The star Sirius is a beacon in the dark night. It looks like a mother of pearl that Poseidon himself was in charge of cultivating and polishing to light the way for the intrepid sailors who cross the expanse of its seas.

Sirius is the brightest star in the sky visible from Earth, reaching a magnitude of -1.09. Located in the constellation of Canis Major, Alpha Canis Majoris (one of its official names), it is 8.60 light years away from us and forms an amazing double system, where its companion is very difficult to observe, since it is a white dwarf of magnitude 8.44. In this modest image, Sirius is accompanied to the left by the beautiful open cluster Messier 41 (M 41), with a small red star at its center. Below to the left of Sirius, three red-toned stars stand out. These are the beautiful Nu 1, Nu 2 and Nu 3 Canis Majoris.

Around you, you can see a sea of stars and there is a lot to say about them. I'll just say that when I was a kid, I used to ask my mom how many stars there were. While we looked at the dark sky of country nights, with great grace and mischief he answered me "sin cuenta" which, in Spanish, means that it is not possible to count and is pronounced the same as "cincuenta", which in English is fifty. So I, with a lot of effort and taking care not to get lost and count the same star twice, began the task of counting the fifty stars in that immense sky. At my young age, I knew that if I could get past that number, I would be ready to refute my mother's argument. In the end, I was contemplating her beautiful face her, barely illuminated by that immense starry sky.

------------------------------------------------------------------------------------------

I captured this photo with my old Nikon 75-150 lens, from the 1980s, at 100mm and my Nikon D5600 camera. 8.40 minute integration, Iso 1000. Processed with DeepSkyStacker, Siril and Gimp.

Rural area, Concordia, Entre Ríos, Argentina. 30-03-2023, 23:09 hs.

My first SHO (Hubble palette) image if done! Unfortunately a few subs are blurred cause of focusdrift.

/// Setup

- Camera: Moravian G2-8300

- Telescope: Omegon 126/880 f/7 Triplet Apo

- Corrector: TS 2.5" Fullframe Corrector

- Mount: Losmandy G11 on Pier

- Guiding Camera: MGen

- Guiding Scope: TS Photoline 80/500 f/6.25 Triplet Apo

/// Software

- Capturing Software: Sequence Generator Pro

- Processing Software: DeepSkyStacker / Fitswork / PixInsight 1.8

/// Image Integration

- Date: 18.10.17

- 3x1200" H-Alpha / bin 1x1 / -30°C

- 3x1200" O3 / bin 1x1 / -30°C

- 3x1200" S2 / bin 1x1 / -30°C

(1h per channel)

Canon EOS 450D prime focus Skywatcher 150 Newtonian. single light frame (15s ISO1600); 12 darks; 20 flats; 20 bias. Processed in DeepSkyStacker, PixInsight and Photoshop CS6.

Equipment : Canon 600D camera + 50 mm f/1.8 lens + standard tripod

Exif : f/2.8, 12 x 8 seconds (stacking method), ISO 3200

My mount is not with me at the moment - sent away for an MOT :( So I find myself faffing.

Having used bad pixel mapping for the first time on my one sub image, I thought I'd play with a noisy rgb one from my 500D, and I picked this because I've only reprocessed it 235 times ;)

The noise levels were certainly reduced, and the result looks generally cleaner than the last one. Whether that's down to BPM or just a different process I don't know. As I can never remember how I processed my images anyway, who can say? :)

Gruppo Astrofili di Piacenza

www.astrofilipc.it

M42

Composit of different long exposures.

Takahashi APO 130

Nikon D300

Webcam Meade autoguiding

Processing with DeepSkyStacker, PSCS4

Here is a combined view of the Cigar Galaxy (M82) and Bode’s Galaxy (M81) taken during imaging session in February 2017.

