English below

La Nebulosa Pacman (NGC 281) si trova nella costellazione di Cassiopea, a circa 10.000 anni luce da noi.

Questa nebulosa ad emissione è una regione di formazione stellare, dove nubi di gas e polveri vengono illuminate dalla radiazione delle giovani stelle al loro interno.

Sono state realizzate 37 esposizioni da 10 minuti per ciascun filtro, utilizzando sia il dualband Antlia ALP-T 5 nm sia il nuovo Optolong L-Synergy che mi hanno permesso di elaborare in Hubble Palette SHO.

Per catturare le stelle è stata aggiunta circa un’ora di integrazione in pose da 60 secondi con filtro broadband SV260.

Il tutto è stato ripreso con un telescopio Newton 150/600 dotato di correttore Tecnosky 0.95x, camera Tecnosky Vision 571C e montatura EQ6-R Pro, elaborazione in PixInsight.

The Pacman Nebula (NGC 281) is located in the constellation Cassiopeia, about 10,000 light-years away.

This emission nebula is a star-forming region, where clouds of gas and dust are illuminated by the radiation of young stars within them.

I took 37 10-minute exposures for each filter, using both the Antlia ALP-T 5 nm dual-band filter and the new Optolong L-Synergy, which allowed me to process the image in Hubble Palette SHO.

To capture the stars, about an hour of integration was added in 60-second exposures with the SV260 broadband filter.

The entire image was captured with a 150/600 Newtonian telescope equipped with a Tecnosky 0.95x corrector, a Tecnosky Vision 571C camera, and an EQ6-R Pro mount, and processed in PixInsight.

www.astrobin.com/995c30/F/

Another object from this nice catalogue of faint nebula.

Long integration of 53 hours using two narrow band filters mainly, searching the limits of the equipment and my own process skills.

It's not a popular target probably because is difficult and usually is not showing so much detail due to the high dynamic range, the core is bright, really bright compare with the faint surroundings.

Sh2-235 is the most central and brightest nebula of an H II region known as G174+2.5; it is observed in the direction of the northern part of the Aur OB1 association and includes the nebulae catalogued as Sh2-231, Sh2-232, Sh2-233 and Sh2-235, identified as individual nebulae in the 1959 census of H II regions. Although in the optical images they appear as distinct nebulae, in reality they all belong to a single giant molecular cloud, of which some parts appear illuminated by young and hot stars. This cloud is located in Perseus' Arm at a galactic latitude that places it slightly off-center with respect to the center of the galactic disk; the distance measurements indicate a range between 1600 and 2000 parsec, so it is normally indicated as about 1800 parsec (5870 light years).

(descri. credits to wiki.it it.wikipedia.org/wiki/Sh2-235)

Technical card

Imaging telescope or lens:Altair Astro RC250-TT 10" RC Truss Tube

Imaging camera:ZWO ASI1600MM-Cool

Mounts:Mesu 200 Mk2, Astro-Physics Mach-1 GTO CP4

Guiding telescope or lens:Celestron OAG Deluxe

Guiding camera:ZWO ASI174 Mini

Focal reducer:Riccardi Reducer/Flattener 0.75x

Software:Pleiades Astrophoto PixInsight , Seqence Generator Pro

Filters:Astrodon O-III 36mm - 5nm, Astrodon S-II 36mm - 5nm, Astrodon R Gen.2 E-series 36mm, Astrodon G Gen.2 E-series 36mm, Astrodon B Gen.2 E-series 36mm, Astrodon HA 36mm - 5nm, Astrodon L Gen.2 E-series 36mm

Accessories:ZWO EFW, MoonLite NiteCrawler WR30

Resolution: 2328x1760

Dates:Dec. 25, 2019, Jan. 3, 2020, Jan. 12, 2020, Jan. 15, 2020

Frames:

Astrodon B Gen.2 E-series 36mm: 90x30" (gain: 75.00) -20C bin 1x1

Astrodon G Gen.2 E-series 36mm: 90x30" (gain: 75.00) -20C bin 1x1

Astrodon HA 36mm - 5nm: 186x600" (gain: 200.00) -20C bin 1x1

Astrodon R Gen.2 E-series 36mm: 90x30" (gain: 75.00) -20C bin 1x1

Optolong SII 6.5nm 36mm: 121x600" (gain: 113.00) -20C bin 1x1

Integration: 53.4 hours

Avg. Moon age: 18.25 days

Avg. Moon phase: 55.61%

Astrometry.net job: 3224550

RA center: 5h 41' 5"

DEC center: +35° 49' 58"

Pixel scale: 1.007 arcsec/pixel

Orientation: 90.283 degrees

Field radius: 0.408

Locations: AAS Montsec, Àger, Lleida, Spain

Data source: Own remote observatory

Remote source: Non-commercial independent facility

Data acquired remotely from IC Astronomy Observatory, Oria, Spain.

Takahashi FSQ-106 telescope

Paramount MX mount

ZWO ASA 2600mm CMOS camera

Optolong SHO filters

Ha: 108 x 600s

OIII: 57 x 600s

SII: 90 x 600s.

Data acquisition: 07-12-2024 to 23-12-2024.

North is to the right.

Processed with Astro Pixel Processor, PixInsight, Blur Xterminator, Star Xterminator, Noise Xterminator, Affinity Photo.

Astronomy tutorials and music videos on my You Tube Channel:

www.youtube.com/channel/UCdNHCly_2ueWSe-Hh4OiuDA

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THANKS TO EVERYONE FOR 1.7+ MILLION + VIEWS!!!👍👍

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Monoceros constellation is famous for its hydrogen rich emission nebulae, such as the Rosette and Cone Nebula, but it also features some beautiful dark and emission nebulae. The field of view in this photo shows an area where all these types of nebulae can be seen, from the hydrogen emission (here in red), emission nebulae like IC 2168, NGC 2245 and NGC 2246 (the blue areas) and also some scattered dark nebulae.

