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Originally Posted by Lester
How come you have less hot pixels, or hardly any in the Trifid compared to Orion? Was your processing different?
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As stated in post # 11 > "Lagoon: My first attempt the other night. At that stage my alignment allowed me 3 sec. exposures tops! 20 stacked. 1 Dark subtracted.
Orion: 2nd attempt early this morning. 19X8 sec. exposures 4 darks stacked & subtracted"