Tech Specs: Bode’s Galaxy (on the right) composed of 53 x 60 second images, Cigar Galaxy (on the left) composed of 28 x 60 second exposures. All at ISO 3,200 with 5 x 60 second darks and 5 x 1/4000 second bias frames (captured using BackyardEOS software) using a Meade LX90 12” telescope and Canon 6D camera mounted on a Celestron CGEM-DX mount. Guided using an ASI290MC mounted on a Canon 400mm f/5.6 lens using PHD2 software. Imaging was done on February 20 and 26, 2017 from Weatherly, Pennsylvania. Manually aligned.

The Double Cluster in Perseus is a set of two open star clusters, h Persei and chi Persei. They lie close to Cassiopeia, which is easily recognizable by its distinctive M or W shape. Once you find Cassiopeia, scan between it and Perseus with your naked eyes or binoculars and you'll notice a glowing blob of light which is these groups of stars.

These clusters are approximately 7,500 light-years away. Each cluster contains several hundred stars, including young, hot supergiants that are thousands of times more bright than our Sun.

The Double Cluster is resides within the Perseus arm of the Milky Way galaxy, while our solar system is located in the Orion arm. Observing the Double Cluster means looking through our local spiral arm and into the next arm outward from the galactic center, which is just super cool!

Equipment:

SkyWatcher EQ6-R

Nikkor 500mm f/4 P AI-S at f/5.6

Sony a7rIII (unmodified)

ZWO 30mm Guide Scope

GPCAM2 Mono Camera

Acquisition:

Taos, NM: my front yard - Bortle 3

85 x 75-second exposures for 1 hour, 46 min, and 14 sec exposure time.

5 dark frames

15 flats frames

15 bias frames

Guided

Software:

SharpCap

PHD2

DeepSkyStacker

PixInsight

Photoshop

Lightroom

My a7rIII and adapted Canon FD 300mm f/4 L lens were mounted to my SkyWatcher EQ6-R mount using a vixen rail. The guidescope/camera were fixed to the front of the rail. I used SharpCap to achieve "excellent" polar alignment. I shot ISO 800 at f/5.6. I took 151" exposures using PHD2 with my guidescope to keep tracking accurately. I brought the lights/darks/flats/bias frames into PixInsight for stacking and aligning and then used: STF, Cropping, Dynamic Background Extraction, BlurXTerminator, plate solving, color correction, NoiseXTerminator, and then the galaxy was separated from the stars using StarXterminator, and both files processed and stretched separately and then recombined using PixelMath. That file was brought into Lightroom for Metadata and EXIF tags, light post-processing, and cropping. I used Photoshop to sharpen the final image.

Taken with a TMB92L, Hutech-modified Canon T3i DSLR, Orion SSAG autoguider and 50mm guidescope, and Celestron AVX mount. Consists of 25 300-second light frames and 19 300-second dark frames, all at ISO 800, as well as 35 flat and 50 bias frames. Captured with BackyardEOS, stacked in DeepSkyStacker, and processed in Photoshop.

Comet Leonard is the astronomical event of the year, discovered in January 2021 is located at 35 million kilometers from our planet. As an example, the moon is at 384.400 km.

In its elliptical path with our Sun, it is estimated that it visits us every 40.000 years and to observe it you have to get up early, at 4am. It is not visible to the naked eye, but it can be seen with binoculars at its closest to the earth, which is estimated for December 12.

The photos are taken with an equatorial tracking mount, similar to those found in observatories, to increase the exposure time and prevent stars from looking like traces. Different shots of 30s, 50s and 60s are shot with different ISOs which are then stacked to bring out the tail and details.

El cometa Leonard es el evento astronómico del año, descubierto en enero de 2021 se encuentra a 35 millones de kilómetros de nuestro planeta. Como ejemplo, la luna se encuentra a 384.400 km.

En su trayectoria elíptica con nuestro Sol, se calcula que nos visita cada 40.000 años y para observarlo hay que madrugar, levantase a las 4am. No es visible a simple vista, pero si se apreciara con unos prismáticos en su máximo acercamiento a la tierra, que se estima para el 12 de diciembre.

