Target:M63 Sunflower Galaxy, a flocculent spiral galaxy in the constellation of Canes Venatici at a distance of 29 million light years.

Location:10/05/2021 St Helens UK Bortle 8 No Moon but wind gusts.

Aquisition:20x 120s Red, 20x 120s Green, 18x 120s Blue. Total Integration 116min.

Equipment:Skywatcher 200P Newtonian, HEQ5 Pro, Baader MK3 Coma Corrector, ZWO AFWmini and filters with Optolong LPro in train. Altair Astro H183M Pro.

Guiding:Skywatcher 9x50 finder with ZWO ASI120MM mini.

Software:Astroberry, Ekos, PHD2.

Processing:Affinity Photo, Siril, StarNet++

Memories:Only 1h 33m dark sky available for me this night which will be the last until August at my latitude so no chance of getting more integration time. This brings my quite successful galaxy season to a close for this year.

First light with Sharpstar z4. Location Bortle 6 suburban

30 x 1 minute exposures plus 30 x 5 minute exposures

Gain 117 offset 5

Equipment

EQ6 Pro/Sharpstar Z4/Optolong L Pro/ZWO ASI 183 MC

Software

NINA/Astro Pixel Processor/ Photoshop CS6/Topaz AI/NoiseXterminator/ Starnet ++ v2

processing notes

Short exposures stacked and registered with long exposure stack; star layer extracted

longer exposures stacked and registered with short exposure; starless layer created, noise removed and stretched

Star layer from short exposure added in at 80 % opacity to reduce intensity

Final noise reduction with NoiseXterminator at 70 %

Issues

focus very soft. some artifacts around stars- is this due to the Lpro? optical train? Gain too high?

many stars are saturated so very possible gain was too high for this configuration;

focus definitely needs improvement

Also seeing (and transparency) on the night was execrable

CCD inspector in ASTAP showed no tilt, unroundness of 1.1 (in general) and no aberration so that's the good news

Faint green circular light is surrounding the planetary nebula, though it may be of reflection optical ghost. There look three dark belts probably due to shadow of four vanes at the entrance of the reflector optical tube assembly. A band of shadow is missing. I will image the object again with a suitable APO refractor telescope.

equipment: Guan Sheng Optical Ritchey–Chrétien telescope RC 10" f8 with aigrette pattern mask on the vanes, TS 2.5" field flattener, Optolong L-ultimate Dual Narrow Band Filter, and Canon EOS R-SP4II, modified by Seo-san on SkyWatcher CQ350 Pro Equatorial Mount, autoguided with TS-OAG 9mm, ZWO ASI 120MM-mini, and PHD2 Guiding

exposure: 4 times x 1,800 seconds, 4 x 240 sec, and 6 x 60 seconds at ISO 6,400 and f/8.0

site: 2,360m above sea level at lat. 35 20 13 North and long. 138 43 57 East in the parking on southern slope of Mt.Fuji 富士山富士宮口五合目駐車場 Ambient temperature was around 4 degree Celsius or 39 degrees Fahrenheit. Wind was mild, and SQML was up to 20.38. 18.8-day 76% illuminated moon was in the sky. Seeing was bad, and guide error RMS was around 1".

I captured the RGB data on the 7th March 2022 and combined the HA data taken with an Atik414ex camera taken back in 2020.

Equipment used

Sky-Watcher EQ6-R Pro mount

Takahashi FSQ106 @F/5

ASI 553MC Pro camera

2” Optolong L-Pro filter

QHY Mini guide scope

Lodestar x 2

Software used

Maxim DL V6

Pixinsight

PhotoShop

RGB = 67 x 3 min

HA = 27 x 10 min

Total Exposure 8 hrs 25 min

Image taken from Basildon,Essex, UK.

This is the North America Nebula (NGC7000). I spent 4 nights imaging this and ended up throwing out two entire nights of images (too much moon glow and poor seeing), ultimately using 7 hours of subexposures. This is a false color representation using a H(H+O)O color palette. The images were taken using a dual narrowband light pollution filter.

The cygnus wall is the W shaped brown/orange part of the nebula, lower right of center.

