NGC7331 was challenging to shoot from Sunnyvale, Silicon Valley. ISO1600 5x5min. 20x3min. ISO3200 30x2min., totaling about 2 and half hours exposure and corresponding dark frames. The third day, 12/1/2011, was quite windy, having distorted the star shapes. The equipment was same as before.
2011-12-1 4:19 
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