Despite being in my list for some time, this photo was a last minute decision, while I was waiting for comet C_2022 E3 (ZTF). The same happened to Ha frames, taken with almost Full Moon - I wasn’t expecting much of it but it ended up being enough to enrich the photo.

Photo shot at Santa Susana on 2023.01.28 (RGB) and Barcarena in 2023.02.06 and 2023.02.07 (Ha)

Technical details:

RGB: 132 x 180s (6h36)

Ha: 93 x 300s (7h45)

Total: 15h21

SW EQ6-R Pro | TS Optics Triplet APO 800/115 | TS Optics TSFLAT2 0.79x | QHYCCD 268M | QHYCCD 268C | Optolong LRGB | TS Optics IR/UV Cut 2’’ | RBFocus Gaius-S | RBFocus Myrrdin 2.3

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

Image taken with ASI2600MC camera and an old 90mm film camera lens and Optolong L-Pro filter.

The final image consists of 12 x 5 minutes that were stacked on the fly using SharpCap Pro software.

The old camera lens was never designed for today's digital cameras and caused me many headaches to try and correct the star red color bloat and distortions.

Testing out the .75x reducer for my new Askar 65PHQ scope.

I was Pleased with the framing. 313mm down from 416mm native.

Just a tiny bit cropped on the edges to get rid of the very minimal stacking artifacts.

First image I have ever processed using Pixinsight (and Lightroom).

It's a bit of an imposing application. Thank God for Youtube tutorials!!

Gear used:

ASI294MC Pro

Askar 65PHQ w/ .75x Reducer

iOptron CEM26

ZWO 120mm mono guide scope

ZWO ASIAIR Plus

Optolong L-Extreme (also new - upgraded from the ZWO Dual Narrowband filter)

36 / 5 minute subs (3 hours total)

15 Dark frames

120 gain / -10c

Bortle 5 / 6 but I'm sure higher with a 70% moon, snow on the ground and a street lamp across the driveway.

Ambient temp 10deg F

Favàritx lighthouse is really a stunning location for landscape photography, all day long. And of course for nightscape too!

This is a pano shooting taken at 16mm f/1.8.

One of the main struggles was to "catch the beam" of the lighthouse: manually covering the lens of the camera when the beam of light is arriving. I had to do this 3 or 4 times per shoot, when the lighthouse was in the frame.

La nébuleuse de l'âme

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Gear - Matériel 🔭

Mount : Skywatcher EQ6-R

Scope : TS 94EDPH

Guiding : ZWO ASI290MM Mini on ZWO OAG

Imaging camera : ZWO ASI071MC Pro

Filters : Optolong L-extreme

Picture - Prise de vue 📷

Total integration : 15h00

Light : 180 x 300s

Dark : 30

Flat : 20

Gain : 90

Sensor temp : -5°C

Software - Logiciels

Imaging session : Nina

Guiding : PHD2

Stacking : PixInsight

Processing : PixInsigh

Imaged on 04-sep-2015, 05+06 dec 2016.

During processing i noticed that there was a lot of blue where i expected more "Ha-Red". After looking at bi colour images (Ha+OIII) i realised that the colours in this image are not so wrong at all... Esprit 100mm f5.5 APO/ Canon 6Da/ Optolong L.

81x240 seconds iso1600, stacked in DSS with Bias and Flats. Processed in Pixinsight.

Knight Observatory, Tomar

Camera: QHY294C Pro

Scope: SW 200/1000 Newtonian modified

Mount: SW EQ6-R Pro

Filter RGB: Optolong L-Pro 2"

Filter Ha & OIII: Antlia ALP-T 2"

Expo RGB: 100 x 30s (0.8h) + Dark, Flat, Bias

Expo Ha & OIII: 96 x 300s Light (8h)+ Dark, Flat, Bias

Controlled by StellarMate

Processed in PixInsight and Photoshop LR

Cette photo montre une région de l'espace très riche en objets astronomiques : nébuleuses par émission et réflexion, nébuleuses obscures, amas globulaires, étoiles doubles. Je désespérais de la faire car cette cible très basse sur l'horizon demande de bonnes conditions et parce que ça fait des mois que la météo n'est pas au rendez-vous ou que la Lune s'en mêle. La nuit dernière, le ciel était d'une clarté exceptionnelle comme je n'en avais vu que dans l'Atacama, au point qu'on voyait de nombreuses nébuleuses et même l'amas globulaire M4 à l'oeil nu ! Entre 0h30 et 5h du matin, j'ai fait 240 photos de 60 secondes de pose unitaire chacune pour capter la lumière ténue de ces objets. Un vent parfois trop présent et un passage nuageux court ont eu raison de 108 photos (bougées ou présentant un halo à cause du voile nuageux en transit), ne me laissant que 2h12 de pose cumulée. En voyant les images brutes, à part l'énorme et très brillant amas M4 voisin d'Antares, je ne pensais pas avoir capté la lumière colorée des nébuleuses de cette région du ciel. Et pourtant ...

Je vais décrire ici les objets visibles sur cette photo:

Tout en bas de l'image, il y a une grosse étoile orange ; c'est Antares, une énorme étoile assez proche de la Terre (550 années lumières). C'est l'étoile la plus brillante de la constellation du scorpion ; elle est donc aussi référencée sous le nom d'alpha scorpii (alpha du scorpion). Antares est une étoile binaire dont la géante rouge fait environ 800 fois le diamètre du soleil pour 18 fois sa masse. Placée au centre du système solaire, elle engloberait l'orbite de Mars ! Antares baigne dans une nébuleuse de couleur jaune orange, IC 4606, un nuage d'hydrogène moléculaire éclairé par l'étoile orange.