Las fotos están obtenidas con una montura de seguimiento ecuatorial, similar a las que tienen los observatorios, para aumentar el tiempo de exposición y evitar que las estrellas se vean como trazos. Se lanzan diferentes tomas de 30s, 50s y 60s con diferentes ISO que luego se apilan para resaltar la estela y los detalles.

Date: 12/07/2021

Location: Culla - Castellón (40°18'58.9"N,0°09'39.4"W,828m)

Tracker: Sky-Watcher AZ-GTi

Guiding with QHY 5L-II Mono and guidescope EZG-60

Camera Sony ILC3-A7M3 APS-C Mode

Lens Sony FE 200-600mm F5.6-6.3 G OSS

3 lights at 900mm, ISO 3200, 25seg, f6.3

11 lights at 900mm, ISO 3200, 35seg, f6.3

11 lights at 900mm, ISO 3200, 50seg, f6.3

7 lights at 900mm, ISO 6400, 30seg, f6.3

1 lights at 900mm, ISO 6400, 60seg, f6.3

15 Darks at ISO 3200 and 6400 with the exposure time of the lights.

Total time of exposition 21min. 21seg.

©2021 All rights reserved. MSB.photography

Thank all for your visit and awards.

Among the astrophotographs I made, this is, at the moment, the one with the longest total exposure time, totaling 19 hours and 35 minutes (captured in four nights).

"The beautiful spiral galaxy Messier 83 is located in the constellation Hydra and is also known as NGC 5236 and as the Southern Pinwheel galaxy. Its distance is about 15 million light-years, being about twice as small as the Milky Way". Source: eso.org

Sky-Watcher 203mm F/5 EQ5 reflector with Onstep and electronic focuser ZWO EAF, Canon T6 (primary focus) modified, Optolong L-eNhance filter (in part of the frames). 50mm guidescope with ASI 290MC. 235 light frames (116x300 "ISO 800 + L-eNhance: 119x300" ISO 1600), 40 dark frames, 64 flat frames. Processing: DeepSkyStacker and PixInsight.

@LopesCosmos

www.instagram.com/lopescosmos

telescopius.com/profile/lopescosmos

The bright emission part of the nebula is surrounded by dark dust, which you can see partially lit around the edges.

15 x 3-minute, manually off-axis guided exposures at f/4 and ISO 1600. Using more exposures helps reduce digital noise, so I also included 10 x 5-minute exposures taken in 2013.

Modified EOS 600D & Revelation 12" Newtonian reflector telescope.

Registered and stacked using DeepSkyStacker; curves adjusted in Canon Photo Professional; noise reduction via CyberLink PhotoDirector.

Same framing and process as a week ago, but this time I shot 20 x 30 second subs from some better Bortle 3 skies, and NEOWISE was about 15 degrees above the horizon, which made a big difference - the background sky gradient was less severe, the green color of the nucleus is showing and there are more stars (and spiral galaxy NGC 3198, 6.5 arc min long with a visual mag. of 10.3 is just visible in the upper lefthand corner).

Acquisition details: Fujifilm X-T10, Samyang 135mm f/2.0 ED UMC @ f2.0, ISO 1600, 20 x 30 sec, tracking with iOptron SkyTracker Pro, stacking with DeepSkyStacker, editing with Astro Pixel Processor and GIMP, taken July 20, 2020 from Bortle 3 skies at 11:00 pm Pacific (the beginning of astronomic dark).

bit.ly/12yalof

NGC 281 the Pac Man nebula

Emission nebula in the constellation of Cassiopeia

RGB data captured on October 29 and 31, 2011

H-Alpha data captured on November 1 and November 2, 2011

Ocala, FL

RGB data: Combination of 60 sec, 120 sec and 180 sec. exposure stacked in DSS for a total of 4 hour 7 min with 10 minute

H-Alpha data: 10 minute exposure stacked in DeepSkyStacker for a total of 2 hours and 10 min.

