FlyingPete
18th of June 2005 (Sat), 20:57
Anyone done much work with their D-SLR on a Telescope?
I have had a cheap 60mm diameter Tasco for some time, quite old, the cheap mount not an equatorial and the older style .98inch eyepieces.
Anyway scored a camera adaptor and a T-Mount to Canon EF adaptor, set it all up the other day to try and capture the trasition of Jupiter behind the Moon.
Not happy at all with the results. Focusing is a real pain as everytime you make an adjustment the whole thing vibrates, and you have to wait until it settles down to see if it was right. The hole contraption vibrates when the shutter fires (yes I do have mirror lockup, it helps, but the actual shutter on the 20D can vibrate the setup quite noticeably) and finally the results weren't that great, really soft around the edges, only sharp in the centre.
What I think will help would be:
- Bigger glass 70mm+, preferably 100mm+
- A stable equatorial mount
- A counter weight to offset the camera a reduce vibration from the shutter
What I have also thought is most modern telescopes have the threaded T mount already there, so I can conect straight to it, with that set up how do I change magnification (normally handeled by the eyepiece?)
Is getting sharp images from consumer grade gear a reality at all?
Thanks in advance!
I have had a cheap 60mm diameter Tasco for some time, quite old, the cheap mount not an equatorial and the older style .98inch eyepieces.
Anyway scored a camera adaptor and a T-Mount to Canon EF adaptor, set it all up the other day to try and capture the trasition of Jupiter behind the Moon.
Not happy at all with the results. Focusing is a real pain as everytime you make an adjustment the whole thing vibrates, and you have to wait until it settles down to see if it was right. The hole contraption vibrates when the shutter fires (yes I do have mirror lockup, it helps, but the actual shutter on the 20D can vibrate the setup quite noticeably) and finally the results weren't that great, really soft around the edges, only sharp in the centre.
What I think will help would be:
- Bigger glass 70mm+, preferably 100mm+
- A stable equatorial mount
- A counter weight to offset the camera a reduce vibration from the shutter
What I have also thought is most modern telescopes have the threaded T mount already there, so I can conect straight to it, with that set up how do I change magnification (normally handeled by the eyepiece?)
Is getting sharp images from consumer grade gear a reality at all?
Thanks in advance!