A sa droite, très légèrement au dessus, on voit très bien un amas globulaire formé de quelques milliers d'étoiles. C'est Messier 4 (M4, ou NGC6121) l'amas globulaire le plus proche de la Terre, distant de 7200 AL et d'un diamètre de 16 AL. Il peut être visible à l'oeil nu par une nuit très claire et est facilement observable aux jumelles.

Au dessus un peu à droite d'Antares se trouve un autre amas globulaire plus lointain, NGC 6144, distant de 29000 AL.

Au milieu d'une nébuleuse rouge bien visible au dessus de M4, nébuleuse en réalité composée de plusieurs nuages d'hydrogène, LBN1104, LBN 1105 et LBN 1106 qui apparaissent rouges, on trouve SH 2-9 fortement ionisé par l'éclat intense de sigma scorpii, appelée aussi Alniyat et qui forme ce halo bleu au centre. Sigma scorpii est en réalité un système de 4 étoiles distant de 735 AL et d'un diamètre de 4500 unités astronomiques (1 UA = 1 distance Terre-Soleil). A noter qu'Alniyat désigne aussi l'astérisme d'étoiles formées par sigma scorpii, tau scorpii et omicron scorpii.

A la verticale de sigma scorpii, au premier tiers en haut de l'image, on voit une tache blanche. Ce n'est pas une étoile mal résolue, c'est un autre amas globulaire, Messier 80 (ou NGC 6093), distant de 27400 AL et d'un diamètre de 86 AL.

Redescendons depuis M80. L'étoile brillante qui se trouve en dessous légèrement à sa gauche, c'est omicron scorpii, une géante bleue.

Au centre de l'image, on voit trois grandes nébuleuses bleues éclairées par des groupes d'étoiles en leur centre. En haut, il s'agit de la nébuleuse de rho ophiuchi, IC 4604, avec en son centre 3 étoiles visibles (en réalité 6), la plus brillante étant l'étoile double rho ophiuchi distante de 394 AL, les deux autres étant les étoiles doubles HIP80461D (distance 444 AL) et HIP 80474 (436 AL). Au milieu, on a la nébuleuse IC 4604, éclairée par l'étoile HIP 80462 (distance 452 AL). En bas enfin, perdue dans la nébuleuse d'Antares, on voit IC 4605 éclairée en bleu par iota scorpii distante de 413 AL, distante de 1800 AL.

Dans tous le reste de l'image, on voit des régions très sombres sans étoiles ou presque. Ce sont des nébuleuses obscures, des nuages moléculaires si denses (à l'échelle galactique) qu'ils empêchent la lumière en arrière plan de nous parvenir. Ils portent le nom de LDN 1745, LDN 1729, LDN 1689, LDN 1709, LDN 1704, LDN 1687, LDN 1680, LDN 1676, LDN 1675, LDN 1740, LDN 1744, LDN 1755, et j'en oublie.

Pour terminer, l'étoile bleue très brillante dans le coin supérieur droit de l'image, c'est delta scorpii une étoile double aussi appelée Dschubba et distante de 401 AL.

Ce lien vous donnera l'astrométrie de ma photo pour vous y retrouver dans ma description : nova.astrometry.net/annotated_full/6422712

Causons technique maintenant. Comme je l'ai dit, cette photo est le cumul de 132 photos sélectionnées parmi 240. Toutes ont été faites avec un Canon 1200 D défiltré partiellement par Photomax, un Objectif Samyang 135 mm f\2 ouvert à f\2.8, à travers un filtre L-Enhance Optolong. Ce sont des poses de 60 seconde, à 1600 iso, espacées de 5 secondes. Le suivi est assuré par une monture SkyWatcher Star Adventurer 2i. J'ai aussi fait 30/30/30 DOF. Le traitement (DOF, retrait de gradient, alignement et empilement, ...) a été fait sous Siril et le post-traitement sous Gimp.

The Lion Nebula.

Found in the constellation of Cepheus, the Lion Nebula when viewed from just the right perspective, actually does represent a lion. At approx 10,000 light years away

it is made up of an emission nebula and a reflection nebula.

Not bright enough for visual observation sadly, it does however make for a great imaging target.

Boring Techie bit:

Telescope: Askar FRA400

Mount: EQ6r pro

Camera: ZWO 533mc pro

Filter: Optolong L'eNhance.

Guided and controlled by the ZWO asiair+

Eighty 3 minute exposures

Stacked & processed in PixInsight with BlurXterminator, NoiseXterminator, Starnet++, Graxpert and Affinity Photo.

Gear:

Skywatcher Quattro 200p

SW HEQ5 Pro Goto

Canon Eos 100D

Lacerta Mgen2 autoguider

50mm guidescope

Optolong L-extreme 2 filter

16x600s Iso1600

* Setup:

Telescope: Refractor Orion ED80

Focal Length: 600mm

Camera: QHY163M

Mount: HEQ5 Pro

Filters: LRGB Optolong and H-Alpha 7nm Baader

Location: Silvânia / GO / Brazil

*Exposure:

Ha: 1.5 hour (subs 300s) bin1x1

R: 0.5 hour (subs 120s) bin2x2

G: 0.5 hour (subs 120s) bin2x2

B: 0.5 hour (subs 120s) bin2x2

Total: 3 hours

30.01.2025. - 23.02.2025. - New Zagreb|Popovec, Croatia

Telescope: SW 130PDS

Camera: ZWO ASI585MC PRO

Filter: Optolong L-Ultimate 1.25'' | ZWO UV/IR 1.25''

Mount: AstroBobo HEQ5 Pro (Mod by Leviner)

Guding: ZWO ASI120MMS + SVBONY 120MM F4

793x120s RGB (26h26m)

395x180s L-Ultimate (19h45m)

Total: 46h11m

There was a report of possible Nova in Messier 81 so I tried to catch it before it goes dark. To my surprise there was a small faint dot on the designated coordinates from the report. Is this Nova or not I didn't find any conformation yet, hope soon. I've recorded the OSC data from Jan.31. to Feb. 5. and then added Ha later. (in the Ha data I didn't see any star so I don't know if it's visible anymore).