PhotoShop CS5

Orion 80mm EON

Orion 50mm guide scope with SSAG

Canon T1i (modified)

Losmandy G11 with Gemini II

Hutech IDAS Light Pollution Suppression (LPS) Filter

Astronomic 6nm H-Alpha clip filter for Canon EOS

Additional data adding detail to the inner nebula was accomplished using an Astro-Tech 8 inch Ritchey-Chretien telescope (Ha data) and Explore Scientific 127mm CF APO (RGB)

Imaging camera: QSI 683wsg-8

Ha data 3 hours

RGB data 40 min each Red, Green and Blue channel binned 2x2

Messier 31: The Andromeda Galaxy

96 x 5 minutes, ISO 800

30 darks, 200 bias

Equipment: Canon 450D (Full Spectrum Mod/), Orion 8" f/3.9 Astrograph

Calibration and Post-Processing in DeepSkyStacker and Pixinsight

Here is a short H-alpha test with almost full moon.

/// Setup

- Camera: Moravian G2-8300

- Telescope: Omegon 126/880 f/7 Triplet Apo

- Corrector: TS 2.5" Fullframe Corrector

- Mount: Losmandy G11 on Pier

- Guiding Camera: ALccd5-II

- Guiding Scope: TS Photoline 80/500 f/6.25 Triplet Apo

/// Software

- Capturing Software: Sequence Generator Pro / PHD2

- Processing Software: DeepSkyStacker / PixInsight 1.8

/// Image Integration

- Date: 06.08.17

- 3x900" H-alpha / bin 1x1 / -10°C

This is a planetary nebula around 2,600 light years away.

Planetary nebula is formed after a star very much like our own Sun burns through all it's fuel. The star swells up in size and then rapidly shrinks right down to become a white dwarf. As it shrinks, it's gaseous outer layers are left to just simply drift outwards continually expanding. This particular one is approximately 2 light years across.

It gets it's name the Owl Nebula from the two dark patches that kind of look like big beady eyes.

Boring techie bit.

Skywatcher quattro 8" S & f4 aplanatic coma corrector

EQ6 R pro mount guided with an Altair 50mm & Altair GPcam

Canon 450D astro modded with Astronomik CLS CCD EOS APS-C clip filter. Neewer Intervalometer used to control the exposures.

60 - 2 minute exposures with the best 70% stacked in DeepSkyStacker with calibration frames.

All other processing done with StarTools.

Perhaps, she thought calmly, whatever moves the alethiometer's needle is making the Aurora glow too. It might even be Dust itself. She thought that without noticing that she'd thought it, and she soon forgot it, and only remembered it much later.

— Philip Pullman, The Golden Compass

Here is a 48-minute stacked image taken during our live stream event last evening of Comet C/2022 E3 ZTF during its closest approach to Earth. Tycho software (Daniel Parrott) estimated the movement at 16.7" per minute.

Tech Specs: Sky-Watcher Esprit 120ED Telescope, ZWO AS2600mc-Pro running at -10C, Celestron CGEM-DX mount, ZWO EAF, ZWO ASIAir Pro, 48 x 60 seconds. Processed using DeepSkyStacker and PixInsight. Image Date: February 1, 2023. Location: The Dark Side Observatory (W59), Weatherly, PA, USA (Bortle Class 4).

This is a planetary nebula around 2,600 light years away.

Planetary nebula is formed after a star very much like our own Sun burns through all it's fuel. The star swells up in size and then rapidly shrinks right down to become a white dwarf. As it shrinks, it's gaseous outer layers are left to just simply drift outwards continually expanding. This particular one is approximately 2 light years across.

It gets it's name the Owl Nebula from the two dark patches that kind of look like big beady eyes.

Skywatcher Quattro 8" Newtonian Reflector steel tube with the f4 aplanatic coma corrector, Skywatcher EQ6 R pro mount, Altair Starwave 50mm guide scope, ZWO asi120mm guide camera mini, ZWO asi533mc pro cooled to -10c, ZWO asiair plus.

300 seconds at 0 gain.

Stacked with DeepSkyStacker and processed in StarTools.

