With a first quarter moon around last night, the only way to take advantage of a clear night was to image in H alpha (unless you do a Scott and wake up (shudder) at some ungodly hour in the am
)
Details:
Camera: Canon 300D (modified)
Filter: Astronomik 13 nm H Alpha
Mount: CG5-autoguided
Exposure: 12 x 10 minute subs-two hours total
ISO :1600
Processing: Deep Sky Stacker/Photoshop
in the end found I couldn't eliminate the noise without losing more detail so the image is probably a bit noiser than I would have liked it to be-the penalty for shooting with a non-cooled DSLR at high gain I suppose.
The other penalty for shooting with a DSLR is of course only 1 in every 4 pixels is actually usable data-since I discard the blue and green channels as noise.
Still you can only do what you can with the gear you've got I suppose, though any suggestions to improve processing or reduce noise would be muchly appreciated
larger version available at:
http://www.flickr.com/photo_zoom.gne...4260671&size=o
thanks for looking and any comments and suggestions most welcome
narayan