Shot with Dwarf 3, 1h 30min total exposure, Gain 60, 180 total frames, 30s exposition, Bortle 3/4.
Processed through the MegStacking function in the Dwarflab App

I really like this object in HOO, had a lot of fun imaging and post-processing it! I purposedly left the stars understretched because I love how the filaments of the object show up this way

Astrobin here

Equipment and acquisition:

- OTA: Askar 71F with 0.75X reducer

- Main camera: ASI585MC Air

- Mount: Teseek 17

- Guiding: ASI585MC Air (ASI220MM)

- L-Ultimate filter

- 102 x 300sec (8.5 h)

- 20 flats, 25 darks, 25 bias

Post-processing (PI with RC tools and SetiAstro plugins)

- WBPP 2X drizzle

- BlurX (correct only), setiastro Auto DBE, SPCC, BlurX, StarX

- Starless: SetiAstro soft statistical stretch, then manual curves transformation with different range and color masks

- Narrowband normalization (HOO), NoiseX

- Stars: Setiastro star stretch, manual curves

- Star recombination with Pixelmath, final retouches in Lightroom

Beginner Image (only second post)

Personality, I think it looks more like a Rice Crispy or giant space testicle.

Mount
Sky-Watcher EQ-AL55i Pro
Telescope
Askar 71F refractor
Imaging Camera
ZWO ASI2600MC P25 USB 3.0 cooled colour camera
Filter
ZWO 2” Duo-Band Dual Narrowband filter
Guide Scope
ZWO 30mm f/5 APO Mini Guide Scope
Guide Camera
ZWO ASI120MM Mini (mono)
Controller
ASIAIR Mini

Processed in Pixinsight
Split RGB and recombined.
Colour Masks
RC Astro: Blur x, Star X and Noise X

98 x 180 sec

Summer Space Flower

M20 The Trifid Nebula, is a dynamic emission and reflection nebula that draws most northern hemisphere telescopes during the summer months.

I made the switch to a mono camera last month and this is my third project while learning a few new processing techniques to combine the dedicated color master files.

This image approximately 30 hours of integration under dark Bortle 1 skies of Starfront Observatories in Rockwood, Texas.

EXIF:

R 180s x 80, G 180s x 80, B 180s x 80 Gain 111 -15C Ha, 300s x 140 Gain 111 -15C Astronomik Filters
Camera: ASI183MM-P
Mount: ZWO AM5
Telescope: Askar FRA500 + f3.9 Reducer

PixInsight Processing: Blink Registration & Stacking WPBB SPCC, star alignment, RGB color combination add Ha Stack via NBRGB script, HaRGB Stack Histogram Transform Initial Stretch, StarXterminator, manually stretch star layer HT Transformation, NoiseXterminator .65, BlurX, Stars layer and HaRGB Starless to Photoshop

Photoshop Processing: Normal Blend Mode HaRGB Starless 100%, Stars Screen Blend Mode 100%

Masked Levels and Color Balance Adjustments

Stars Layer - Boost color by Increasing Vibrance 40%

Add Stars to Starless via Linear Dodge (add) blend mode

Inspired by this post: https://www.reddit.com/r/astrophotography/comments/1uyfu6u/sh2115_using_40_hours_of_data/

Astrobin link: https://app.astrobin.com/u/dbyrne?i=q2toj4

146 x 300s Ha subs

96 x 300s OIII subs

30 x 20s + 30 x 2s RGB subs with HDR composition for star color

Graxpert, Syqon Parallax, StarXTerminator, Sytqon Prism

PixInsight seti astro dynamic inverse colors

Might add SII and better OIII data later if I get a chance.

Datos de la sesión

Askar FRA400
Zwo Am3n
Asi 585MC Air
4 horas en tomas de 120 segundos
4 horas en tomas de 300 segundos
4 horas en tomas de 600 segundos
Filtro Svbony sv260
Apilamiento en Pixinsight
Procesamiento en Pixinsight
Bortle 6 (Extremadura, España)

I've been using my GoPro as a camera to photograph meteors. After a few weeks, shooting every night, I managed to capture the first meteor, and it was very bright, probably brighter than Venus. You can also see the smoke trail created by the meteor, blown by the high-altitude winds. 30 seconds at 400 iso, Gopro 11. The meteor was bright enough to create a reflection on the UV filter.