Telescope: William Optics ZenithStar 81 Refractor

Mount: Losmandy GM811G

Imaging Camera: ZWO ASI 2600MC Pro

Filter: Optolong L-eXtreme Dual-band Filter

Site: Elk Grove, California, USA

Calibration Files: None

Guiding: None

Integration Time: 6h 24m

Bortle Zone: Class 6

Processing:

DeepSkyStacker:

- stacked 90% of frames

- enabled 2x drizzle to get double the resulting size from default

- aligned RGB final imaged

- saved 32bit image

Photoshop:

- reduced size to 67%

- reduced 32bit to 16-bit

- level/curve adjustment to stretch image

- hue/saturation to change color

- Camera Raw Filter to tweak Exposure, Contrast, Details (mainly for noise reduction)

Using a 500mm lens, piggybacked on my telescope and a guidescope with PHD2, I shot about 30 minutes worth of data and combined it with darks/lights/flats to make this image of the double star cluster near the constellation Perseus.

Rho Ophiuchi,

The Rho Ophiuchi cloud complex is a dark nebula of gas and dust that is one of the closest star-forming regions to the Solar System at 460 light years.

Seen here it reaches above the Milky Way core. The bright "star" is Jupiter.

Shot from South Australia.

source: Wikipedia

Canon 6D

Canon ef-50mm f1.8@f2.8

10s

54 exposures ( 9 minutes total ) stacked in Deep Sky Stacker and processed in PS6

Andromeda Galaxy, M31

Mount: Skywatcher EQ6 Pro

Scope: William Optics Fluorite Doublet 80/555

Camera: Nikon Z6

Seeing conditions: 60% ..from by home in Rome

Unguided exposures:

- ISO800 x 40'' x 60 exposures

- Darks x 15

Stacked with DeepSkyStacker

Total of 4h exposure of the Heart Nebula taken with my modified EOS60D.

Mount: Skywatcher NEQ6

Lens: Canon 300mm f2.8 L

Camera: Canon 60D (Astro modified)

Sub Frames: 70 x 210s (ISO 1600)

Stacked with Deepskystacker, Edited with Photoshop

The latest out of the Canon EOS Ra. I couldn't resist capturing this region for the 65th time using my new full-frame sensor!

The EOS Ra, RedCat, and Triad Ultra are a match made in heaven for subjects like this.

Why I Bought a Canon EOS Ra: astrobackyard.com/is-canon-eos-ra-worth-it/

The image includes 67 x 5 minutes (5 Hours, 35 Minutes) at ISO 3200.

The noise performance of this sensor is absolutely incredible, a massive improvement over the 60Da.

Sky-Watcher HEQ5 Pro

William Optics RedCat 51

Canon EOS Ra

Radian Triad Ultra (2")

DeepSkyStacker

Adobe Photoshop 2020

Messier 65 (also known as NGC 3623) is an intermediate spiral galaxy about 35 million light-years away in the constellation Leo, within its highly equatorial southern half. It was discovered by Charles Messier in 1780. With M66 and NGC 3628, it forms the Leo Triplet, a small close group of galaxies (Wikipedia).

Observation data (J2000 epoch)

Constellation: Leo

Right ascension: 11h 18m 55.9s

Declination: +13° 05′ 32″

Distance: 41–42 Mly

Apparent magnitude (V): 9.3

Tech Specs: Orion 8" f/8 Ritchey-Chretien Astrograph Telescope, Celestron CGEM-DX pier mounted, ASI071MC-Pro, ZWO AAPlus, ZWO EAF, 52 x 60 seconds at -10C, processed using DeepSkyStacker and PixInsight. Image Date: March 20, 2023. Location: The Dark Side Observatory (W95), Weatherly, PA, USA (Bortle Class 4).

This is an open star cluster in the constellation of Auriga. Sometimes called the Salt & Pepper cluster.

It was first discovered in the early 1650's by Giovanni Battista Hodierna. Later to be independently discovered by Charles Messier in 1764.