Closerview here: www.flickr.com/gp/nevenkrcmarek/qQYy9V277w

Dark nebulae un Ophiuchus

Camera: Moravian G2 8300

Filters: 31mm unmounted Optolong

Mount: Ioptron CEM60 HP

Optic: Samyang telephoto lens 135mm

Frames: L 13X420 sec Bin1 -20°

Color: Canon 600D - Canon lens 135mm

Frames: 33X120 sec. f@3.5 Iso 400

Processing: Pixinsight, PS

ASI 071MC

Redcat 51

Optolong L Pro

208x180s

Rokinon 135mm f/2 @ f2.5

Player One Poseidon C Pro

ZWO AM5

No guiding

Optolong L-Quad

77 x 90 sec sub

Processed in Pixinsight and Mac Photo

Location - Sky Meadows Park VA

Redcat51

AZ-EQ5

ZWO ASI533MC + Optolong L-eXtreme

27x480" lights

Calibrated with dark and bias frames

Nebulosity4

Guiding with ZWO ASI120MC-S + William Optics UniGuide 32mm + PHD2

PixInsight

Photoshop CC

Backyard, Cairns, Australia

Bortle 5

6 heures (brutes de 60") au RC8 + réducteur x0.68 (1088 mm de focale) + ASI533MC + filtre Optolong L-Pro, Pixinsight.

De aspecto caótico, estos filamentos de gases convulsionados y resplandecientes, visibles en el cielo terrestre en dirección de la constelación del Cisne, forman parte de la nebulosa del Velo

Considerada en conjunto, la nebulosa del Velo es el enorme remanente de una supernova es decir, una nube en expansión originada por la muerte explosiva de una estrella masiva.

La luz de la explosión de la supernova original probablemente llegó a la Tierra hace más de 5 000 años. Expulsadas violentamente por el cataclismo, las ondas de choque se propagaron por el medio interestelar barriendo e ionizando toda la materia que encontró a su paso.

Realización:

-Montura: SW EQ6R

-Tubo: APM 107/700-Reductor RIccardi 0.75x

-Auto enfoque: RB Focus V2.3

-Control Energia:RB-Focus Balinor Smart PowerBox V2.0

-Cámara principal: Zwo ASI294MC Pro

-Filtro: Optolong L-Extreme

40 tomas light 300"

tomas de calibración darks y flats

Las inviernas (Guadalajara)

Tiempo exposición: 3,5 horas

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Chaotic in appearance, these filaments of convulsed and glowing gases, visible in the terrestrial sky in the direction of the constellation Cygnus, are part of the Veil Nebula.

Taken together, the Veil Nebula is the enormous remnant of a supernova, that is, an expanding cloud caused by the explosive death of a massive star.

Light from the original supernova explosion probably reached Earth more than 5,000 years ago. Violently ejected by the cataclysm, the shock waves propagated through the interstellar medium, sweeping away and ionizing all matter in their path.

Realization:

-Mount: SW EQ6R

-Tube: APM 107/700-RIccardi Reducer 0.75x

-Auto focus: RB Focus V2.3

-Energy Control: RB-Focus Balinor Smart PowerBox V2.0

-Main camera: Zwo ASI294MC Pro

-Filter: Optolong L-Extreme

40 light sockets 300"

darks and flats calibration sockets

Las inviernas (Guadalajara)

Exposure time: 3.5 hours

Takahashi FSQ-106 telescope

Paramount MX mount

ZWO ASA 2600mm CMOS camera

Optolong Ha-LRGB filters

Data acquired remotely from IC Astronomy Observatory, Oria, Spain.

Ha: 280 x 600s

OIII: 76 x 600s

SII: 83 x 600s

Data acquisition:

30-09-2024 to 21-10-2024

Processed with Astro Pixel Processor, PixInsight, Blur Xterminator, Star Xterminator, Noise Xterminator, Affinity Photo.

Astronomy tutorials and music videos on my You Tube Channel:

www.youtube.com/channel/UCdNHCly_2ueWSe-Hh4OiuDA

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THANKS TO EVERYONE FOR 1.7+ MILLION + VIEWS!!!👍👍

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Located in constellation Orion and at about 6,500 light years from us, NGC 2174 is an emission nebula, rich in hydrogen and oxygen, with an apparent diameter slightly larger than the full moon. Within it, there is a loose star cluster, NGC 2175, with recently born stars. The stellar winds and radiation from these high energetic regions carve the nebula, yielding these beautiful structures.

This image is a crop of the full FOV captured, which can be seen here: flic.kr/p/2o8rE8i

Shot at Barcarena, Portugal in January 2022.

Technical Details:

RGB: 3 x 20 x 60s

Ha: 102 x 300s

Oiii: 90 x 300s

Total integration: 17h00

TS Optics Triplet APO 800/115 | TS Optics TSFLAT2 0.79x | QHYCCD 268M | Optolong RGB | Baader Ha 7nm ! Baader Oiii 8.5 nm

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

The sky was clear last night so I pointed the 'scope at a ghost -- that's what Halloween is all about. This is the Ghost of Cassiopeia through an Ha filter. I collected about 8 hr of data last night and added it to Ha data collected in 2022. I had 17 hr of data in total and the image was made from the best 12 hr, as rated by DeepSkyStacker.

