here is my latest observation of M31. I'll post a mini tutorial in the october target post later. This night there was a lot of moisture in the air. It limited my nelm to 4.8. The skyglow was disturbing my observation at x16 a lot. So I decided to draw at x20. I also tried to enhance the contrast with the Baader Contrast Booster. M32 appeared starlike while M110 was a dificult target to see. The observation took me about an hour. I first concentrated on observing bright areas in the galaxy. Then I reversed my approach and looked for dark features. It resulted in the sketch below. If the sky had been darker, I might have been able to capture the fainter extends of the galaxy.
Date : October 7, 2007
Time : 21.00UT
Scope : Skywatcher 102/500
Meade SP 26mm
Power : x20
Filter : Baader Contrast Booster
Seeing : 3.5/5
Transp. : 3/5
Nelm : 4.8
Sketch Orientation : N up, W right.
Digital sketch made with PhotoPaint, based on a raw pencil sketch.