length

Mesu 200 MKII,

ZWOASI2600MM Pro camera

3nm Ha, OIII & SII filters

Presenting an M31 Andromeda Galaxy “beginner equipment” side-project. I wanted to capture a deep space object with what is representative of relatively “beginner” equipment and modest exposure times as a sort of “you don’t need to spend heaps of money to make a good image” demonstration. And Andromeda seems like the perfect target for this sort of thing. Something I can share when people argue a basic camera can’t make a nice image, or get caught up feeling as though spending thousands of dollars is the right solution to solve frustrations they are encountering learning this challenging hobby.

As Ed Ting quipped (paraphrased), “You end up spending a lot of money to find out you didn’t need to spend a lot of money.”

Or maybe it’s mainly a “for better or for worse” reminder that experience, process, and (especially) post-processing knowledge and software are valuable parts of the formula. Expensive equipment does not offer an escape from this. Not to say the right sort of equipment (e.g. an interchangeable lens camera with a decent sensor and a tracking mount) doesn’t play a vital role in what is possible.

Hopefully this is helpful.

And in the spirit of this goal, I also spent some time documenting, in detail, the post-processing steps and thought process behind the edits involved. For this I used PixInsight and Adobe Photoshop.

Full Post-Processing Notes

tinyurl.com/JPAndromeda

www.astrobin.com/uld8ae/

Olympus E-M1 Mk.II M43 Camera

Olympus 40-150 f/2.8 Pro (150mm)

iOptron SkyGuider Pro

Vello Intervalometer

ASIAir Pro, ZWO 30mm Guide Scope, 2x ASI120MM (one as a dummy camera)

Lights RGB 100x90s ƒ/2.8 ISO1000

Calibrated with Darks, Flats, Flat Darks

Antelope Island, Utah, USA (Bortle 4)

Lights Hα 24x300s ISO3200

RedCat 51 & Astronomik 12nm Hα

I wanted to show that a color, stock sensor doesn’t mean Hydrogen-alpha can’t be accented. But had to use the RedCat 51 for this as, unlike a basic Canon DSLR, I don’t have a good means of using a Hydrogen-alpha filter with this Olympus.

✌️ "V" zodiacal et arche hivernale ✨.

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Au-revoir à Orion et son ciel d'hiver qui nous quittent en ce mois d'Avril. On se retrouve en Octobre pour de nouvelles astrophotos . Je n'ai malheureusement pas pu trop en profiter d'une part à cause de la météo et d'autre part à cause d'un autre projet photo qui me prend beaucoup de temps 👀.

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🆑 Ici, c'est un peu mon Chili à moi 😂. Probablement un des meilleurs ciels de notre région (disons plutôt le moins pire). Il me faut environ 1h15 de route de la maison pour profiter de ce ciel assez correct. Situé au fin fond du Pas-de-Calais, cet endroit est classé dans une zone Bortle 4 (proche Bortle 3). La meilleure valeur de la qualité de ciel que j'ai pu mesurer ici au SQM (Sky Quality Meter) est de 21.47. Le maximum étant 22.00, il correspond aux endroits sur Terre où le ciel est le plus pur, sans aucune pollution lumineuse. Cette différence entre les 2 valeurs paraît minime mais elle est en fait énorme et la différence sur la pureté du ciel l'est tout autant.

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🔭 Alors certes je n'ai pas la puissance des télescopes du désert chilien mais j'essaye de me débrouiller avec mon Newton 250/1000 . C'est un petit parallèle avec les moyens du bord comparé aux énormes observatoires qui sont là-bas. On voit beaucoup d'arches galactiques au-dessus des immenses coupoles, je voulais mettre à mon tour en valeur la bête . J'avais cette compo en tête du backstage : un "V" formé sous l'arche de la Voie Lactée. La cible ce soir-là était la galaxie M51, le post arrive bientôt. On peut observer de gauche à droite : le complexe d'Orion, la Voie Lactée, la lumière zodiacale, la galaxie d'Andromède et bien d'autres nébuleuses en H-alpha.