Astrobin: www.astrobin.com/26r7x7

Total integration time: 7h 5minutes

Location: Southern Maryland, USA (Bortle 6)

Dates: 08/04/2021, 08/05/2021

==Gear==

Mount: SkyWatcher EQ6-R Pro

Imaging Telescope: William Optics Zenithstar 61 II APO

Field Flattener: William Optics Flat 61A

Imaging Camera: ZWO ASI 2600MC Pro

Guide Scope: ZWO 30 mm f/4 Mini Guide Scope

Guide Camera: ZWO ASI120MM

Auto Focuser: ZWO EAF

LP Filter: Optolong L-Enhance

==Acquisition==

Light Frames: 85 x 300s, -10C, Dithered

Dark Frames: 1 master frame (32 x 300s) -10C gain 100, -10C

Flat Frames: 32 each night

Flat Darks: 32 each night

==Stacking==

DSS stacked(Kappa sigma, per channel background calibration)

==Processing==

StarTools:

Autodev, Crop, Bin 71%, Wipe, FilmDev, Contrast, HDR, Sharpen, Deconvolution, Color, Shrink Stars(Dim + Unglow), Noise reduction

Affinity Photo:

Curves (Master, Red, Blue), Vibrance

March 24, 2023

Naples, FL

Equipment--

Telescope: Explore Scientific ED 80, field flattener (no reducer), 480mm focal length

Mount: Sky-Watcher EQ6R-Pro

Camera: ZWO ASI204MC-Pro

Guide scope: Williams Optics 50mm guide scope

Guide camera: ZWO ASI120MM-S

Software: NINA, PHD2

Imaging--

Lights: 36x60s

Darks, Flats, DarkFlats, Bias: assorted

Sensor temp: -10.0

Filter: Optolong L-Pro

Sky: Bortle 5 (nominal)

Post processing--

Software: PixInsight, Photoshop

Gabriela Mistral Nebula (NGC3324) along with the stunning Gem Cluster (NGC3293) within Carina. This has unexpectedly become my favourite DSO image I've taken since starting this hobby.

Feel free to peep in on the full resolution image and hope you enjoy it as much as I did.

.

Total exposure time 19.85 hours, captured from Auckland, NZ (Bortle 5 backyard)

RGB 10x60s in each Channel (30mins), Ha 54 x 3mins (2.7hrs), Sii 129 x 3mins (6.45hrs), 204 x 3mins (10.2hrs)

RisingCam IMX571m, Skywatcher Esprit 100, Antlia 3nm Narrowband and Optolong LRGB Filters. Skywatcher EQ6 pro mount.

M51 is an astronomical object in messier's catalog that includes two distinct galaxies in the constellation Canis-Hunts:

The largest and most famous Vortex Galaxy (also known as NGC 5194 and sometimes M51A) is a classic spiral galaxy. It was discovered by Charles Messier on October 13, 1773.

The smaller companion galaxy known as NGC 5195 (or even M51B), is partially covered by a dust arm of the Vortex spiral (with which it interacts) and was discovered by Pierre Méchain in 1781.Shooting data:Camera canon eos 1100d fullspectrum,canon lens 75/300 to 200mm- f 7/1 - iso 1600 - 75x40s -10 dark - optolong filter l-pro eos clip - use of lx2 mini astroinseguitor - acquisition with backyard eos - sum with sequator and photoshop processing

48x300" + 18x600"

QHY8L

Sky-Watcher Equinox 80/500 ED

Sky-Watcher NEQ6-Pro

Optolong L-Pro

SW Esprit100 + ASI1600MM pro + Optolong 7nm Ha filter + NEQ6pro Rowan Kit - 46x3 min + 49x30" - 80 darks. Edit: PS and PIX

The Pleiades or M45 (part of).

Skywatcher 200p on NEQ6 mount, with guiding and dithering every 10 images.

Optolong CLS-CCD filter, Baader MPCC M3. ASI294MC Pro at -20C. 67 x 60 second exposures (1 hour 7 minutes) at Gain 121, Offset 30 , 20 dark frames, 30 flat fields, 30 dark flat frames.

Processed in APP, Topaz de-noise and Photoshop.

The main stars are over exposed and it was a bit windy. 13th November 2020

This is the Crescent Nebula captured over 5 nights in June and July, total integration time of 7hr 25m from my Bortle 8 backyard.

The Soap Bubble is visible to the left center of the image. My Astrobin link below has a much higher res version as well as a starless version so it's more clear.

