30 minute exposure with SBIG ST-7 CCD camera with minus-IR and no. 25 (red) filter.
Astro-Physics 155mm f/7.5 EDF refractor.
Dark frame: average of nine. Flat frame: average of 4.
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30 minute exposure with SBIG ST-7 CCD camera with minus-IR and no. 25 (red) filter.
Astro-Physics 155mm f/7.5 EDF refractor.
Dark frame: average of nine. Flat frame: average of 4.