Horsehead IC 5146
The Cocoon Nebula

(Click on image for Full Resolution)

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

Date: November 10, 2003
Exposure: RGB: 270:270:195 : 18 x 900s R,G, & 13 x 900s B
Processing: CCDSoftV5 for image acquisition, MaxIm for Image calibration, alignment, and normalization. 16 flats Sigma Reject combined, 40 bias frames median combined, 20 1800s darks median combined. Photoshop for final balance and jpg conversion.
Conditions: Average, Mag 3-4 Skies
Scope: AP 155 EDF, f/7 (1.671 arcsec/pixel)
Camera: SBIG ST-8E/CFW-8, -25°C
Comments: Seems like more images are spanning multiple nights. This one was done over 2 nights, each night producing a set of RGB images. I started as the Cocoon crossed the meridian and shot the blue first, green second and red third.