Equipment:

- Askar 71F

- ZWO ASI2600MC Pro

- Optolong L-eXtreme filter (89 × 300")

- iOptron CEM40

- Software: Adobe Photoshop, Pleiades Astrophoto PixInsight, Siril Team Siril

AstroBin: app.astrobin.com/i/dfh3uz

I post Astro content on YouTube for those interested: www.youtube.com/Naztronomy

This is a view of Sh2-155 - The Cave Nebula, found in the constellation Cepheus. This is just over 9-hours of collected data in 2022 and 2023 which I have finally combined. The Cave Nebula is a dim and very diffuse bright nebula within a larger nebula complex containing emission, reflection, and dark nebulosity. It is located in the constellation Cepheus and is approximately 2400 light years from Earth.

Tech Specs: Sky-Watcher Esprit 120ED Telescope, ZWO ASI2600MC + Optolong L-eXtreme glass filter, running at 0F, 9 hours and 5 minutes using 300-second exposures exposures, Sky-Watcher EQ6R-Pro pier mounted, ZWO EAF and ASIAir Pro, processed in PixInisght. Image Date: October 2022 and September 2023. Location: The Dark Side Observatory (W59), Weatherly, PA, USA (Bortle Class 4).

3 hours exposure with Takahashi TOA130, Nikon D810a, Optolong LPR filter

William Optics FLT91/0.8x reducer

ZWO ASI2600MC Pro

Optolong L-Enhance and L-Ultimate Narrowband filters

Processed with PixInsight and Affinity Photo 2 and cropped. You can see the full photo (uncropped) here: flic.kr/p/2ocbiXt

Integration time: 7 hours across 5 separate sessions. Last session just yesterday (17th Jan '23)

Acquisition details: astrob.in/so0tap/G/

Andromeda Galaxy M31 - first light on DSO with Askar ACL200 f/4 APO

[EN] The full moon and some high clouds didn't stop me from testing the Askar ACL200 lens on a deepsky object. I picked an easy object i.e. Andromeda - our neighbour galaxy. The exposure time was limited and conditions were not ideal but enough to show the performance of this APO lens. I'm really please with the result.

[NL] De volle maan en enkele hoge wolken weerhielden me niet om de Askar ACL200-lens op een deepsky-object te testen. Ik koos een makkelijk object, namelijk Andromeda - ons buursterrenstelsel. De belichtingstijd was beperkt en de omstandigheden waren niet ideaal, maar voldoende om de prestaties van deze APO-lens te laten zien. Ik ben alvast blij met het resultaat.

Astrobin link: astrob.in/idm0r9/0/

📷 ZWO ASI533MC PRO - Optolong L-Pro filter

🌌 Optolong L-Pro 27 lights - 180 sec - gain 101 - offset 40 -10°c

🔭 Ankar ACL200 f/4 APO lens on Explore Scientific EXOS2-GT Eq mount with PMC Eight goto

💫 guiding with ZWO ASI120 MC-S on TS-Optics 50mm

💻 PHD2, N.I.N.A, PixInsight, TopazDenoise AI

📍🇧🇪 Belgium, Class 6 Bortle

Data - 02/04/2021

Hora - 19:19 ~ 20:44 local (-3 UTC)

Lat - 7,13S

Log - 34,83W

Local - João Pessoa, PB - Brasil

Bortle - Class 8~9

Câmera - Canon T3i modificada

Lente - Canon LII USM 200mm F2.8 @F4 (320mm APS-c)

Filtro CLS-CCD Clip Optolong

ISO - 1600

Montagem - EQ5

Motorização - On Step

Guider - SW 8x50 + SVbony 105

Light - 96 x 30s (48 min)

Flat - 15 x 1/2500s

Dark Flat - 15 x 1/2500s

Dark - 15 x 30s

Bias - 15 x 1/4000s

Software Captura - APT/PHD2

Softwares Processamento - DSS/PIX/PS

#astfotbr

Image of tarantula nebula using Optolong Hydrogen Alpha, Sulphur II and Oxygen 3. A combined total of 16 hours of exposure.

