Saturn troubles

[jsranchod]

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?

[Clayton]

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.

[tjensen]

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

[jsranchod]

Here it is, notice the stronger and fainter images.

[Freddie]

I don't see a pic.

[Cloudwatcher]

Camera shake perhaps........was it windy? Did you use a remote shutter release?

[teleaddict]

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

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

[Cloudwatcher]

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.