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EXIF :

-@canonfrance EOS R astro mod by a-m.de

-@sigmafrance ART 24mm f/1.4 DG HSM

-@skywatcherusa Star Adventurer GTi

-Ciel : pano de 12 tuiles 1*30s f/2.2 ISO 1250 suivi

-Sol : pano de 6 tuiles 1*75s f/3.2 ISO 3200 non suivi

Explanation: Follow the handle of the Big Dipper away from the dipper's bowl, until you get to the handle's last bright star. Then, just slide your telescope a little south and west and you might find this stunning pair of interacting galaxies, the 51st entry in Charles Messier's famous catalog. Perhaps the original spiral nebula, the large galaxy with well defined spiral structure is also cataloged as NGC 5194. Its spiral arms and dust lanes clearly sweep in front of its companion galaxy (left), NGC 5195. The pair are about 31 million light-years distant and officially lie within the angular boundaries of the small constellation Canes Venatici. Though M51 looks faint and fuzzy to the human eye, the above long-exposure, deep-field image taken last month shows much of the faint complexity that actually surrounds the smaller galaxy. (Text from apod.nasa.gov/apod/ap090526.html)

This photo was taken for four nights in May and June 2013 in Crimea and Khlepcha observatory near Kiev, Ukraine.

Equipment: reflector S&D 10" f/4.7, Mount WhiteSwan-180, camera QSI-583wsg, Tevevue Paracorr-2. Off-axis guidecamera Orion SSAG.

LRGB filter set Baader Planetarium.

L=20*900 sec. bin.1 RGB: 10*900 sec. each channel, bin.1 Total exposure 12.5 hours.

North left.

Processed Pixinsight 1.8 and Photoshop CS6.

First light with the new scope! IC 1848 - The Soul Nebula in LRGB. The next door neighbor to the well-imaged Heart Nebula, which I imaged in narrowband back in 2020. I've never shot this target before and while initially it was "just a first light target", I was pleasantly surprised with the small structures and Bok globules within the nebula itself as well as the broadband dust that surrounds it.

- Location: Remote Observatory (Bortle 1, SQM 21.99) near Fort Davis, TX

- Total Exposure Time: 30.35 Hours

Equipment:

- Scope: Takahashi FSQ106EDX4

- Imaging Camera: QHY 268M

- Filters: Chroma LRGB (36mm)

- Mount: Astro Physics Mach1GTO

- Guidescope: SVBony 50mm Guidescope

- Guide camera: ASI 120mm mini

- Focuser: Moonlite Nitecrawler WR35

- Accessories: Pegasus Ultimate Powerbox v2, QHY Polemaster, Optec Alnitak Flip Flat

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Software:

- N.I.N.A for image acquisition, platesolving, and framing

- PHD2 for guiding

- PixInsight for processing

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Acquisition:

- L: 319 x 3m

- R: 99 x 3m

- G: 97 x 3m

- B: 92 x 3m

- All images at Gain 56, Offset 25 (Readout mode 1) and -5C sensor temperature

- 20 flats per filter

- Master Dark, Flat & Bias from Library

- Nights: 12/16, 12/18-12/20, 12/23-12/25, 12/27/22, 1/13/23

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Processing:

- WBPP for Calibration

- Blink to remove bad subs

- ImageIntegration for stacking

RGB Processing (apply to each master):

- DynamicCrop

- MureDenoise

- DynamicBackgroundExtraction

- StarAlignment to align G and B to R

- ChannelCombination to combine to color image

- Duplicate image and ImageSolver to platesolve

- SpectroPhotometricColorCalibration on platesolved duplicate

- StarAlign both original and SPCC'd image to Luminance

- StarXterminator on original image to extract stars and save for later

- StarXterminator to create starless SPCC'd image

- HistogramTransformation x3 on SPCC'd image to stretch to non-linear

- NoiseXterminator on RGB image for noise reduction

Luminance processing:

- DynamicCrop

- MureDenoise

- DynamicBackgroundExtraction

- StarXterminator to create starless and extract stars

- GeneralizedHyperbolicStretch for initial stretch

- HistogramTransformation x2 for further stretch

- NoiseXterminator for slight noise reduction

- UnsharpMask using RangeMask for sharpening of structures in nebula

Combine Luminance and RGB:

- LRGBCombination with saturation at 0.35

- HistogramTransformation for slight stretch

- CurvesTransformation for slight saturation boost

- MultiscaleMedianTransform for chrominance noise reduction

Add RGB Stars to Nebula and further processing:

- HistogramTransformation x3 to stretch RGB stars and then Luminance stars to approximately the same amount

- LRGBCombination to combine RGB and Luminance stars

- ColorSaturation for saturating blue stars

- PixelMath and HistogramTransformation to add RGB stars to Nebula image

- CurvesTransformation for color balancing

- Slight SCNR green

- NoiseXterminator for noise reduction

- DynamicCrop to remove edges

- Save and Export

After many months of clouds, wind and/or extreme temperatures, we finally completed this winter target. Imaged from late February to late March as conditions allowed.