QHY23 & Canon EF50mm F/1.8 lens at F/2.8

22x120 Optolong Luminance Filter

Center (RA, Dec):(9.796, 41.701)

Center (RA, hms):00h 39m 10.977s

Center (Dec, dms):+41° 42' 04.736"

Size:13.7 x 11 deg

Radius:8.795 deg

Pixel scale:14.8 arcsec/pixel

Orientation:Up is 281 degrees E of N

SIMPLE = T / file does conform to FITS standard

BITPIX = -32 / number of bits per data pixel

NAXIS = 3 / number of data axes

NAXIS1 = 4144 / length of data axis 1

NAXIS2 = 2822 / length of data axis 2

NAXIS3 = 3 / length of data axis 3

EXTEND = T / FITS dataset may contain extensions

COMMENT FITS (Flexible Image Transport System) format is defined in 'Astronomy

COMMENT and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H

MIPS-FHI= 1 / Upper visualization cutoff

MIPS-FLO= 0 / Lower visualization cutoff

BZERO = 0 / offset data range to that of unsigned short

BSCALE = 1 / default scaling factor

DATE = '2023-06-25T06:12:14' / UTC date that FITS file was created

DATE-OBS= '2023-06-21T08:52:44.660028' / YYYY-MM-DDThh🇲🇲ss observation start,

INSTRUME= 'ZWO ASI294MC Pro' / instrument name

OBSERVER= ' ' / observer name

TELESCOP= 'EQMod Mount' / telescope used to acquire this image

ROWORDER= 'BOTTOM-UP' / Order of the rows in image array

XPIXSZ = 4.63 / X pixel size microns

YPIXSZ = 4.63 / Y pixel size microns

XBINNING= 1 / Camera binning mode

YBINNING= 1 / Camera binning mode

FOCALLEN= 390.3 / Camera focal length

CCD-TEMP= -10.5 / CCD temp in C

EXPTIME = 60 / Exposure time [s]

STACKCNT= 84 / Stack frames

LIVETIME= 5040 / Exposure time after deadtime correction

EXPSTART= 2.46012e+06 / Exposure start time (standard Julian date)

EXPEND = 2.46012e+06 / Exposure end time (standard Julian date)

IMAGETYP= 'Light ' / Type of image

CVF = 0.399 / Conversion factor (e-/adu)

GAIN = 200 / Camera gain

The Hercules Cluster (Abell 2151) is a cluster of about 200 galaxies 500 million light-years distant in the constellation Hercules

Reprocessing of an image taken in 2018

Camera: Moravian G2 8300

Filters: 31mm unmounted Optolong

Optic: Celestron 9 1/4 Starbright - Astro Physics telecompressor 0.67X

Mount: Takahashi EM200 Temma 2M

Autoguider: Magzero QHY 5L II, OAG 9mm TS, Phd guiding

Frames: L: 22X600sec bin 2 -30°

Processing: Pixinsight, Maxim, Photoshop

A rather faint nebula in Auriga, Sharpless 224 is the remnant of a supernova explosion. This image is an integration of 19 hours of data captured with an Optolong L-Ultimate dual narrowband filter and it really needs at least double that. I also took 7 hours with a luminance filter for the stars. The camera was the QHY268C and my telescope was the William Optics Zenithstar 103. All post-processing was carried out in PixInsight.

This uses 10 60s stacks each of R, G, and B filter images. The best 55% of red stacks were used along with the best 45% of green and blue stacks. Captured with a Celestron Edge HD 925 with a ZWO ASI120MM camera and Optolong RGB filters using FireCapture 2.5. Stacking done in AutoStakkert, initial processing in PixInsight, derotation and channel combination in WinJUPOS, final processing in Photoshop.

Central meridian on Mars is 177° in this image. Olympus Mons is visible at the right edge of the image, and there are clouds above the north polar cap (at top).

CCD Moravian G2 8300 - 135mm Samyang lens f/2 @f/3.5

Frames: H Alpha 7nm 30X600 sec. + OIII 6.5nm 33X600 sec. Bin1 -20°

Filters: 31mm unmounted Optolong

Colors: Canon 600D - 135mm Canon lens f/2,8 @f/4

Frames: 220X150 sec. ISO 800

Mount: Ioptron CEM60 HP

Processing: Pixinsight, Photoshop

About 25 Hours Exposure with Spacecat51 and ASI533 MC Pro set to -10 degree and Unitygain. Off-Axis Guiding with PHD2. Autofocus via Deepskydads AF3. SGPro for Acquisition. Processing in PixInsight

I used the Baader UHC-S Filter but it produces Halos around Stars. Next time I'll use my new Optolong L-Extreme Filter. But I am still happy with the result.