IC 59 is the upper-left part of the dust cloud, IC 63 is the "ghost" in the middle, and the lower lump/bump doesn't have a name, so I think we should call it IC Nothing. Below are a few fun facts about this little grouping.

IC 59 and IC 63 are a combination of faint, arc-shaped emission and reflection nebulae, located about 600 light-years away in the constellation Cassiopeia. Together they are approximately 10 light-years across. IC 63 is known as the Ghost of Cassiopeia.

The brightest star in the image is Gamma Cassiopeiae, which is 19 times more massive, 65,000 times brighter, and spins 200 times faster than our sun. The radiation from Gamma Cass is so intense that it affects the IC 63/59 gas/dust cloud several light years away.

Rio Rancho NM Bortle 5 zone, Months and months

William Optics Redcat 51

ZWO 183mm pro

ZWO 30mm f/4 mini guide scope and ZWO 120 Mini

Optolong Ha filter

ZWO ASI Air Pro

Sky-Watcher HEQ5

Dithering Darks Flats GraXpert

Gain 111 at -10C

Processed in DSS and PS

A Hydrogen-Alpha + Oxygen III + Sulphur II Narrowband widefield image of the Cygnus Wall. The North America Nebula (NGC 7000 or Caldwell 20) is an emission nebula in the constellation Cygnus, close to the star Deneb. The remarkable shape of the nebula resembles that of the continent of North America, complete with a prominent Gulf of Mexico.

The Cygnus Wall:

The Cygnus Wall is a term for the "Mexico and Central America part" of the North America Nebula. The Cygnus Wall has the most concentrated star formation in the nebula. The North America Nebula and the nearby Pelican Nebula, (IC 5070) are in fact parts of the same interstellar cloud of ionized hydrogen (H II region). The nebula complex is estimated to be about 1,800 light-years from Earth.

Gear:

William Optics Star 71mm f/4.9 Imaging APO Refractor Telescope.

William Optics 50mm Finder Scope.

Celestron SkySync GPS Accessory.

Orion Mini 50mm Guide Scope.

Orion StarShoot Autoguider.

Celestron AVX Mount.

QHYCCD PoleMaster.

Celestron StarSense.

QHYCFW2-M-US Filterwheel (7 position x 36mm).

QHY163M Cooled CMOS Monochrome Astronomy Camera.

Tech:

Guiding in Open PHD 2.6.3.

Image acquisition in Sequence Generator Pro.

Lights/Subs:

2 Stage Cooled CMOS

Imaged at -25°C

Gain: 20

Offset: 80

Narrowband:

S = 12 x 600 sec. 16bit FITS.

H = 12 x 600 sec. 16bit FITS.

O = 12 x 600 sec. 16bit FITS.

Calibration Frames:

50 x Bias/Offset.

25 x Darks.

20 x Flats & Dark Flats.

PixelMath RGB Channel Combination:

PixInsight Expression:

R = SII

G = (Ha*OIII)*1.5

B = OIII

Image Acquisition:

Sequence Generator Pro with the Mosaic and Framing Wizard.

Plate Solving:

Astrometry.net ANSVR Solver via SGP.

Processing:

Pre-Processing and Linear workflow in PixInsight,

and finished in Photoshop.

Photographed in the following wavelengths of light:

Optolong SHO Narrowband filters:

OIII line 500.7nm (6.5nm bandwidth)

H-Alpha line 656nm (7nm bandwidth)

SII line 672nm (6.5nm bandwidth)

Astrometry Info:

View the Annotated Sky Chart for this image.

Center RA, Dec: 314.764, 44.279

Center RA, hms: 20h 59m 03.425s

Center Dec, dms: +44° 16' 43.955"

Size: 2.27 x 1.55 deg

Radius: 1.375 deg

Pixel scale: 5.11 arcsec/pixel

Orientation: Up is 97.9 degrees E of N

View this image in the World Wide Telescope.

Martin

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The Eta Carina nebula in HOO

2 hours of total integration - 5 minute subs

Equipment:

Samyang 135 mm @f/2

ZWO ASI AIR

ZWO 183 MC

EQ6

Optolong L Extreme

Software:

ASI AIR app

Astro Pixel Processor

Starnet++ -v2

Photoshop CS6

HOO colour processing in Astro Pixel Processor

Issues

very unhappy with star shapes in the corners. Returning the lens for a replacement-hopefully will be better copy. Really want to use at f/2, if at all possible - don’t want to stop it down

An SHO Hubble palette mosaic of the North America and Pelican nebulae. 2 panes.

Data acquired remotely from IC Astronomy Observatory, Oria, Spain.

Takahashi FSQ-106 telescope

Paramount MX mount

ZWO ASA 2600mm CMOS camera

Optolong SHO filters

North America nebula:

Ha: 223 x 300s

OIII: 167 x 300s

SII: 173 x 300s

Pelican nebula:

Ha: 330 x 600s

OIII: 141 x 600s

SII: 182 x 600s

109 hours in total.

Data acquisition:

24-05-202508-07-2025

Processed with Astro Pixel Processor, PixInsight, Blur Xterminator, Star Xterminator, Noise Xterminator, Affinity Photo.

Astronomy tutorials and music videos on my You Tube Channel:

www.youtube.com/channel/UCdNHCly_2ueWSe-Hh4OiuDA

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M24 Small Sagittarius Star Cloud

Located 100,000 light years away, the cluster in the majority of the center of the image is known as Messier 24. Inside M24 is the small open cluster NGC6603. At the top center of the image is the open cluster M18. At the bottom, the red emission nebula is IC1284 and the small blue reflection nebula to its left are vdB118 & vdB119.

