Digital SLRs used for astrophotography?

[Crash Nebula]

Sup guys, long time no see etc.

Last year I purchased a 6.1MP Pentax K100DSLR, and I've recently gotten a 55-200mm lens for it, which has awesome zoom capabilities. I've seen images taken of Eta Carina with a 135mm lens with the AP thrown wide open, is this possible from a DSLR? If I do max zoom and put the AP wide open and set it on a low ISO and do a bulb exposure, would that work?

Is light pollution a big problem when capturing images? Or will it just drown it out a little bit?

Furthermore, the dob's been collecting dust, needs to be used again. Is there any way of getting an adaptor to take pictures using the DSLR through the 'scope?

cheers,

Charlie

[skwinty (Steve)]

Originally Posted by Crash Nebula

Is there any way of getting an adaptor to take pictures using the DSLR through the 'scope?

Hi Charlie
You can get a nose piece to fit into the focusser and a t ring for your camera.
You may have to get a low profile focusser or move the mirror up the tube to attain focus for the camera.
If so you would then need to have a focus extender for visual use.
Check the article on modding a newtonian for dslr photography in the article section. If you search through the posts I sent for dannat you will see pix of the nose piece and others for eye piece projection.
Regards
Steve