The cluster lies 4,511 light years away from us and is estimated to be between 350 and 550 million years old. Quite a few red giants can be seen within the 500+ stars that make up the cluster.

The best time to observe M37 or NGC 2099 as its listed in the New General Catalogue is the months of December, January and february.

Boring techie bit.

Skywatcher quattro 8" S & f4 aplanatic coma corrector

EQ6 R pro mount guided with an Altair 50mm & Altair GPcam

Canon 450D astro modded with Astronomik CLS CCD EOS APS-C clip filter. Neewer Intervalometer used to control the exposures.

70 - 80 second exposures with the best 75% stacked in DeepSkyStacker with calibration frames.

All other processing done with StarTools

edit: wow, this just keeps blowin' up on tumblr. cool.

ngc1977 - running man nebula.

all data collected with lightbuckets.com 12" R-C telescope (LB-0003) in rodeo, new mexico.

L(R:G:B) = 48m(20m:20m:20m)

Luminance: 6x8min, stacking with deepskystacker. masked stretch in pixinsight 1.5, then 5 more stretches which were HDR fused in enfuse. next, cleanup of geosynchronous satellites in photoshop. finally, dark structure enhancement, atrous wavelet sharpening and noise reduction in pixinsight 1.5.

RGB: 5x4min per channel. masked stretch in pixinsight 1.5, then 8 stretches fused with enfuse. then histogram peak normalization and curves in pixinsight 1.5 again. cleanup of satellites in photoshop. slight sharpening with atrous wavelets, and noise reduction in pixinsight 1.5.

Luminance+RGB merge with pixinsight 1.5. cleanup of CCD artifacts in photoshop.

minor tweaks in lightroom 2.0

comments: i got all the way to the end of this and realized that i wish i had sharpened the luminance channel a whole lot more. also i've probably stretched the RGB data a bit too much for the exposure lengths.

these geosynchronous satellites are really killing me.

Tracker: Vixen Polarie Star Tracker

Exposure time: 20 mins (20 frames x 60s)

Gear: Nikon D810A + Sigma 35mm F1.4 Art + STC Astro-Multispectral clip filter.

Camera Setting: iso1600, 60s, F2.8 & 35mm.

Software: DeepSkyStacker 4.1.1 & Photoshop CC

Location: Home Observatory, Miri City

Studio105.no - A Photography Blog for the LoLs - © Jon Schioldborg Baglo or my Instagram

Andromeda Galaxy (NGC 224/ Messier 31) + NGC 221/ Messier 32

Equipment:

SkyWatcher Black Diamond 1000/200 f/5 newtonian telescope

SkyWatcher HEQ5-Pro German Equatorial SynScan GoTo Mount

Nikon D90 (5.4µ size pixels), unmodified

Baader RCC I Rowe "Coma Corrector" & "Field Flattener"

Info:

Original capture date: 2011.10.02

Magnification: 23x (~1150mm)

Pixel scale:1.10 arcsec/pixel (Original resolution)

Pixel scale:4.32 arcsec/pixel (Published resolution)

Field size :78.58 x 52.19 arcminutes

Exposure, Light Frames: 28x60s iso800 (28 minutes)

Exposure, Dark Frames: 200x60s iso800 (3 hours, 20 minutes)

Exposure, Flat Frames: 100

Exposure, offset Frames: 100

Polar-Alignment: Fair

Auto-guiding: None

Temperature: 5C

Elevation: >1000 meters

Software:

DeepSkyStacker, Iris, Photoshop CS5, Lightroom 3

Messier 102 (M102), also known as the Spindle Galaxy, is an edge-on lenticular galaxy located in the northern constellation Draco. The Spindle Galaxy lies at a distance of 50 million light years from Earth and has an apparent magnitude of 10.7. It has the designation NGC 5866 in the New General Catalogue.