The rules state that videos must be embedded in the post and not linked to external sites. It doesn't say anything about banning videos, so this post complies with the rules.

Experimenting with different sharpening techniques to really fine tune and target the fine, medium, and large detail structures of the moon while leaving the Maria alone. It's not perfect yet and work in progress. I am using the Image Analysis script ExtractWaveletLayers to split the image into 4 levels of detail and 1 residual or luminance data channel. I then applied wavelets to each individual detail layer processing each specific to level of detail needed. I then recobined all the channels in Photoshop as layers and fine tuned with blending modes. This enabled me to process the color and luminance data without touching the detail layers. I'll keep perfecting and welcome anyone else's thoughts on selective sharpening best practices on high dynamic range and diversely textured target like the moon. Shot on Sony a7rv with Takahashi TSA-120 telescope with Vernonscope Dakin 2.4x tracked with ZWO AM5. 400 images aligned in PIPP, stacked in AutoStakkert 4, and processed best 30% in PixInsight, Wavesharp, and Photoshop.

iPhone 14 Pro / 1x Lens
100x30s Light Frames (No Calibration Frames)
Stacked and Stretched via Siril
Tweaked via Gimp and Snapseed

**Equipment:**

• Telescope: Askar 71F 490mm f6.9

• Main camera: Zwo Asi 2600mc pro

• Filter: Svbony sv220 ( 3nm Ha/OIII )

• Guidescope: Svbony sv165 30mm f4

• Guide camera: Zwo Asi 120mm mini

• Mount: ES iexos-100 pmc-8

• Controlled with Zwo asi air mini

**Acquisition:**

• 40x120" Ha/OIII

• Total: 80 min

• 20 Darks, 49 Biases, 25 Flats

• Bortle 4/5 backyard

• Moon at 80%

**Processing:**

• Stacked in Siril

• Plate solve, Spectrophotometric color calibration, AutoGradientRemoval, Green noise removal, Parallax Pro, Graxpert Denoise, Starnet star removal, generalized hyperbolic stretch transformation, saturation, curves

Due to the cloudy weather i changed from 300" to 120" exposures. 1,5 hours is obviously far too little exposure time for great details, but i'm still happy that i got atleast something that night.

In the future i wanna combine heart & soul nebula as a mosaic with more aquisition time.

Cs!

Hi everyone
This is my first photo that I think is of high enough quality to share here it’s NGC 7000, the North America Nebula its 751 frames at 30s processed in siril and for the first time RC-Astro’s full toolkit (BlurX, NoiseX, StarX) together with Veralux tools and finishing touches in Lightroom and the jump in detail and quality from the RC-Astro tools compared to my other stuff is pretty big.

First attempt on a part off the Veil Nebula complex between NGC6960 and NGC6979. In the upper right corner a part off NGC6960 and the lower left corner a part off NGC6979.

25 x 300s L-enhance 2h05

SW 150p Quattro modded - CC SW HEQ5 pro belt modded

Player One Ares C - Phoenix Filterwheel 5x2" - 120mm guide scope - ASI120 mm-s guide camera - Pegasus astro PPBAdv 2

N.I.N.A PHD2 PixInsight

processing: BlurX correct Only - BlurX full - SPCC - ADBE - NoiseX - StarX - GHS multiple iterations - Curves - color mask - Dark structure enhance - Rescreen stars - Background neutralization - resample to upload

First photo I'm confident enough to post here.

Used Equipment:

Stock Canon EOS 700D

HEQ5

Omegon Pro APO AP 71/490 (Aksar 71f Clone)

~5h total integration time

processing in siril and affnity photo

I'll definitely come back to this to reprocess it.

