Horsehead NGC 6888
The Crescent Nebula

(Click on image for Full Resolution)

(Click the here for my 2001 version with my Vixen 102mm Flourite and ST-237a)

Date: August 29, 2003
Exposure: Ha (3nm) 10800 : 9 x 1200s
Processing: Captured with CCDSoftV5, MaxIm for Image calibration,(16 flats dark subtracted and Sigma Reject combined, 30 bias frames Sigma Reject combined, 16-1200s darks Sigma Reject combined), dead/hot pixel removal, alignment, normalization. Photoshop for final processing and jpg conversion.
Conditions: Average, Mag 3-4 Skies, high thin clouds, haze
Scope: AP155EDF, f/7 (1.59 arcsec/pix measured with TheSky), Vixen 102mm Flourite @ f/9 for Guiding. All equipment on a Paramount ME and can be seen here.
Camera: SBIG ST-8XE, -20°, SBIG ST-237A for Guiding
Comments: Started this one after it crossed the meridian and imaged for 3 hours. This is still not enough to get the S/N up high enough for a smooth image. Will try to add some additional images weather permitting.