Simcoe Skies Astronomy

M56 - Globular Cluster

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M56
M56 Globular Cluster
Sept. 2 was a shootfest!

Date: Sept 2/04
Exposures: 6 best of 46
Exposure length: 20 seconds
Amp on setting: ON
Brightness: 90
Gain: 40
Notes: First try at processing this AVI (using a LCD display). Amp glow is evident due to poor dark subtraction routine (average background level for the imaging session was set too low because Moon was at 84% - no filter used).

M56 again
Same AVI restacked/reprocessed
More frames, contrast enhanced version

Date: Sept 2/04
Exposures: 16 best of 46
Exposure length: 20 seconds
Amp on setting: ON
Brightness: 90
Gain: 40
Notes: Reprocessed on a CRT display. Histogram adjusted to eliminate amp glow. Probably too much adjustment - contrast is too high. Next imaging attempt needs a higher background level so the dark frame can be properly subtracted.

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	M56 Globular Cluster Sept. 2 was a shootfest! Date: Sept 2/04 Exposures: 6 best of 46 Exposure length: 20 seconds Amp on setting: ON Brightness: 90 Gain: 40 Notes: First try at processing this AVI (using a LCD display). Amp glow is evident due to poor dark subtraction routine (average background level for the imaging session was set too low because Moon was at 84% - no filter used).

	Same AVI restacked/reprocessed More frames, contrast enhanced version Date: Sept 2/04 Exposures: 16 best of 46 Exposure length: 20 seconds Amp on setting: ON Brightness: 90 Gain: 40 Notes: Reprocessed on a CRT display. Histogram adjusted to eliminate amp glow. Probably too much adjustment - contrast is too high. Next imaging attempt needs a higher background level so the dark frame can be properly subtracted.