Instrument

Celestron C11 @  F/6.1 (1705 mm)  1.087 arcsec / pixel

Mount

Losmandy G11

Camera

SBIG ST-7 with CFW-8A color wheel

Acquisition Date

8/24/05 to 8/26/05  Near downtown Seattle

Exposure

Lum   270 min  (15 X 15 min)
Red     80 min  (8 x 10, bin 2 x 2)
Green  50 min  (5 x 10, bin 2 x 2)
Blue    45 min  (3 x 15, bin 2  x 2)

Software

CCDSoft, FocusMax, CCDOPS, Sigma Clip (pre beta 11)and PhotoShop CS. The DitherMat was used to dither the Lumance layer.

Comment

North is to the left.

Taken only 3 miles from downtown Seattle with very clear skies and about a 60% full moon.  This object needs dark skies and an H-Alpha filter with 30 minute exposures for the luminance layer.

I thought I could bring out more detail on the left side, otherwise I would have positioned the camera more to the right.