Tech Specs: Orion 8" f/8 Ritchey-Chretien Astrograph Telescope, Celestron CGEM-DX pier mounted, ASI071MC-Pro, ZWO AAPlus, ZWO EAF, 108 x 60 seconds at -10C, processed using DeepSkyStacker and PixInsight. Image Date: March 16, 2023. Location: The Dark Side Observatory (W95), Weatherly, PA, USA (Bortle Class 4).

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Acquisition details: Fujifilm X-T10, Samyang 135mm f/2.0 ED UMC @ f2.0, ISO 1600, 25 x 60 sec, tracking with iOptron SkyTracker Pro, stacking with DeepSkyStacker, editing with Astro Pixel Processor and GIMP, taken just before astronomic dawn on Mar. 22, 2020 from Bortle 2 skies.

At my latitude, this region of the sky only gets about 17 degrees above the horizon - every time I've shot it I've had thin clouds and haze to deal with. This time was no different - I wasn't able to use most subs because of thin cloud cover.

So, that's finally my last capture before I get my DSLR modified for astrophotography.

Of course, my ideia is to shot an emission nebula hard to capture with a stock camera.

If everything ends right, soon I'll post a version of this same target, with some quite similar exposure, but with an astromoded Canon T6i.

Wish me luck!

Well... what a hard target for a Bortle 6 skies and a stock DSLR. Almost 3 hours of exposure and I hardly got some nebulosity. I hope it will change soon, as soon my camera come back and my Optolong L-Pro arrive.

Messier 95 (also known as M95 or NGC 3351) is a barred spiral galaxy located in the constellation Leo, about 38 million light-years away it has a magnitude of 11.4 (one of the dimmer Messier objects)..

Tech Specs: This image is composed of 36 x 60 second images at ISO 3,200 with 5 x 60 second darks and 5 x 1/4000 second bias frames using a using a Meade LX90 12” telescope and Canon 6D camera mounted on a Celestron CGEM-DX mount (ASI290MC and Canon 400mm lens for guiding). Imaging was done on March 23, 2017 from Weatherly, Pennsylvania.

Three reddish emission nebulae are also visible in the photograph: Eagle Nebula (M16), Omega Nebula (M17), and Lagoon Nebula (M8). At the bottom of the image you can see the "Teapot".

Taken on August 16, 2020 in a rural/suburban transition area (Bortle 4). Fuji X-E2, 18mm f2.8 13sec ISO3200. Eighteen frames were stacked in DeepSkyStacker. Editing in RawTherapee.

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This diffuse emission nebula also designated SH2-86 in the Sharpless catalogue is the home of the young open star cluster NGC 6823, visible in the centre of the image.

The nebula is estimated to be just under 6,000 light years from us and can be found in the constellation Vulpecula.

Data gathered at www.astronomycentre.org.uk

Boring techie bit:

Skywatcher Quattro 8" Newtonian Reflector steel tube with the f4 aplanatic coma corrector, Skywatcher EQ6 R pro mount, Altair Starwave 50mm guide scope, ZWO asi120mm guide camera mini, ZWO asi533mc pro cooled to -20c gain 101, Optolong L'enhance 2" filter, ZWO filter drawer, ZWO asiair plus.

120s exposures.

Best 80% of 57 light frames.

Darks, Flats & Bias.

Stacked with DeepSkyStacker and processed in PixInsight & Affinity Photo.

Here is a view of the Whale and the Pup Galaxies (NGC 4631 and NGC 4627) found in the constellation Coma Berenices. This galaxy is roughly 22 million light years away from Earth.

Tech Specs: Orion 8" f/8 Ritchey-Chretien Astrograph Telescope, Celestron CGEM-DX pier mounted, ASI071MC-Pro, ZWO AAPlus, ZWO EAF, 57 x 60 seconds at -10C, processed using DeepSkyStacker and PixInsight. Image Date: March 16, 2023. Location: The Dark Side Observatory (W95), Weatherly, PA, USA (Bortle Class 4).

13 x 4-minute exposures (taken 7 Mar 2021) and 9 x 5-minute exposures (taken 30 March 2016). All exposures manually-guided, ISO 1600, f/4. Modified EOS 600D & Revelation 12" Newtonian reflector telescope.