astrob.in/qgaq8x/0/

Canon EF 400mm f/2.8L USM

Caméras D'Imagerie

ZWO ASI2600MC Pro

Montures

Sky-Watcher EQ6-R Pro

Filtres

Optolong L-eXtreme F2 2"

Accessoires

Astromechanics ASCOM Canon lens controller · ZWO EFW 5 x 2"

Logiciels

Adobe Photoshop · Pleiades Astrophoto PixInsight · Siril Team Siril · Stefan Berg Nighttime Imaging 'N' Astronomy (N.I.N.A. / NINA)

Instruments De Guidage

TS-Optics TSL80D 80mm Deluxe Guiding/Finder Scope

Caméras De Guidage

Player One Mars-M

The Owl Nebula is a planetary nebula located 2003 light years from earth.

For this shot, I took 3 hours worth of RGB data and calibrated and integrated the subs along with calibration frames in PixInsight

Telescope: Celestron C6N

Guide Scope: Orion 50mm

Guide camera: ASI120MC

Software: SGPro for plate solving, phd for guiding, and APT as my capture software

imaging camera: Canon T7i modded

Filter: Optolong CLS CCD filter

THE TADPOLES.

Space is weird.

Here’s my latest image of IC 410, an emission nebula in the constellation of Auriga. The “Tadpoles” in this image are 10 light-year long regions of active star formation. This image is shot in HOO which closely resembles true colour.

Technical details:

- Skywatcher EQ6R-Pro

- ZWO ASI 294MC-pro

- Explore Scientific ED APO 102mm F7 FCD-100 Triplet Carbon Fibre

- Altair starwave 0.8x field flattener

- ZWO ASI-120MM-mini guide camera

- Skywatcher Evoguide 50ED guidescope

- 2 inch mounted Optolong L-eXtreme

- ZWO EAF

- Pegasus powerbox advance

Acquisition and processing:

- 34 x 300s (2h 50min), gain 125, offset 30, -15c

- Darks - 30

- Flats - 30

- Darkflats - 30

- APP/PS/Topaz/StarXterminator

IC 5067 object, also known as Pelican nebula, is located in constellation Cygnus. Is part of the same H-alpha emission region of the famous North-America nebula. Dark nodules or rather "Bok globules" can be easily observed. They are formed by molecular hydrogen and dust, being usually star formation areas. These Bok globules are just the ones that define the "eye" and the inner structure of the "beak" of this giant Pelican which spans 30 light-years and "flies" 1,800 light-years away from us.

Telescope: William Optics ZenithStar 73 with 0.8x reducer-flattener

Camera: ASI 183MC Pro with Optolong L-Enhance filter

Mount: Skywatcher EQ6-R Pro

Autoguiding scope and camera: QHY mini 130mm + ASI 120MC-S

Capture sequence with ZWO Asiair

50 x 360" lights (5hr total integration) + 20 darks.

From Sierra Norte in Sevilla, Spain (bortle 4 skies).

Stacked in DSS, processed with Pixin LE and PS.

An 83% illuminated Venus imaged during the afternoon of 23.05.18 with IR and UV filters.

The resultant colour image was generated by mapping the Baader 685nm IR filter to red, the UV filter to blue and a synthetic green (an average of R & B) being mapped to the green channel.

Imaged with a Celestron C8 a ZWO290MM camera and Optolong UV and Baader IR filters.

NGC2359 is an emission nebula located 12,000 lightyears away in Canis Major. It's also known as Thor's Helmet, given its similarity in shape to the Norse god's famous helmet. The nebula is produced by a massive, hot Wolf-Rayet star emitting a stream of charged particles known as a stellar wind that's expanding outwards to produce an interstellar bubble.

This is the second target I imaged with my brand new FLT 132, so second light :-). Still trying to get acquainted with this new beast of a telescope, balance it properly on the AM5 mount and TC40 carbon fibre tripod. The two nights I managed to image, were partly cloudy and windy, so it was an added challenge to get good guiding. I imaged with the 1.0x FLAT68III flattener, so at the native 910mm focal length and a narrowband (3nm Ha and Oiii) Optolong L-Ultimate filter.

This was a total integration time of 5h45m. Preprocessed with PixInsight and post-processed with PixInsight and Affinity Photo 2.