The HII region, Sh 2-261, is often called Lower's nebula because it appears on a photographic plate taken by the father-and-son team of Harold and Charles Lower in 1939.

Image captured over 5 nights; 2022-02-25, 2022-03-06, 21, 24 & 29

15 hours 40 minutes total integration

Ha subs 23 * 1,200 sec = 7 hours 40 min

OIII subs 9 * 1,200 sec = 3 hours

SII subs 15 * 1,200 sec = 5 hours

Imaging Equipment:

SharpStar 140PH Triplet 910mm focal length

Mesu 200 MKII mount,

ZWOASI2600MM Pro camera

SHO 3.0nm filters

Prospetticamente attorno ad una delle più luminose stelle del cielo, la stella multipla e variabile Gamma Cassiopeiae (γ Cas), chiamata Tsih o Navi, si trova la regione di H II (idrogeno ionizzato) conosciuta con la sigla Sh2-185, e al cui interno spiccano due nebulose catalogate con le sigle IC59 e IC63.

Pensavo che riuscire a fotografare questa regione fosse una cosa più semplice invece devo ammettere che la nebulosità più debole di Sh2-185 è veramente molto evanescente e la presenza di gradienti causati da Inquinamento luminoso ha complicato le cose; quindi sono stato costretto mio malgrado ad utilizzare con decisione i tool di denoise per ridurre il rumore.

Ma ciò che ha reso più difficile elaborare questa immagine è stata la presenza della luminosa Gamma Cassiopeiae il cui riverbero abbagliava una parte dell'immagine e attorno alla quale c'era un antiestetico alone penso causato da riflessioni all'interno del riduttore 0.6X.

Ciò malgrado penso di aver raggiunto un discreto risultato.

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Perspectively surrounding one of the brightest stars in the sky, the multiple variable star Gamma Cassiopeiae (γ Cas), called Tsih or Navi, lies the H II (ionized hydrogen) region known by the acronym Sh2-185, within which stand out two nebulae cataloged as IC59 and IC63.

I thought photographing this region would be easier, but I have to admit that the faintest nebulosity of Sh2-185 is truly very evanescent, and the presence of gradients caused by light pollution complicated matters; so, against my will, I was forced to vigorously use denoising tools to reduce the noise.

But what made processing this image more difficult was the presence of the bright Gamma Cassiopeiae, whose glare dazzled part of the image and which had an unsightly halo around it, I think caused by reflections within the 0.6X reducer.

Even so, I think I achieved a decent result.

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Optic: APO Refractor Askar 103APO + 0.6X

Camera: ZWO ASI533MC-Pro

Mount: Sky Watcher HEQ5 Synscan

Seeing: 4 (scala Antoniadi)

Filter: Narrowband Optolong L-eNhance 2" + SVbony UV-IR cut

-199x180s 250gain/ 23dark /27flat /80 bias

-64x300s 250gain/ 35dark /27flat /80 bias

t° sensor: -5°C

Date: 2025-10-25, 27 + 2025-11-12,13

Integration: 15h 17m

Temperature: 16°C (media)

location for : Biancavilla -Catania-(Italy) 515m slm (Bortle 5-6) flic.kr/p/8AWHek

Acquisition: NINA, PHDGuiding

Processing: DSS, SIRIL 1.4, PS, GraXpert

Orion nebula, horsehead nebula, witch head nebula, and more rising over a volcanic plug in the Navajo volcanic field in northwestern New Mexico, as seen with an 85mm lens on a full frame camera.

Can you believe this image took only 1 hour of exposures to stack to this level of cleanliness? New Mexico has some of the darkest skies in the United States, and the high altitude allows for even better imaging conditions than you get in many other dark sky national parks.

And being winter with sunset so early in the day, it means you can image something like this, eat dinner, and go to sleep at a reasonable hour! This image was stacked for denoising, but the perspective is unaltered, i.e. if we had extremely sensitive eyes, this is exactly how you would see it.

Located in the constellation Orion and is associated with the open star cluster NGC 2175. NGC 2174 is about 6,400 light-years away from Earth.

Image captured over 8 nights; 2021-03-07 to 2021-03-16.

13 hours total integration

Ha subs 15 * 1,200sec = 5 hours

OIII subs 13 * 1,200sec = 4 hours 20 minutes

SII subs 11 * 1,200sec = 3 hours 40 minutes

Imaging Equipment:

SharpStar 140PH Triplet 910mm focal length

Mesu 200 MKII,

ZWOASI2600MM Pro camera

3nm Ha, OIII & SII filters

spacepaparazzi.com/

A cool region of sky containing (surprise) a lot of dust and reflection. LDN 1355, the helping hand nebula, is rather aptly named. It appears to sit in front of a reflection region, Van den Bergh 9. VdB 7 is visible on the right hand side of the frame.

