M31 The Andromeda Galaxy

https://flic.kr/p/2qmBPdK


It’s Andromeda season! My latest attempt at m31, with a nearly 15-year-old SBIG ST-8300M camera. I’m amazed at how this camera is still ticking along, but I think it may be time for an upgrade soon. lol!

I have a post that shows the internals and disassembly of this camera and filter wheel here:
https://www.astroturtle.com/2025/12/sbig-st-8300m/

  • Taken from a Bortle 5 suburban back yard.
  • Takahashi FSQ-106EDX4 at f/3.6 with the 0.73x CR Reducer.
  • SBIG ST-8300M at 1×1 binning, with the FW5-8300 5 position filter wheel.
  • IDAS LPS-D3 36mm unmounted filter for luminance and Astronomik Deep-Sky 36mm unmounted RGB filters.
  • Losmady G11 Gemini 2, guided with a piggybacked AstroTech 65EDQ and an Orion StarShoot autoguider.
  • Software included PHD2 for guiding, Sequence Generator Pro for acquisition and PixInsight for image processing.
  • 66 x 600s luminance integrations (IDAS LPS-D3)
  • 30 x 600s red channel integrations
  • 30 x 600s green channel integrations
  • 30 x 600s blue channel integrations

26 hours total exposure time

IC434 Horsehead and Flame Nebulas in Hydrogen Alpha

https://flic.kr/p/PdHqC1


I revisited an old favorite for my first quick test with my new Takahashi FSQ-106EDX4.

23 x 600 second integrations, Baader Hydrogen-Alpha filter, FSQ-106EDX4 @ f/5, SBIG ST-8300 with FW5 filter wheel, processed with PixInsight.

I have a post that shows the internals and disassembly of this camera and filter wheel here:
https://www.astroturtle.com/2025/12/sbig-st-8300m/

Rosette Nebula with Narrowband filters

https://flic.kr/p/DTmNgM


My first shot of the Rosette Nebula with my new set of Baader narrowband filters.

The image was combined using SII (ionized sulphur) for the red channel, Ha (hydrogen alpha) for the green channel and OIII (ionized oxygen) for the blue channel. This combination is known as the “Hubble Palette” and is the same method used by NASA for the famous Pillars of Creation image.

I have a post that shows the internals and disassembly of this camera and filter wheel here:
https://www.astroturtle.com/2025/12/sbig-st-8300m/

The exposure breakdown is:

Ha 25 x 10 min
OIII 34 X 10 min
SII 33 x 10 min

For a total exposure time of about 15 hours.

AstroTech AT65EDQ telescope, Losmandy G11 mount, SBIG ST-8300M camera + FW5 filter wheel, Baader Narrowband filter set.

The Horsehead and Flame Nebulas in Orion

https://flic.kr/p/zsJjjE


I got a second amazing night for imaging and despite it being a Tuesday I couldn’t resist having a go at some RGB data and eating the lack of sleep. I combined the RGB images with the hydrogen alpha data I collected on Saturday to get this image.

SBIG ST-8300m camera, AstroTech AT65EDQ 65mm f/6.5 refractor, Astronomik 1.25″ RGB and Ha filters, Orion Nautilus 7×1.25″ motorized filter wheel, Losmandy G11 Gemini-2 mount.

I have a post that shows the internals and disassembly of this camera and filter wheel here:
https://www.astroturtle.com/2025/12/sbig-st-8300m/

30 x 5 minute Hydrogen Alpha sub-frames for luminance
20 x 5 minute sub-frames for each red, green, and blue filter
30 averaged darks
30 averaged bias frames

Total of 7.5 hours of exposure time.