This is the Sculptor Pinwheel Galaxy, also known as NGC 300. It’s a galaxy in the constellation of Sculptor, roughly 6 million lightyears away. It’s a little smaller than the Milky Way.

• Telescope: Skywatcher Classic 250P 10" Dobsonian 1200 FL
• Tracking: Home built 2 circle segment equatorial platform
• Camera: ZWO ASI533MM Pro, CMOS monochrome 3008x3008 3.76μm pixels, 200 gain
• Integration: 150x10s luminance, 30x10s red, 30x10s green, 30x10s blue
• Calibration: 60x10s darks
• Image capture: OpenLiveStacker on Android phone.
• Stacking: Siril
• Post-processing: Gimp
• Skies: Quarter moon, in an area that otherwise has Bortle 4 skies (Mt Stromlo)

This is the comet C/2023 A3 Tsuchinshan ATLAS. It became unexpectedly bright as it got closer to the Sun. This image was taken after it emerged from the other side of the Sun.

• Telescope: Skywatcher Classic 250P 10" Dobsonian 1200 FL
• Tracking: Home built 2 circle segment equatorial platform
• Camera: ZWO ASI533MM Pro, CMOS monochrome 3008x3008 3.76μm pixels, 100 gain
• Image capture: ASIImg
• Stacking: Siril
• Post-processing: Gimp
• Skies: Bortle 5 skies (Wanniassa)

This is Saturn.

• Telescope: Skywatcher Classic 250P 10" Dobsonian 1200 FL
• Tracking: Home built 2 circle segment equatorial platform
• Camera: ZWO ASI533MM Pro, CMOS monochrome 3008x3008 3.76μm pixels
• Integration: 3000x1ms exposures in each of red, green and blue
• Image capture: ASICap
• Stacking: AutoStakkert!
• Post-processing: Gimp

This is Barnard’s Galaxy, also known as NGC 6822. It’s the closest non satellite galaxy to the Milky Way, very similar to the Large Magellanic Cloud.

I accidentally had the gain set to 600 (max), so it came out very noisy.

• Telescope: Skywatcher Classic 250P 10" Dobsonian 1200 FL
• Tracking: Home built 2 circle segment equatorial platform
• Camera: ZWO ASI533MM Pro, CMOS monochrome 3008x3008 3.76μm pixels, 600 gain
• Image capture: OpenLiveStacker on Android phone.
• Stacking: Siril
• Post-processing: Gimp
• Skies: Bortle 4 skies (Mt Stromlo)

This is the Trifid Nebula, also known as M20 and NGC 6514. It’s an H II region, plus a reflection nebula and a dark nebula. It’s roughly 21 lightyears across, and is about 4100 lightyears away.

• Telescope: Skywatcher Classic 250P 10" Dobsonian 1200 FL
• Tracking: Home built 2 circle segment equatorial platform
• Camera: ZWO ASI533MM Pro, CMOS monochrome 3008x3008 3.76μm pixels, 200 gain
• Image capture: OpenLiveStacker on Android phone.
• Stacking: Siril
• Post-processing: Gimp
• Skies: Bortle 4 skies (Mt Stromlo)