B33 - The Horsehead Nebula in Ha

Dark nebula in Orion, with reflection nebula NGC 2023



Optics Celestron 80ED @ f/7.5, guided with an 8" LX200 Classic @ f/5.9
Mount LX200
Camera Starlight Xpress SXV-M7
Filter Astronomik 13nm Ha, IDAS LPR light pollution filter
Exposure 360 min Ha - 12 min subs,  over two nights
Processing Acquired in AstroArt3, Deconvolution, DDP. , final work in Photoshop7
Date 02.07.06-02.08.06
Location Elk Grove, CA
Notes The moon was 75% full, and appears to have affected the image, even with the Ha filter, as it was unusually noisy.  In addition, the guiding performance was particularly poor, resulting in oval stars and a soft image.  The stars were fixed with processing.  Bad flexure was also apparent, with a shift of over 50 pixels from the 1st to the last image in a night.