Luminance taken with:

QHY268M & 11" Celestron Edge w/Hyperstar -

66x120 seconds

Color taken with my 2 widefield setups:

QHY128C & Astrotech AT65EDQ-

37x300 seconds, Optolong UV/IR cut filter

QHY268C & WO Redcat51-

13x300 seconds Optolong UV/IR cut filter

23x480 seconds Optolong HA filter

9h 26m

WIDEFIELD: flic.kr/p/2qjvwX9

M8 The Lagoon Nebula

I haven't done any imaging since March....on Friday, despite the bright moon, I took some close up images of M8 using "Live Stack" in Sharpcap, 10 minutes with a QHY462C. I added this to a previous image of M8 and also added some OIII

Setup#1(for FOV)

Camera: QHY163M

Telescope: 11" Celestron Edge HD w/V4 Hyperstar

Mount: Orion HDX-110

Optolong LUM filter: 50x30sec

Setup#2(for star color & OIII)

Camera: QHY128C

Telescope: Astrotech AT65EDQ

Mount: Orion HDX-110

8x600sec Optolong LUM filter

11x480sec Optolong OIII filter

Setup#3(for core area) LIVE STACK

Camera:QHY462c

Telescope: 11"Celestron Edge HD

Mount: Orion HDX-110

LUM:30x20sec

Images processed in PixInsight, combined and tweeked in PS2020. Qhy 128 OSC data cropped and combined with QHY163M Luminance data, QHY462C LUM added for core area

The Lagoon Nebula is 8 in Charles Messier's "not a comet" list, 25 in the Sharpless catalog and 6523 in the New General Calalog.(NGC) It is a cloud of ionized hydrogen estimated to be 4000-6000 light years from earth. It can be seen with the naked eye as a gray/green patch in the constellation of Sagittarius..Almost in the center of the photo can be seen NGC 6530, an open cluster of young stars formed from material within the nebula. The entire nebula is roughly 110 x 50 light-years wide.

Captured late July 2016 using the new QHY16200 Mono CCD and LRGB Filters

Technical Information

Location: DownUnderObservatory, Fremont, MI

Captured July 30 and 31st 2016

Size: 4540x3630 pixels

Total integration Time 2.1 Hours

QHY16200A monochrome CCD cooled to -20C

QHYOAG-M Off Axis Guider

LUM 70 min, 7 x 10 min each 1x1

RGB 60 min, 4 x 5 min 2x2

Filters by Optolong

Astro-Tech AT12RC with AP 2.7" Reducer @F6.2

Paramount GT-1100S German Equatorial Mount

Image Acquisition Maxim DL

Pre Processing Pixinsight

Post Processing Photoshop CS6

The incandescence of the Eagle Nebula is laced with intricate dark lanes, globules, and huge clouds of dust which shroud ongoing star formation from direct view. The most prominent dark structures are the so-called “Pillars of Creation”, three long fingers of gas and dark dust nearly ten light years long. The Pillars are a field laboratory for the study of star formation and have been examined intensely by astronomers at visible, infrared, and ultraviolet wavelengths. Within the Pillars are much smaller, warmer, and denser regions called evaporating gaseous globules (EGGs), some of which contain just a few solar masses. The EGGs are ground zero for star formation, though it’s difficult to catch these new stars in the act of igniting because they remain obscured by cloaks of dark dust. EGGs located near bright stars are elongated by winds of light and charged particles into what look like schools of celestial tadpoles.

The stars within the Eagle Nebula appear to be in an intermediate state. Stars within the Pillars and other dusty regions remain obscured, while a cluster of some 400 new stars clearly appears in a more transparent section of the nebula. The largest of these stars has a mass some 80 times that of our Sun and the luminosity of perhaps a million Suns. The cluster formed just 2 to 5 million years ago. The nebula itself is only slightly older.

The light we see from the Eagle Nebula and its associated stars left some 7,000 years ago, but some astronomers suspect the Pillars of Creation may have already been obliterated when a massive young star within the nebula detonated as a supernova. The Spitzer Space Telescope detected evidence of a patch of hot gas near the Pillars which may have been caused by such an event about 8,000 years ago. Information from our e-book The Armchair Astronomer cosmicpursuits.com/e-books/armchair-astronomer-volume-1-n...

Two neighbouring nebulae in the northern constellation of Auriga illustrate different outcomes for an ageing star. The nebula on the right, #221 in the Sharpless catalog, is a supernova remnant, created when a star exploded catastrophically. The nebula on the left, Sharpless 216, is a planetary nebula created when an ageing star expelled its outer layers.

This image is an integration of a total of 22 hours of data captured with a William Optics Redcat51 telescope and ASI2600MCPro camera. An Optolong L-eXtreme filter was used and all post-processing was carried out in PixInsight.

This cluster (M5 or NGC 5904) is too big for the setup I've been using a lot recently, so I shot it with the Hyperstar at a focal length of 535 mm instead of the 0.63x reducer at 1530 mm. I just got a set of 2" Optolong LRGB filters from Starizona to use with the Hyperstar and Atik 414-EX camera, and this was my first target.

L: 35 10s exposures

R: 66 13s exposures

G: 68 13s exposures

B: 69 13s exposures

All shot with a guided Celestron Edge HD 925 on the evening of 2022-06-28. Preprocessing with flats, dark, and bias frames in Nebulosity; registration, stacking, channel combination, and initial processing in PixInsight; final touches in Photoshop. North is at the top and east at the left.

Compare this with my first shot of this object from 10 years ago:

flic.kr/p/bN2DDF

I think I've made some progress

About 20 years ago I saw Andromeda for the first time in one of my first photographs at night. Since then, it has been a big dream of mine to be able to photograph her "in large". And this dream has finally come true :-)

After nine nightly imaging sessions and many processing sessions last September, I finally finished this beautiful deep-sky image.

