Good call Tyler. I forgot about the vibration the camera can cause. As long as your still awake, care to provide an update on your ASA? I'm still green with envy after seeing your M31 shot (http://71.18.228.62/images/M31_Allred_Astro.jpg ) and can only imagine what images you take with the ASA will look like. patrick :) On 21 Dec 2008, at 23:26, Tyler Allred wrote:
Gary, Nice work on the photos. Chuck's advice was excellent and I agree with everything he said. I thought I would mention another possible culprit for the jittery stars... shutter vibration! I have taken many images through my scopes with my digital SLR bodies, and I nearly always have problems with vibration unless I use a mirror lockup function. Many cameras have a way to flip up the mirror prior to taking the exposure. That procedure prevents the "snap" that can cause the whole assembly to shake. Take a look at the camera manual to see if your camera offers this function. Happy shooting! Tyler
www.allred-astro.com