Using my telescope as a camera lens
Feb 1, 2018 00:16:07 #
dlmorris
Loc: Loma Linda, Ca
Most any reflector type telescope has some sort of central obstruction, which degrades the image somewhat. I think, as some have suggested already, that taking videos and processing them is the best answer.
Feb 1, 2018 10:18:38 #
I've been trying Registax, but with no success. I've been working with a series of eight JPGs of the moon and the program keeps freezing up; after I hit "align" it gets to about 12% and just stops. I can't even exit; I have to use task manager to close the program. Any thoughts anyone?
Feb 1, 2018 11:37:14 #
broncomaniac wrote:
On my reflector. I should have used an ND, and a pair of pliers.
Why do you need an ND. Assuming that the correct exposure for the moon is f/22 @ 1/200 for ISO 200. I am sure your camera can go down to ISO 200 and the scope is f/8 or smaller aperture and your camera can go up to at least 1/4000. I see no need for ND.
Feb 1, 2018 16:18:51 #
FYI remember that the moon is really a moving object. Unless there is a guide motor moving the telescope at the same speed as the earth rotates, there is always going to be some motion. Stacking the pictures works because you are canceling the motion blur with more than one image. Not sure if this would be significant, but the moon is also rotating about the earth. Don't know if a guide motor on the telescope would cancel that out.
Feb 2, 2018 20:17:52 #
It took a while to figure out, but I did get Registax to work. I took a series of about a hundred shots using a Tamron 70 - 300 zoomed out and a 2x teleconverter. After stacking this is what I got.
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Feb 2, 2018 20:50:04 #
danlsmith
Loc: Columbus Ohio
Wow, great detail and no graininess at all! Wonderful shot. I've never stacked more than about 20 pictures myself, stacking 100 must have taken a while to process. Good job!
Feb 3, 2018 20:32:05 #
I don't know how the processing time compares; it really wasn't that long. Can you tell me what I'm doing when I sharpen layer 1, layer 2, layer 3, etc? I feel like I'm just pushing buttons at random.
danlsmith wrote:
Wow, great detail and no graininess at all! Wonderful shot. I've never stacked more than about 20 pictures myself, stacking 100 must have taken a while to process. Good job!
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