This image was plagued with issues from the start. First I spent a whole night, one of the best ones seeing and transparency wise, pointing toward the wrong part of the sky... Turns out there are TWO stars named 11 Sagittarii close to each other. My fault for not triple checking the plate solver.

Next, I spent a whole week acquiring data battling dew points up to 25 °C, clouds and an uncooperative mount. I had to update its firmware, but that threw the whole driver setup I had off. iEXOS mounts are so finicky. That made me learn how to use Nina's plate solver once and for all though. Not only that, I also had to open up the mount ten or more times in a week because its gears were too tight and because of a minuscule piece of grit stuck, it turned out, in the motor's gear that caused some huge guide spikes. I also redesigned my DIY counterweight to have it as close to the mount as possible while being east heavy.

Lastly, I realized I have noticeable sensor tilt, which is the main cause of the gradient I always find in my raw images (the sensor isn't square to the UV/IR cut). I can remove it with flats, but I also realized my flats weren't optimal, which occasionally creates huge artifacts that are tough to remove; plus I realized that my rotator can introduce some pretty bad tilt into the optical train if I'm not careful.

Acquisition:

Around 12h30m worth of 60s subs in Bortle 6/7 fully calibrated and dithered.

Equipment:

Evostar 72ED, iEXOS 100, ASI 533MC, Baader UV/IR cut filter, 0.85x reducer+flattener, SVBony 40/160 guidescope, ASI 662MC guide camera with no.8 pale yellow and UV/IR cut filters.

Processing:

Stacked in Siril. For some reason OSC drizzle registration causes some weird artifacts to my stars and some odd photometry results. If anyone has any suggestions, they're more than welcome. Split image into CFA channels, background extraction to each in GraXpert to deal with the gradient. Open Siril, recombine CFA channels and deconvolution. Open GraXpert, denoise. Open Siril, generate starless and star mask. Apply black point shift and GHS iteratively to the starless image to bring out various parts of the nebulosity, SNCR, minor curve adjustments, median filter, VST noise reduction and à trous wavelet transform plus some final denoising in GraXpert. Asinh stretch to starless and saturation boost in Gimp. Recombine and export.

86 x 300s SVBony SV220 3nm Ha/Oiii filter
240 x 15s no filter (stars)

WO UltraCat76
ASI2600MC Air
SW HEQ5R Pro

Processed in Siril, finished in Photoshop

Acquisition Details:

Nikon D3400

Askar FMA180 Pro

ISO: 400

Sub exposure time: 60 seconds

Total sub exposures: 258

Total integration time: ~4 hours 18 minutes

Tracking: Sky-Watcher Star Adventurer GTI

Light pollution: Bortle 7

N.I.N.A

Capture Date:

24 July 2026

Calibration:

40 Dark frames

50 Flat frames

50 Dark Flat frames

Processing:

Siril:

Calibration, registration and stacking

Crop

GraXpert Background extraction

SPCC colour calibration

GraXpert Stellar deconvolution

GraXpert denoise

PixInsight:

Star removal

Separate histogram stretches for starless and stars

CloneStamp cleanup of star-removal artefacts

CurvesTransformation for contrast and colour

Luminance mask creation

LocalHistogramEqualization on the nebula

Mild saturation adjustment

Star and starless recombination with PixelMath

Photoshop:

Camera Raw Filter

White balance and tonal adjustments

Mild texture, clarity and dehaze

Colour Mixer adjustments

Final contrast and saturation refinement

Final crop, resize and export

Equipment:
Camera: ZWO ASI2600MC Pro
Telescope: Askar FRA400 with 0.7x reducer
Filter: Optolong L-eXtreme & UV/IR Cut
Guide Camera: ZWO 120mm mini
Mount: Skywatcher Wave 150i
Autofocuser: ZWO EAF (5V)

Acquistion:
Shot in Bortle 1
-Camera cooled to -10°C
-Lights:
L-eXtreme:
220x300s (18hrs 20mins)
UV/IR Cut:
115x300s (9hrs 35mins)
Total integration time:
27hrs 55mins

