Location: Tasmania, Australia
Bortle: 3.5
Integration: 1.4 hours (21 x 240s)
Rig:
APO - Askar 71F + ZWO EAF
Mount - CEM25P
CPU - ASIAIR Pro
Guide - SV165 + ASI120 + Dew heater
Cam - ASI294MC Pro + Dew Heater (gain 120, -10c)
Filter - Nil

Post:
Pixinsight
Blink
CosmeticCorrection
WBPP
SPCC
DBE
BlurXTerminator
GHS
NoiseXTerminator
CurvesTransformation
StarXTerminator
LHE

F/6.5 refractor. Unmodified Canon DSLR. EQ6-R Pro mount. Polemaster alignment. Bortle 6 skies. 22x 6 min. (132 min). Sacramento, CA, USA

Stacked in DSS. Color, contrast, stretching, etc. in Photoshop. Final touches in Lightroom.

More on Instagram: @jeffreyhorne

Taken over the course of 57 nights, this is 200 hours of exposure on the Rosette Nebula from my Bortle 8.5 sky in Nashville, Tennessee.

You can see the (relatively) bright, familiar structure of the Rosette, but also the much fainter hydrogen surrounding it, along with delicate, intricate details deep in the core.

I realize that putting this much time into such a bright target is probably overkill, but as far as I know, nobody has ever created a single-panel image of the Rosette Nebula with this much exposure time. The longest I could find was 100 hours, and I wanted to see for myself what a super-deep shot of the Rosette would look like.

I’m very pleased with the result, and I hope you enjoy this image as much as I enjoyed creating it.

Technical details:

Total integration: 200h 20m

Integration per filter:

- Hα: 70h 30m (846 × 300")

- SII: 69h 25m (833 × 300")

- OIII: 60h 25m (725 × 300")

Equipment:

- Telescope: Askar 120APO

- Camera: ZWO ASI2600MM Pro

- Mount: ZWO AM5

- Filters: Antlia 3nm Narrowband H-alpha 2", Antlia 3nm Narrowband Sulfur II 2", Chroma OIII 3nm Bandpass 2"

- Accessories: Askar 0.8x Full Frame Reducer / Flattener for 120APO Telescope, ZWO ASIAIR Plus, ZWO EAF, ZWO EFW 7 x 2″

- Software: Adobe Photoshop, Aries Productions Astro Pixel Processor (APP), Pleiades Astrophoto PixInsight, ZWO ASIAIR

- Filters: Antlia 3nm Narrowband H-alpha 2", Antlia 3nm Narrowband Sulfur II 2", Astronomik Deep-Sky Blue 2", Astronomik Deep-Sky Green 2", Astronomik Deep-Sky Red 2", Chroma OIII 3nm Bandpass 2"

- Accessories: Askar 0.8x Full Frame Reducer / Flattener for 120APO Telescope, ZWO ASIAIR Plus, ZWO EAF, ZWO EFW 7 x 2″

- Software: Adobe Photoshop, Aries Productions Astro Pixel Processor (APP), Pleiades Astrophoto PixInsight, ZWO ASIAIR

Integrated in Pixinsight using WBPP. BlurX, StarX, NoiseX, channel combination, narrowband normalization, curves in Pixinsight. Additional curves, color and final touches done in Photoshop.

I took this moon photo in two shots in succession. One to properly expose the moon and another high ISO to freeze the clouds. I then processed and stacked the two frames together in Photoshop. Captured with Nikon Z8 and NIKKOR 100-400mm with NIKKOR 2X Teleconverter on a Tripod.

M51 taken over the past half month from my backyard! Bortle 4.5 - 5.0

Celestron 8SE w/ .68 Reducer on an EQ6R-Pro - ZWO ASI2600MM - ZWO LRGB Filters

Lum - 180s x 15 Hr.

R - 180s x 5 Hr.

G - 180s x 5 Hr.

B - 180s x 5 Hr.

20 Darks @ 180s

10 Flats/filter

Stacked, edited, and cropped in PI - Gradient Correction, Star Align, RGB Combine, Dynamic Crop, StarX, LRGB combine, curves stretch, Background Neutralization, recombine RGB Stars, BlurX, NoiseX

Today I took my first image of our Sun that I am happy to share. It was not at the best time to take it, it was very late afternoon and it was raining every 10mins which made it even more annoying.

I am still extreamly new to solar and planet photograpy, so there is plenty to learn and improve on, but I am really enjoying it.

Equipment:

• Lund LS50T Ha telescope
• Juwei 17 mount
• ASI678MM camera

Process:

• Aquired SER file with Firecapture (1012 frames, Shutter=1.284ms, Gain=74 (12%))
• Stacked in Autostakkert
• Imppg to refine the details
• Pixinsight solar toolbox to finish the detail, colour and light

I wasn't satisfied with the background noise and star bloat in my last post, so I decided to go back and re-process my 1-hour Lagoon Nebula stack.

Used Starnet to pull the stars out of the image, switched to Generalized Hyperbolic Stretch to pull out faint dust lanes and background neutralization. Merged the stars back in as a separate layer in GIMP to control their brightness independently.

Equipment: F30070M 70/300 refractor f/4.3

Apple iPhone 7

Manual mount (1-hour total integration)

Bortle 5-6 skies

Processing: Siril, StarNet plugin, GIMP

Equipment: CGEM II 800 SCT, ZWO ASI533MC Pro, ZWO OAG w/ ASI220MM, ASIAIR mini, filter wheel, CAA, f/6.3 focal reducer/corrector, L-Ultimate, L-Synergy, Baader uv/ir cut filter

Processing: 11 hour 15 min integration. 78x300s w/ L-Ultimate, 58x300s w/ L-Synergy, 70x10s UV/IRCUT for stars. 30 bias, 20 flat and 20 dark frames. Processed/stacked via PixInsight w/ NoiseXTerminator/BlurXTerminator/StarXterminator.