SHO Palette version here: flic.kr/p/2psmDMU

More acquisition details in astrobin: astrob.in/osjioy/D/

Thanks for looking and clear skies.

Cette première partie de nuit, la lune était encore couchée et j'en ai profité pour faire cette photo grand angle de la constellation d'Orion, des pléiades, des hyades, de la planète Mars et de la comète C/2023 E3 (ZTF).

J'ai fait la photo avec un Canon 1200 D dp à 800 iso, un objectif Samyang 24 mm f/1.4 @f/2.8, un filtre Optolong L-Enhance, une Star Adventurer 2i. J'ai accumulé 233 poses de 90 sec, soit 5h48 cumulées. J'ai prétraité l'ensemble sous Siril avec 40/40/40 DOF. Toute la phase de traitement manuel (prétraitement, gradient sur la séquence, alignement, empilement, et post-traitement) a été faite sous Siril. J'ai réalisé d'une part l'alignement sur les étoiles, d'autre part sur la comète. J'ai réalisé une starless des la photo alignée sur les étoiles avec Starnet V2. L'ensemble a été traité sous Gimp pour les finitions. PS: le traitement a été complexe d'une part pour faire ressortir la comète, d'autre part pour faire ressortir les nébuleuses de ce fond lumineux.

Concernant les objets présents sur la photo, voila l'astrométrie : nova.astrometry.net/annotated_full/8012853

Il y a du monde !

On December 3, 2021, the unusual meeting of comet C / 2021 A1 (Leonard) with the globular cluster M3 took place.

Unfortunately, the weather in Poland, as usual, did not show good, and in practically the whole country it was completely cloudy. However, sitting for hours over the weather forecasts, there was a shadow of hope and there was a chance for a literally hourly weather window around 3 am. As usual, as in a hurry, after arriving at the place, the equipment refused to obey, but after 20 nervous minutes, everything was properly started.

Comet C / 2021 A1 was discovered on January 3 by astronomer Greg Leonard at Mount Lemmon Observatory in Arizona.

The comet is traveling at about 70.6 km / s relative to Earth, which is very fast. It is estimated that the comet's closest approach to Earth will occur on December 12, 2021, and its brightness may reach around 5 or even 4 magnitude.

In the sky, Comet C / 2021 A1 can be found between the constellations of the Hounds, Boar and Braid Berenice.

In addition to the comet and the globular cluster M3, the spiral galaxy NGC 5263 was also recorded in the image.

The M3 cluster was discovered by Charles Messier on May 3, 1764, and is one of the largest and brightest clusters, it consists of over half a million stars.

Equipment:

- ASI 2600 MC Cool Pro

- TS APO 94 EDPH

- Optolong L-PRO

- IOptron Cem25P

- 45x60s

- unity gain (90)

- processed inPixInsight, Photoshop

First attempt at M31 Andromeda Galaxy last night.

William Optics Z61

ZWO ASI2600MC

Optolong L Pro filter

EQ6R Pro Mount

ZWO ASIAIR PRO

ZWO 120 mini guide scope and camera

67 x 3 min Exposures at 0c stacked and processed in Pixinsight

Bortle 6 Skies

The Andromeda Galaxy, also known as Messier 31, M31, or NGC 224 is a barred spiral galaxy approximately 2.5 million light-years Earth and the nearest major galaxy to the Milky Way.[ The galaxy's name stems from the area of Earth's sky in which it appears, the constellation of Andromeda, which itself is named after the Ethiopian (or Phoenician) princess who was the wife of Perseus in Greek mythology.

The virial mass of the Andromeda Galaxy is of the same order of magnitude as that of the Milky Way, at 1 trillion stars. The mass of either galaxy is difficult to estimate with any accuracy, but it was long thought that the Andromeda Galaxy is more massive than the Milky Way by a margin of some 25% to 50%. This has been called into question by a 2018 study that cited a lower estimate on the mass of the Andromeda Galaxy, combined with preliminary reports on a 2019 study estimating a higher mass of the Milky Way. The Andromeda Galaxy has a diameter of about 220,000 light years, making it the largest member of the Local Group in terms of extension.

The number of stars contained in the Andromeda Galaxy is estimated at one trillion (1×1012), or roughly twice the number estimated for the Milky Way.