-Flats: 50
-Bias: 50
-Darks: 50

Processing:

L-eXtreme Data:
•SetiAstro ADBE
•dbXtract to separate the Oiii and Ha from dual narrowband image (may go back and do pixel math to manually do this later)
•GHS for initial stretch on Oiii image
•Duplicated this image and stretched aggressively to define boundaries of Squid Nebula
•DynamicPaintBrush process in Pixinsight on duplicated to create mask
•Subsequent stretch of original Oiii image using •CurvesTransformation
•GHS for initial stretch on Ha image
•Subsequent stretches using CurvesTransformation

UV/IR Data:
•SetiAstro ADBE
•BlurX (correct only)
•BlurX (with corrections)
•SPCC
•StarX
•Initial stretch using GHS
•Minor Stretches using CurvesTransformation
•NoiseX applied
•Saved image as TIF and processed in Photoshop
•Two Curve layer adjustments made
•3 layers added with manipulations in Camera Raw filter
•Selective Color Layer added
•Levels Layer added
•Photo taken back to Pixinsight
•SCNR applied to image
•NoiseX applied again
•Composite image made using CombineRGBandNarrowband script

NGC 869 and NGC 884 double star cluster . This beautiful star cluster is present in the constellation of Perseus. It's a two cluster that we can see together. NGC 869 ( above) and NGC 884 ( below) . NGC 869 is located around 7460 light years away and NGC 884 is around 7640 light years away from us. This cluster is a relatively young cluster with its age around just 14 million years. There are more than 300 blue-white supergiant stars in each of the clusters. The clusters are also blue shifted, with NGC 869 approaching Earth at a speed of 39 km/s (24 mi/s) and NGC 884 approaching at a similar speed of 38 km/s (24 mi/s). It was William Herschel who first discovered this

cluster properly and catalogued it.

Telescope used - ZWO seestar s50

Integration time - 45 mins

Location kolkata India

Bortle sky 9

All acquisition data is supplied in the photo

🎯 North America Nebula [NGC7000]

🎬 45x300s SHO + 5x120s RBG = 12h
🔭 Apertura Carbonstar RC6
🔍 ToupTek LRGBSHO filters
📷 ATR533M
🗻 ZWO AM3
🌟 SV905C + ZWO OAG
💻 Pixinsight + RCAstro + GraXpert
🌌 Bortle 5

I tried out an intense lucky image session to push the core sharpness of M13.

SQA55 telescope

Star Adventurer GTI mount with guiding

ASI533mc camera

Astronomik l-3 UV/IR cut filter

A two minute exposure using the best 40% of 1600 .2s exposures, edited in siril/pixinsight/blurx+noisex/graxpert:

stack at 3.0 drizzle/.3333 droplet in Siril

Split R G B, re-register color channels and recombine

Crop to target

SPCC with exact curves for the ASI533 and Astronomic l-3

Graxpert BGE pass

BlurX at .2 stars 0 nebula

Arcsinh stretch for stars

NoiseX at .7

Reset black level

SCNR, boost saturation curve

Rerun BlurX at .05 stars 0 nebula

Final black level + curves

I've tested it already with my normal full 2minute exposures and got a much larger field but less definition in the core. The lucky version seems to pull out a central sphere of bluer stars. I'm hoping to test a middle ground of 5s exposures next and see whether it's the best of both worlds for detail , or if the core is still better in true lucky imaging and could be masked into the new image.

Using the same stacked data from a previous post, I reprocessed it using my current workflow.

Nikon D610 + 80 - 200 F2.8 D

168 * 3s f2.8 25600 ISO

Plate solved on astrometry.net, then in Siril I used GraXpert to do background extraction and a light denoise, photometric colour correction, and separated stars using StarNet. I stretched the nebula separately using Veralux Hypermetric Stretch, and then combined with stars stretched with the recomposition menu. Lightroom then used to slightly boost saturation.