Frames registered and stacked in DeepSkyStacker software; curves adjusted in Canon Photo Professional; noise reduction in CyberLink PhotoDirector.

Taken using Skywatcher Evostar 80ED Pro (.85x reducer), Celestron Nexstar SLT Mount & Nikon D3300. ISO 1600,20x30s lights, ~100 flats and bias. Stacked in DeepSkyStacker and post processed in Photoshop & Pixinsight.

This is a re-process of some very old acquisition data that I had using some new post-processing tools from Russel Croman. His NoiseXTerminator & BlurXterminator tools are extremely helpful in reducing noisy images and bringing out further details.

NGC 2438 is a planetary nebula found inside the open cluster M46 in the constellation Puppis. I remember the first time I imaged M46 and spotted this fuzzy planetary nebula, I thought I discovered something new! My star atlas, at the time, did not show this NGC object. This planetary nebula is actually not part of the open cluster, it just appears in the same line of sight. It’s estimated distance is 3,000 light years away and has a magnitude of 10.8.

Tech Specs: This image is composed of 40 x 15 second images at ISO 5,000 with 5 x 15 second darks and 5 x 1/4000 second bias frames using a Meade LX90 12” telescope and Canon 6D camera mounted on a Celestron CGEM-DX mount. Imaging was done on February 18, 2017 from Weatherly, Pennsylvania.

Here is a view of the Milky Way and its core.

Taken with a Canon 600D (unmodified) equipped with a 18-55 mm kit lens and mounted on a meade lxd75 mount.

Where I am disapointed on this picture, is that we clearly see 2 totally differents parts :

At the top, the sky is natural (black) in contrast to the bottom where the center of our galaxy is hidden behind light pollution of nearby cities...

But I can not do anything except offsetting this in software

Technical Datas :

Canon 600D (unmodified filter) + 18-55 mm kit lens + meade lxd75 mount

18 mm

1 x 5 min + 1 x 3 min

f/4.5

ISO 800

Here is a 50-minute stacked image of Comet C/2022 E3 ZTF.

Tech Specs: Sky-Watcher Esprit 120ED Telescope, ZWO AS2600mc-Pro running at -10C, Celestron CGEM-DX mount, ZWO EAF, ZWO ASIAir Pro, 50 x 60 seconds. Processed using DeepSkyStacker and PixInsight. Image Date: February 4, 2023. Location: The Dark Side Observatory (W59), Weatherly, PA, USA (Bortle Class 4).

I've re-stacked a set of previous exposures from 2014 with some recent frames to further reduce noise.

24 x 1-minute unguided exposures at ISO 3200 (taken 8 September 2019); 11 x 3-minute manually, off-axis guided exposures at ISO 1600 (taken September 2014).

Modified EOS 600D & Revelation 12" Newtonian reflector telescope.

Registered and stacked using DeepSkyStacker; curves adjusted in Canon Photo Professional; noise reduction via CyberLink PhotoDirector.

Finally got a couple of clear nights :-)

This object is far to the south, and I only have a short time to image it between obstructions, hence the short exposures and high ISO.

12 x 1-minute exposures at ISO 3200, f/4. Modified EOS 600D & Revelation 12" Newtonian reflector telescope.

Registered and stacked using DeepSkyStacker; initial curves adjusted in Canon Photo Professional; final curves & colour-balance adjusted using Paint Shop Pro; noise reduction via CyberLink PhotoDirector.

Another from the last few nights, and also including some earlier frames to help further reduce noise.

25 x 1-minute unguided exposures at ISO 6400 (taken 4 & 5 July 2019) and 9 x 5-minute manually off-axis guided exposures at ISO 1600 (taken in July 2013).

Astro-modified EOS 600D & Revelation 12" f/4 Newtonian reflector telescope.

Registered and stacked using DeepSkyStacker; curves adjusted in Canon Photo Professional; noise reduction via CyberLink PhotoDirector.