The Milky Way and Andromeda galaxies are expected to collide in around 4-5 billion years, merging to form a giant elliptical galaxy or a large lenticular galaxy. With an apparent magnitude of 3.4, the Andromeda Galaxy is among the brightest of the Messier objects, making it visible to the naked eye from Earth on moonless nights, even when viewed from areas with moderate light pollution.

ccd: Moravian G3-16200 with EFW + OAG

filters: Optolong LRGB and Astrodon 5-nm Ha/O3

telescope: TEC 140 f/7

mount: 10Micron GM2000 QCI

guider: Lodestar X2

exposure: L 18x20min + RGB 9x12min (all 1x1)

location: Les Granges, 900 m (Hautes Alpes, France)

software: TheSkyX Pro, CCD Commander, Pixinsight, PS CS5

date: 12 Feb - 30 Mar 2019

(Traitement HOO)

Camera Asi 071MC filtre dual-band

Camera Asi 183MM (Bin2) filtre OIII 3nm

Apo RedCat 51 f4.9

Guidage chercheur SW et Asi 174

Monture EM-200 Temma-2Z

48x600 sec (HOO)

60x600 sec (OIII)

9h expo

51 DOF

Echelle de Bortle: 6-7

Horsehead Nebula (IC 434) via a SharpStar 76mm EDPH APO refractor, L-eXtreme Filter in a Bortle 8 Zone

This image, a second test of the L-Extreme filter, was captured on a small, portable, SharpStar 76mm EDPH APO telescope with an Optolong L-eXtreme dual band HA/OIII filter. The mount was an iOptron CEM25P guided by an ASI120mm Mini camera on a ZWO 30mm/fl 120mm guide scope. The camera was an ASI294MC Pro. Exposures were 13x300s at unity gain of 120 with the camera cooled to -10 C. Parking lot lights were very near me. I wanted to see just how much of the light the L-eXtreme filter would ignore. I'm very impressed with this filter. No darks or other calibration frames were taken. All work for imaging, polar alignment, plate solving, guiding, etc. was done on an ASIAIR Plus box. Processing was done in Pixinsight with final touchup in Corel Paintshop Pro. Earlier I had taken over twice as many images with the William Optics Z61 APO at another very bright location. I wanted to take a second image with the new SharpStar 76 APO at a little bit darker location.

March 18th 2021

Williams Optics Redcat 51

ZWO183mc pro

Optolong l-extreme filter

ZWO air pro

Sky-Watcher HEQ5 Pro

4X300 and 4x600 x 300s lights. Flats , darks and bias.

Gain 122 at -10C

Processed in APP and Pixinsight

M65, M66 and NGC3628. An LRGB stacked image from 3 hours of L and 1 hour each of RGB. Scope used was a WO FLT110, camera was the QHY163M with Optolong filters. Captured via SGP and PHD2, post-processed in PixInsight.

NGC 3628's tidal tail is just visible.

Observed from Prachinburi, Thailand.

3.5 hours integration time (unguided)

William Optics RedCat 51

Optolong L-eNhance

Canon EOS R (astro-modified)

iOptron SkyGuider Pro

Updated on 14.08.2022

NGC 7822 & SH 2-170

190x90s (4h 45min integration time)

William Optics RedCat 51

Optolong L-eNhance

Canon EOS R (astro-modified)

ASI120MM Mini Guide Camera with ZWO Mini Guide Scope

ASIAIR Plus

iOptron SkyGuider Pro

Roughly 10 hours total integration taken from the driveway at home under Bortle 5/6 sky but also under 50-75% moon over 4 nights, dual narrowband filter working its magic for sure

Difficult target to shoot for us in Australia with it being so low in the sky

40x300" lights

M45 also known as the Pleiades or the Seven Sisters from last night. M45 is an open star cluster and lies about 400 light years away located in the constellation of Taurus. The cluster contains 500 stars over a sphere that is 14 light years wide. The cluster is moving at a different radial velocity from the nebulosity suggesting the stars are crossing the path of dust in a molecular cloud. The stars in the Pleiades cluster formed in the last 100 million years and contains a number of hot, blue, extremely luminous B-type stars and is one of the nearest star clusters to Earth.

October 31st 01:49 AM

Edinburgh Bortle 8 zone

Celestron RASA 8"

ZWO 183mc pro

Optolong lpro filter

ZWO air pro

ZWO EAF

Sky-Watcher HEQ5 Pro

86 * 30s lights inc flats, darks and bias

Gain 122 at -10C

Photographed from my backyard observatory in Fremont MI using the new QHY16200 Mono CCD.