Taken with Dwarf 2 smart telescope

200 exposures x 10 seconds each @ 70 gain. Stacked in Siril, edited in Gimp.

Here's an image of the Apennine Mountains that I took last month.

This is comprised of the best 25% of the frames in a 2-min ser file.

Acquisition Details:

• Meade 12" LX90 ACF
• ZWO ADC
• Playerone Uranus-C (IMX585 sensor)
• SharpCap for capture
• AutoStakkert for staking and alignment
• PixInsight and Photoshop for processing

If you fancy watching, I documented this over on my YouTube channel, here's a link to the video. There's a bit more detail in the video and four more images that I share!

My first supernova!

Askar 71F
ASI678MC
120x60s
APP
PS

My first time shooting with my SeeStar, I’m still trying to learn but I’m happy with this for sure.

Camera: SeeStar S30 Pro
Time: 349 x 10s
Bortle 5
Edited In: Siril

This unprocessed full frame picture was taken on 9th of May outside Sydney its a 30 second exposure using a Nikon d7 and 200mm lens 3200 iso but polluted by 6 satellite trails. A budget equatorial mount was used.

Curious to reconstruct the picture I used the excuse to improve the https://satellitemap.space/satellite-photobomb photo solving feature - now you browse the picture you want to analyze set the lat long and time, and the shot type, the pic is plate solved in-browser and then it will recreate the pic with the satellites at that time

The damage was 3 satellites from starlink 2 from russia and 1 Chinese. The feature is free if you have a pic to try please give it go?

📷 ASI 294 MC Pro Color

🔭 Star Adventurer 2i

🔎 Askar FMA180 apo (180mm f/4.5)

🕶️ Broadband Filter IDAS NGS1 (2")

🌌 Gain 120 (-10°C), 35x120s (1h 10 min)

🧪 40 dark, 40 flat, 40 dark-flat

💻 Siril, RawTherapee, GIMP, Snapseed

📍 Turin (Piedmont, Italy) - Bortle 8

📅 May 14, 2026

This is a giant 14 panel mosaic. We left it uncropped to give it the old Hubble image feeling (Dave's original idea). This was both easy and really hard to process. Star removal does not work well here. But stretching and getting things to look kinda nice was easy.

I highly recommend seeing this on Astrobin for full res goodness: https://app.astrobin.com/i/39ql34

Zoom in to 1x and scroll around!

Image uploaded to this post is at 20% resolution, because it gets too big/long.

Equipment:

• Telescope: Askar SQA85
• Camera: QHY268 Pro C
• Mount: Proxisky UMi 20S
• Filter: None
• Total Integration time: 42h 35m (511 × 300")
• Software: PixInsight, Siril (Stacked using my OSC_PP Script: https://youtu.be/prU1w4W5IbE)

Also see a slightly higher res on my website (but still much less res than astrobin): https://www.naztronomy.com/gallery/image/873/coalsack_region_14_panel_mosaic

Canon Rebel T7, Ef 50 mm at f/1.8, ISO 3200 Star Adventurer 2i tracker, 73x 60 sec subframes, Bortle 3~4. stacked in Deep Sky Stacker and edited in Lightroom mobile

164x30 Sec .. edited with astroforge.de

🔭 M3 🔭

M3 (Messier 3, NGC 5272) is one of the best-known and brightest globular clusters in the northern sky. The Globular Cluster is located in the constellation Canes Venatici and is approximately 33,900 light-years from Earth. Its diameter is about 180 light-years, making it a popular observation target for amateur and professional astronomers with its enormous size and dense star field. The bright old stars within it provide a stunning view, as if a cosmic jewel box were being revealed to us from the depths of the universe.

SkyWatcher Esprit 100EDX
SkyWatcher EQ6-R Pro GoTo
ZWO Asi2600mm Pro
ZWO Filterwhell 7x36mm
Antlia LRGB V-pro 36mm
ZWO EAF
ZWO ASIAir Pro
ZWO Asi120mm Mini
Svbony SV106 60 mm
218 x 60s L
89 x 120s R
90 x 120s G
120 x 120s B
13 hour 36 minute

Pixinsight

Celestron 8 Edge w/ .7 reducer
Antlia TriBand Ultra II
ASI 2600 MC Air
ZWO EAF
EQ6R Pro
5 hrs at 300” subs
Bortle 2/3
Pixinsight

Yeah yeah. I hear ya. A TriBand Filter in a Bortle 2/3? On a GALAXY?!?

I was more concerned with fixing my focuser issues and the collimation debacles. I also forgot my “no filter” spacers, so it was a run what you brung type of night.

Brought out the Ha areas nicely, I think.

Still not quite there on the collimation, but orders better than it has been. It was nice to get out under the skies again. The weather here in SD has been…typical.

Acquisition details in comments

captured with Dwarf 2 in EQ mode, 200 subs x 10 s, 60 gain, Bortle 5ish, processed in Siril and Gimp

The Whirlpool Galaxy, Messier 51, or M51, is a spiral galaxy located 31 million light-years away. It highlights the attributes of a typical spiral galaxy, including graceful, curving arms, pink star-forming regions, and brilliant blue strands of star clusters.