NGC 7822 is a large emission nebula in the constellation of Cepheus that has some resemblance to a question mark. This image however does not show the circular dot part of it, which is located far below this.

This is 3 hours of frames (386 x 30sec for 3 hours and 13 minutes total integration) from a bortle 6 location, shot on a Seestar S30 Pro.

I'm very pleased with how it came out! It looks a little like a face from this angle.

NGC 869–884, the Double Cluster in Perseus: this image represents 11 hours of RGB integration using a Takahashi 106/530 f/5 wide-field refractor and a ZWO ASI2600 MM Pro camera. It consists of 133 exposures—comprising 39x300s (Red filter), 47x300s (Green filter), and 47x300s (Blue filter)—processed with PixInsight and Photoshop. All data and images were acquired via Telescope Live.

Telescope: Skywatcher dob 8 1200/200 f/6.

Mount: homemade EQ platform

Total exposure time: 1 hour 35 minutes (230x25s subs, ISO 2500 + 40 darks, 30 flats, 30 biases.)

Camera: unmodified Nikon D800

Bortle 5

07.10.2026

Around the stars, you can see not 4, as usual with Newtonians, but 8 diffraction spikes. The reason is that the EP provides a little more than an hour of tracking, and after that you need to reset it, and the field of view rotates a bit. With every hour of exposure you will be add 4 spikes to the final image)

Stacked frames in Siril, background extraction and denoise in Graxpert, photometric CC and stretch in Siril (stretch by Veralux automatic stretch script).

Acquisition details
Target: Sh2-157 (Lobster Claw Nebula), Cassiopeia
Location: Fort Mill, SC, USA (Bortle 6)
Dates: October 2026, 4 nights

Equipment
Telescope: Askar 103APO (700mm, f/6.8)
Camera: ZWO ASI2600MM Pro
Mount: ZWO AM3N
Filters: Antlia 3nm Ha / OIll / SIl, Antlia V-Pro R / G / B
Filter wheel: ZWO EFW
Focuser: ZWO EAF
Guiding: SVBony guide scope + ZWO ASI220MM Mini Control: ZWO ASlair Plus

Integration
Ha: 45 × 500s (6.3 h)
OIII: 53 × 500s (7.4 h)
SII: 60 × 500s (8.3 h)
RGB (stars): 15 × 120s each (1.5 h)
Total: 23.4 hours
Gain 100, cooled to - 10°C
Calibration: 500s: 25, 120s: 25 darks, Ha: 50, OIll: 50, SIl:
50, R: 50, G: 50 B: 50 flats, 50 bias

Processing (PixInsight 1.9.5)
WBPP (PSF Signal Weight, Local Normalization, cosmetic correction)
GradientCorrection, BlurXTerminator
GHS stretch with highlight protection on the bright core StarXTerminator, NoiseXTerminator
NarrowbandNormalization (SHO palette)
Curves, masked core dimming, DarkStructureEnhance, LocalHistogramEqualization, SCNR
RGB stars: SPCC, BlurTerminator, GHS, StarTerminator, black-point clip, screen-blended back in

In 2024 i took my first photo of a DSO - Pleiades.

It inspired me to pursue this hobby.

Now in 2026 i acquired a mount - the MSM Nomad.

So it was about time to shoot it again,this time with 2 years of experience behind me.

I was only able to acquire about 1hr and 40 minutes of data,due to the cloudy weather, but even then the result is still pretty good.

OM System OM-1 & Tair 11-a 135mm f2.8 mounted on MSM Nomad.

100 x 60s. Stacked in APP, Processed in Siril and Lightroom.

Bortle 4.

Telescope: Skywatcher dob 8 1200/200 f/6.

Mount: homemade EQ platform

Total exposure time: 32 minutes (146x13s subs, ISO 2500 + biases.)

Camera: unmodified Nikon D800

Bortle 5

19.09.2026

Back then I didn't shoot the planned number of frames because there were heavy dew and I had to stop a session. Some of the shoots got ruined and I was upset and forgot to do darks and flats:). Also there were some problems with tracking, that I've partly solved now. Stacked frames in Siril, background extraction and denoise in Graxpert, photometric CC and stretch in Siril (stretch by Veralux automatic stretch script).

I wasn’t sure exactly what I’d capture in just a few hours the other night, since the Butterfly Nebula seems to be a bit less popular target than the Crescent Nebula in the famous Sadr Region. The Butterfly is situated right by the star Sadr itself (the biggest star in this image!), and I have to say I’m impressed.

Check out the full photo at: https://app.astrobin.com/i/f2z2ot

Subs: 28 x 300s

Total integration time: 2h 20m

Equipment:

• Telescope: William Optics Pleiades 111
• Main camera: ZWO ASI2600MC Pro
• Mount: ZWO AM5N
• Filters: Optolong L-Ultimate 2"
• Accessories: ZWO EAF Pro, ZWO 5x2 EFW
• Guidescope: William Optics Guide Star 61
• Guide camera: ZWO ASI220MM Mini

Processing:

• Pleiades Astrophoto PixInsight
  • RC Astro BlurXTerminator
  • RC Astro NoiseXTerminator
  • RC Astro StarXTerminator
• Adobe Photoshop 2026

See also: The study as it was published in the Astrophysical Journal Letters

Dear astronomy enthusiasts,

Today, October 14, 2026, at 20:58 (GMT+2), I spotted a bright object near Polaris in a long-exposure photograph taken from Duisburg, Germany. It appeared only briefly and then suddenly vanished. Does anyone have any idea what it might have been?

At the top, you can see a few satellites and airplanes, as well as a couple of shooting stars.

I used Slow Shutter for iOS on a iPhone 13 PRO MAX

Taken with a Seestar S50 in a Bortle 4-5 area. After edits in Siril, this is 515x10sec of stacking

Shot on IPhone 16 + through my Celestron StarSense Explorer DX 130 AZ in the pro camera app

1100 subs, 60s each, Dwarf 3, Duo-Band Filter, shot in Lugano, Switzerland. Processing through Dwarflab's Megastacking function, post processing in Apple Photos.

Chandra observations suggest the “Treble Clef” radio structure was created by a supermassive black hole outburst and later reshaped by a collision between galaxy clusters.