The Andromeda Galaxy is a majestic spiral galaxy located approximately 2.5 million light-years away from Earth. Andromeda is on a collision course with the Milky Way, and the two galaxies are expected to merge in about 4 billion years, forming a new galaxy often referred to as "Milkomeda." Andromeda is home to over one trillion stars, more than twice the number in the Milky Way. Remarkably, it was one of the first galaxies observed using a telescope in the 17th century, and its light takes over two million years to reach us, offering a glimpse into the distant cosmic past.

Equipment:

Askar FRA400, 400mm f5.6

ZWO AM5

ZWO ASI2600MC Pro

Acquisition:

UV-IR Filter: 250 x 180s (12:30h) / 4 Sessions

Optolong L-eXtreme Filter: 190 x 300s (15:50h) / 5 Sessions

Location:

Kassel, Germany

Bortle 4-5

Pseudo SHO

R channel used as Ha

G channel used as SII

B channels ased as OIII

R(SII)/G(0.8*Ha+0.2*OIII)/B(OIII)

Redcat51 + ZWO ASI533MC + Optolong L-eXtreme

ZWO ASI120MC-S + William Optics UniGuide 32mm

AZ-EQ5

20x480" lights

Nebulosity4

PHD2

PixInsight

Photoshop CC

Cairns (Australia)

Bortle 5

Horsehead Nebula in LRGB-H, virst version.

LRGB was imaged from a Bortle 3 site while HA was taken from my Bortle 7 backyard.

Second image: LRGB-H

Equipment:

TS-80-CF Apo

ZWO ASI294MM Pro

Antilla LRGB / Optolong Ha 3nm

ZWO AM5

Images:

Ha: 80 x 300s

L: 60 x 60s

R: 30 x 90s

G: 30 x 90s

B: 30 x 90s

Sunflower galaxy M63, is a spiral galaxy that lies 35 million light years from us in constellation of Canes Venatici. Gear setup: Celestron edge HD8 @ f/7, iOptron GEM45 guided by OAG + ZWO 174MM, ZWO 2600MC @ -5, Optolong L-Pro. Lights subs 180sec x 68, Darks 10, Flats 10, Bias 50, all Bin 2x2. Total exposure 3.4 hours. Captured by APT, Sharpcap pro, PHD2. Stacked in APP, Processed in PI & PS.

All data taken from my Bortle 8/9 backyard in Long Beach, CA

Celestron Edge HD 925 at 1530 mm focal length (0.87"/pixel scale) with an Atik 414-EX camera and Optolong LRGBHa filters.

L: 150 min

R: 40 min

G: 40 min

B: 40 min

Ha: 280 min

I have taken data for this image over at least 6 different nights, with the first session being in December 2022. The last addition was data taken on 2023-08-03.

Preprocessing in Nebulosity; registration, stacking, channel combination, and initial processing in PixInsight; final touches in Photoshop with a tiny amount of noise removal in Topaz Labs.

NGC 7331 is the prominent spiral galaxy to the right in this image. The galaxy is a bit under 50 million light years away, and it shows a complex structure of dust lanes, along with some H II regions in its spiral arms and disks. These appear as pink dots within the galaxy in this image. The left half of the image is the Deer Lick Group of galaxies. This is not a true group of galaxies -- they are too far apart from each other to be gravitationally bound in a group. They just happen to all lie in the same direction on the sky.

These galaxies pass directly overhead from my location.

The famous California nebula in Perseus, a large cloud of gas and dust actively emitting the characteristic red light of hydrogen alpha located 1000 light years away in a particularly dusty part of the Perseus arm of our Milky Way. The hot bright star Xi Persei illuminates the nebula.

This widefield image was shot with a William Optics Redcat51 scope and ASI 2600MC OSC camera. It is an integration of 9 hours data shot with an Optolong L-eXtreme filter and 10 hours shot with just the built in UVIR cut filter. All post-processing was carried out in PixInsight.

● Object specifications:

 ► Designation: LBN 331

 ► Object type: H2 region

 ► Stellar coordinates:

  -Ra: 20h 13m 58,75s.

  -DEC: +47° 41′ 44.1″.

 ► Distance: ~1174 Ly.

 ► Constellation: Cygnus.

 ► Magnitude: /

● Gear:

 ► Telescope: SW 200/1000 F5

 ► Mount: IOptron CEM60-ec

 ► Camera: QHY294C

 ► Autoguiding: guidescope 50mm + ZWO asi

  120mm

 ► Other optic(s): TS coma corrrector Maxfield 0.95X

 ► Filter(s): Optolong L-extreme 2" / Optolong L-pro 2"

● Softwares:

 ► Acquisition: Nina

 ► Autoguiding: PHD guiding 2

 ► Preprocessing: PixInsight

 ► Processing: PixInsight

● Data acquisition:

 ► total ~8H40

  -Ha: 7H50, 300sX95

  -RGB: 50min, 120sX27

 ► Gain: 1601

 ► Offset: 60

 ► Cooling: -5°C, -15°C

 ► Date(s): 11/08/2024, 28/08/2024, 29/08/2024 | 3 nights

Telescope: Celestron Edge HD 800 with 0.7 reducer

Camera: ZWO ASI 071MC Pro

Exposure: 64 x 10min @ unity gain -5°C

Filters: Optolong L-extreme filter

Mount: iOptron CEM60

Location: Beveren-Waas Belgium

Date: 2025/08/23 + 24

Monture : EM 200 Temma 2Z

CCD : ASI 071

Scop : FSQ 85 EDX + Tak QE 0.73

Filtre : Optolong L-Pro

Expo : 65x60 sec (1h05)

