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jsranchod

Saturn troubles

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I've been trying to take some images of Saturn, but every time I get it as in focus as I can the camera produces a double image. I used a Bahtinov mask to precisely focus the telescope on stars beforehand. I'm using an 8'' schmidt-cassegrain catadioptric telescope with a nikon d70 camera. I suspect it is a collimation issue, because I know it is at least a little bit off. Could that be causing this issue?

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I doubt that collimation is your issue (though it could be off)

Poor collimation normally produces an image that can't be brought into sharp focus.

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can you post an image for us to see? Poor collimation produces "soft" images. Bad collimation produces stars that are not points but shaped more like comets. A shot of an infocus star and one of saturn as well as one of an out of focus star would help us with a diagnosis.

Cheers

Tim

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Here it is, notice the stronger and fainter images.post-24368-0-45199700-1340396750_thumb.j

Edited by jsranchod

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your image wasn't taken through double glazing was it?

Here a shot I took on my first attempt at using a web cam.

post-22974-0-07272200-1340441567_thumb.j

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your image wasn't taken through double glazing was it?

Here a shot I took on my first attempt at using a web cam.

Good thinking........that looks very like the original.

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