Total Integration time 6.6 hours

This majestic Spiral Galaxy M106 lies at a distance of approximately 22-25 million Light Years from Earth in the Constellation Canes Venatici, it is believed to be an Active Galaxy generated by matter that is swallowed up by it's central and massive black hole. Shown here bottom right hand corner of image is possible companion to M106, Spiral Galaxy NGC 4217 lying at a distance of approximately 60 million light years and just above center is Spiral Galaxy NGC 4248 estimated at a distance of 25 million light years.

There are many distant and faint galaxies speckled in the background of this image therefore I decided to invert the image to give you a better view.

Full size resolution of inverted image

nova.astrometry.net/image/2601723

Tech Details

Location: DownUnderObservatory, Fremont, MI

Captured over 3 nights in July 2016

Size: 4540x3630 pixels

Total integration Time 6.6 hours

LRGB 400 min, 10 x 10 min each 1x1

Filters by Optolong

QHY16200A monochrome CCD cooled to -20C

QHYOAG-M Off Axis Guider

Astro-Tech AT12RC

Paramount GT-1100S German Equatorial Mount

Image Acquisition Maxim DL

Pre Processing Pixinsight

Post Processing Photoshop CS6

Iris Nebula or NGC 7023.

Optolong CLS-CCD filter, Baader MPCC M3. ASI294MC Pro at -20C. 52 x 2 minute exposures (1 hour 44 minutes) at Gain 121, Offset 30 , 20 dark frames, 15 flat fields, 30 dark flat frames.

Processed in APP, Topaz de-noise and Photoshop. 28th November 2020.

Dodging clouds.

——— STRUMENTAZIONE ———

Telescopio: Skywatcher evostar ed80

Camera: Zwo Asi 294 mc Zwo Asi 294 mm

Montatura: Skywatcher AZ-EQ5

Autoguida: 60mm UltraGuide Artesky con zwo asi 224mc

Correttore 0.85x ed80 skywatcher

Filtri Optolong L-pro H-alfa

Software d'acquisizione Sgpro

————— FOTO ————

temp 0 con dark, flat e darkflat

ha 97 x 300s

rgb 73 x 300s

—— ELABORAZIONE ——

Pixinsight

Photoshop

March and January 2023

Celestron RASA 8"

ZWO183mc pro

ZWO EAF

Optolong l-Pro

ZWO air pro

Sky-Watcher HEQ5 Pro

28 X120 and 42x180s Lights Flats , Darks and Bias.

Gain 122 at -10C

Processed in Pixinsight and Photoshop

Cygnus Loop including the eastern veil nebula, western veil nebula C33, C34 and Pickering's triangle.

This is an image of the remnants of a super nova explosion in the constellation of Cygnus. It is 2500 light years away and is roughly 1700 light years across.

Tools:: ZWO ASI294MC Pro camera, Optolong L-eNhance filter

Sigma 150-600mm F/5-6.3 lens @ 200mm F/5.6

Imaged from the red zone, Bortle 6

30 subs @ 300 seconds, 20 darks , 20 Flats

150 minutes total exposure

Test image of the Lagoon Nebula (M8) with the first light of my new ZWO ASI1600MM Pro camera and broad-band filters.

This image combines:

- 39 x 120s H-alpha (Baader 3.5nm ultra-narrow filter), in red. Darks and flats included.

- 40 x 15s OPTOLONG L-Pro filter, in green. No flat or darks.

- 56 x 6s ZWO B filter, in blue, no flat or dark.

H-alpha data taken on 21st Aug 2020, L-Pro and B data taken on 23rd Aug 2020, from my backyard at home, 15 km North from Sydney's city center.

Telescope: Skywatcher Black Diamond 80, f=600mm (f/7.5)

Equipment: I used the ZWO ASIAir to control the camera, the mount (Skywatcher AZ-EQ6) and the guiding system (ASI120MM + Orion 50mm finderscope). ZWO filter drawer for changing filter.

Processing: Data processed with Siril software. FITS converted on TIFF using NASA's Fits Liberator considering a logarithmic function. Color / saturation / levels / contrast / smart sharpen with Photoshop.

Credit: Ángel R. López-Sánchez (AAO-MQ).