51 DOF

Echelle de Bortle: 6-7

Tomada desde el centro de la ciudad de calama

Usando:

Canon 6D

Canon 400mm f5,6 @5,6

Filtro #optolong Lpro

#Skywatcher star adventurer

Sin guiado

Fotos

276 fotos de 30 seg

Iso 1600

Secuencia tomada con magic lantern

Apilado en #dss

Procesado en #pixinsight después #Photoshop

La nébuleuse du croissant

Matériel :

Newton sw 150/750 pds

Heq5 pro

Correcteur/réducteur 0.95x

Asi533mc pro

Filtre Optolong L-extreme

Guidage diviseur optique + asi290mm mini

Focuseur Eaf v2

Asiair pro

Exifs :

Lights 83 x 120s, gain 100, 0°C

Darks 100

Darkflats 400

Flats 15

Prétraitement/traitement : Pixinsight

Post : Photoshop

The M78 nebulae complex in Orion. This is an LRGB image taken on a QHY163M monochrome camera using Optolong filters. The scope was a William Optics FLT110 with Flat4 mounted on a Skywatcher AZ EQ6-GT. Image sequencing was managed via Sequence Generator Pro and PHD2, auto-focus was controlled with a Lakeside Astro focus motor. Over 5 hours of data, in 2 minute subs, in each of the L, R, G and B channels. All post-processing was done in PixInsight.

Taken from Prachinburi, Thailand.

The Eagle Nebula at top (aka M16) and the Swan Nebula (aka M17), straddling the Serpens-Sagittarius border. The star cluster below M17 is M18, while the small cluster above M16 is Trumpler 32. The Swan Nebula is also called the Omega or the Checkmark Nebula. The Eagle Nebula contains the dark towers called the Pillars of Creation made famous in the Hubble images.

This is a blend of a stack of 9 x 8-minutes at ISO 3200 through the Optolong L-eNhance dual-band nebula filter, with a stack of 6 x 5-minutes at ISO 800 with no filter, all through the SharpStar 94mm refractor at f/4.4 and with the Canon EOS Ra camera. I used the AstroHutech filter drawer/adapter to aid swapping out the filter. Autoguiding was with the MGEN3 stand-alone autoguider. All images stacked, aligned and blended with Photoshop.

I shot this set on June 14/15 on one short night a week before summer solstice from home at latitude 51° N, so the sky was never fully dark, making colour correction a challenge, resulting in a somewhat monochromatic look. In addition, the time to shoot was only 2 hours or so, limiting the number of sub-frames. Plus this field is low in the south from my latitude.

Also taken on a very warm +24° C night for my western Canadian location, all without darks or LENR thermal noise reduction, as a test, just with frame-to-frame dithering to reduce thermal speckling which was abundant on the filtered high-ISO shots. Stacking with a median stack mode eliminated most, though not all, of the speckling.

Camera: QHY294C Pro

Scope: SW 200/1000 Newtonian modified

Mount: SW EQ6-R Pro

Filter RGB: Optolong L-Pro 2"

Expo RGB: 145 x 300s Light + Dark, Flat, Bias

Controlled by StellarMate

Processed in PixInsight and Photoshop LR

Data: 6 de Maio de 2019

Frames:

Optolong Blue 1.25": 15x120" -10C bin 2x2

Optolong Green 1.25": 15x120" -10C bin 2x2

Baader H-Alpha 1.25 7nm: 11x300" -10C bin 1x1

Optolong Lum 1.25": 18x300" -10C bin 1x1

Optolong Red 1.25": 15x120" -10C bin 2x2

Captura: 3.9 horas

Dark frames: ~15

Flat frames: 0

Dark flat frames: 0

Bias frames: 0

I think I started with HSO pallette, although by the end of pushing around colors I'm not sure what it is. Very interesting to me how the contrast of narrowband mapped to RGB provides much more apparent detail.

Equipment

Imaging Telescopes Or Lenses

Astro-Tech AT66ED

Imaging Cameras

QHYCCD QHY163M

Mounts

Celestron Omni CG-4

Filters

Astronomik H-alpha CCD 12nm 2" · Optolong SII 6.5nm 2" · SVBony OIII 7nm 2"

Acquisition details

Dates:

July 19, 2022 · July 20, 2022 · July 22, 2022

Frames:

Astronomik H-alpha CCD 12nm 2": 136x120" (4h 32') f/4.8 -10°C

Optolong SII 6.5nm 2": 140x120" (4h 40')

SVBony OIII 7nm 2": 132x120" (4h 24')

Integration:

13h 36'

Darks:

100

Bias:

100

Avg. Moon age:

22.34 days

Avg. Moon phase:

48.04%

Basic astrometry details

Astrometry.net job: 6039789

RA center: 00h04m33s.1

DEC center: +67°11′27″

Pixel scale: 2.350 arcsec/pixel

Orientation: 337.830 degrees

Field radius: 1.803 degrees

Find images in the same area

Resolution: 3284x4441

File size: 17.5 MB

Data source: Backyard

A re-process of my data with new techniques to create a Bi-colour image.

57 x 3min. subs. RGB

Askar FRA400 with Optolong L-eNhance filter

Altair Hypercam 533CPRO (Offset: 50 / Gain: 200 / HCG: On / Bin: 1x1 / -10degC.)

Processed in Siril and Affinity Photo

SH2 132 La nébuleuse du lion 18H30 intégration de 81X10MN +10X30MN caméra 2600 azeq6 FSQ85 filtre optolong l'XTREM

sh2-132, la nébuleuse du lion se situe à environ 10000 années lumière dans la constellation de Céphé .Une nébuleuse très faible qui demandera de nombreuses heures de pose pour réussir a voir quelque chose