- Location: Remote Observatory (Bortle 1, SQM 21.99) near Fort Davis, TX

- Total Exposure Time: 33.3 Hours

Equipment:

- Scope: Esprit 100ED w/ 1x Flattener

- Imaging Camera: QHY 268M

- Filters: Chroma LRGB (36mm)

- Mount: Astro Physics Mach1GTO

- Guidescope: SVBony 50mm Guidescope

- Guide camera: ASI 120mm mini

- Focuser: Moonlite Nitecrawler WR35

- Accessories: Pegasus Ultimate Powerbox v2, QHY Polemaster, Optec Alnitak Flip Flat

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Software:

- N.I.N.A for image acquisition, platesolving, and framing

- PHD2 for guiding

- PixInsight for processing

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Acquisition:

- L: 332 x 3m

- R: 113 x 3m

- G: 112 x 3m

- B: 110 x 3m

- All images at Gain 56, Offset 25 (Readout mode 1) and -5C sensor temperature

- 20 flats per filter

- Master Dark, Flat & Bias from Library

- Nights: 8/2, 8/3, 8/6, 8/7, 8/22, 8/26, 8/27, 8/29, 9/5, 9/6, 9/20, 9/21, 10/3, 10/4/22

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Processing:

- WeightedBatchPreProcessing for calibration

- Blink to remove unwanted subs

- ImageIntegration for stacking of masters

RGB Processing (apply to each master):

- DynamicCrop

- MureDenoise

- DynamicBackgroundExtraction

- StarAlign G and B to Red

- ChannelCombination to combine into linear RGB

- StarAlign to Lum

- HistogramTransformation x 4 to stretch

- NoiseXterminator for NR

- CurvesTransformation for saturation and hue adjustment

- ColorMask to create green chrominance mask - apply to image

- CurvesTransformation to bring down green patches

- Further unmasked CurvesTransformation to neutralize blue hue of image

Luminance Processing:

- DynamicCrop

- MureDenoise

- DynamicBackgroundExtraction

- StarXterminator to make starless and generate star_mask

- GeneralizedHyperbolicStretch for initial stretch to non-linear

- HistogramTransformation x3 for further strethc

- Slight NoiseXterminator for NR with Lum_mask

- CurvesTransformation for contrast

- Additional masked NoiseXterminator for NR

Combine Lum and RGB and further processing:

- LRGBCombination to combine Luminance and RGB

- CurvesTransformation for color balancing

- ACDNR with Luminance mask for chrominance noise reduction

- Slight CurvesTransformation for contrast

- UnsharpMask for slight sharpening

- LocalHistogramEqualization for slight detail boost

Add Stars back in to image:

- HistogramTransformation x3 on RGB stars - save all 3 instances of HT

- Invert -> SCNR -> invert back to remove magenta

- CurvesTransformation to remove green hue and saturate stars

- Apply saved HistogramTransformation instances to extracted Luminance stars

- LRGBCombination to combine luminance stars with RGB stars with saturation at 0.35

- CurvesTranformation on combined stars to increase blue channel

- HistogramTransformation on stars and nebula images to bring to pseudo-linear state

- PixelMath to combine stars and nebula images

- HistogramTransformation to "re-stretch" image with both nebula and stars

Further Processing:

- CurvesTransformation for slight contrast adjustment

- MMT to disable layer 12 for chrominance noise blotching

- Additional CurvesTransformations to color balance

- NoiseXterminator (2 rounds) with luminance mask for additional noise reduction

- Invert -> SCNR Green -> Invert to remove magenta cast

- MMT for debotch and chrominance NR using inverted luminance masks

- Final CurvesTransformation for contrast

- DynamicCrop to remove edges

- Save and export

reworked

Pixinsight with SPCC and BTX

The Whirlpool Galaxy is an interacting spiral galaxy in the constellation Canes Venatici

at distance of 23 Mio. Lj

LRGB

Equipment:

TS 10" f/4 ONTC Newton

1000mm f4

GPU Aplanatic Koma Korrector

Moravian CCD G2-8300FW

Astrodon LRGB Filter

Losmandy G11/LFE Photo

Guding:

Lodestar on TS Optics - ultra short 9mm Off Axis Guider

PHD2

16x900s Luminanz

5x900s RGB

total exposure time: 7h 45′

Processing: PixInsight/Affinity Photo