Celestial hemisphere:  Northern  ·  Constellation: Andromeda (And)  ·  Contains:  NGC 891
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NGC 891 - f10 Meade 8" SCT, Tom Gray
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NGC 891 - f10 Meade 8" SCT

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NGC 891 - f10 Meade 8" SCT, Tom Gray
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NGC 891 - f10 Meade 8" SCT

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Description

Imaging at f10 is always challenging, and especially on nights of poor seeing. I was limited to 120s exposures, and even then my 'homemade' ST4 auto-guiding only managed 0.8" RMS. Although not as sharp as I hoped for, there is a little detail in the dust lane of this magnificent edge on spiral. I preferred the framing at f3.3 in my 8" SCT but my processing was too aggressive. 

Taken towards the end of the night, I only managed an hour of data before the clouds rolled in. This represents 70% best frames aligned, calibrated and stacked in ASTAP and post-processed in Startools 1.8.516 alpha. I ignored my gut instinct to image at f3 on a night of less than good seeing, and this image serves as a reminder to me to listen in future.

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