Horsehead NGC 7479 Horsehead

(Click on image for Full Resolution)

Date: September 27, 2005
Exposure: LRGB: 210:120:150:120
21 x 600s L, 8 x 900s R, 10 x 900s G, 8 x 900s B
Processing: CCDAutoPilot2 in control for all images - CCDSoftV5 for image acquisition. MaxIm for image calibration,(5 each RGB flats, bias subtracted and median combined, 60 bias frames median combined, 20-900s darks Sigma Reject combined), alignment, normalization, stretch, and RGB combine. 2 iterations of CCDSharp on the Luminance layer. Photoshop CS for RGB processing,final adjustment and jpg conversion.
Conditions: Good, clear with nice transparency and lower humidity (60-70%) Mag 4-5 Skies
Scope: RCOS 16" Truss @ f/6
Camera: ST-10XME/CFW-8A -10°
Comments: A very nice barred spiral galaxy, with a central bar. The blue knots indicate regions of new-forming stars in its arms. The knots are blue because there is a predominance of very hot, young stars in them. It is located in Pegasus, and is approx. 105 million light years away.