[AZ-Observing] Re: Astrophotography

Barn Door will work, also if you have a motorized mount on your scope, most can 
be fitted with an adapter to allow piggybacking on your scope using the 1/4 20 
thread hole in the base of your camera.
I personally use piggybacking on my 8" SCT. 
The practical limit is star trailing and noise from the camera. This is a 
function of the time and the magnification of the lens. With a digitial camera 
you have the ablity to stack several images to improve S/N ratio and avoid 
trailing. 

-------------- Original message from Jim Warthman : -------------- 

> I've wondered what options are available for mounting a fairly heavy digital 
> SLR camera, with a long lens, in such a way that I can track with sidereal 
> motion. Well, at least I think that's how I want it to move. ;-) 
> 
> But seriously, I know of barn door mounts, and I wondered how effective they 
> are, and what their practical limits are. Beyond that, would it make sense 
> to try and locate a used NexStar base, and adapt it to pointing a camera? 
> 
> Just curious, what have been your experiences? 
> 
> Thanks! 
> 
> -- Jim 
> 
> 
> -- 
> See message header for info on list archives or unsubscribing, and please 
> send personal replies to the author, not the list. 
> 

--
See message header for info on list archives or unsubscribing, and please 
send personal replies to the author, not the list.

Other related posts: