Posted inAstronomy CCD Cameras & Autoguiders

A fond farewell to the SBIG ST-8300M CCD Camera

After 10 years with my SBIG ST-8300M, I have finally upgraded. Despite its quirks, halos and spikes around bright stars, bad columns, and incredibly slow download times, this camera has performed admirably well. It has taken some of my best astrophotos to date, and managing its idiosyncrasies has taught me more about image processing than I ever thought I would know. In the time I have had it, this camera has taken on dripping humid winter nights, wonky power at remote sites, suspect USB cables, being dropped, and has just kept going. So, before I move on, I wanted to take a moment to celebrate this aging, but still very capable camera with a teardown and a close look at its innards.

No Comments
Posted inAstronomy Astrophotography

M81 and M82 – Bode’s Galaxy and the Cigar Galaxy

https://flic.kr/p/2r28D9d

Another go at f/8 with the FSQ and the Extender-Q 1.6x. This setup produces strong vignetting, and as flats have become more critical, I am finding that my flat game is pretty lame. As with my previous M51 shot, the flats I took did more damage than good and completely overcorrected the image. In the end I was able to mostly fix it, but the background is still pretty splotchy. There’s something I am doing wrong with my bias/dark/flats process that I haven’t understood yet.

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 backyard.
  • Takahashi FSQ-106EDX4 at f/8 with the Extender-Q 1.6x.
  • 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.
  • 150 x 120s luminance integrations (IDAS LPS-D3)
  • 150 x 120s each red, green, and blue filters

Total exposure time of 20 hours.

No Comments
Posted inAstronomy Astrophotography

M51 The Whirlpool Galaxy

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


I pushed my FSQ to f/8 with the Extender-Q 1.6x for this one. I was my first attempt with this setup because I was having a lot of tracking issues with my G11. I was getting an average RMS of 1.5″ and peaks of 4″. Not great at f/8! After a full clean and relube, lots of fiddling, and adjustment of the worms (boy, was that part frustrating), I now have it down to an RMS of (mostly) just under 0.5″ and peaks of 1.5″….

My first try at processing this came out with a lot of noise, bad color balance, and bad background gradients because I seem to have messed up my flats. This version was a re-process with no flats, which still produced some strong gradients, but they were much easier to filter out in PixInsight. I’m pretty happy with the color and detail now, and I am really impressed with the Extender-Q and the performance of the FSQ at f/8. Next (if I ever see good weather again) I’m going to try for M81/M82 with this setup.

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 backyard.
  • Takahashi FSQ-106EDX4 at f/8 with the Extender-Q 1.6x.
  • 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.
  • 90 x 120s luminance integrations (IDAS LPS-D3)
  • 90 x 120s each red, green, and blue filters

Total exposure time of 12 hours.

No Comments
Posted inAstronomy Astrophotography

M42 The Orion Nebula

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

I’m pretty amazed how nice this one came out. I started the image really late in the season so by 9pm I would already be doing a meridian flip. Plus weather and mount issues (tracking on the west side), made this one a challenge.

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 CR Reducer 0.73x.
  • SBIG ST-8300M at 1×1 binning, with the FW5-8300 5 position filter wheel. (The halos around brighter stars are due to the camera)
  • 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.
  • 70 x 300s luminance integrations (IDAS LPS-D3)
  • 70 x 300s each red, green and blue filters

Total exposure time of just over 23 hours

No Comments
Posted inAstronomy Astrophotography

M33 Triangulum Galaxy

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


A small break in the weather finally allowed me to complete my M33. The difference from my first attempt with only 15 RGB frames [https://flic.kr/p/2qqnCQH] is really amazing.

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/5.
  • 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.
  • 70 x 600s luminance integrations (IDAS LPS-D3)
  • 45 x 600s each red, green and blue filters

Total exposure time of 34 hours.

No Comments