webcam focusing issue

[burger]

Tried to get an image of the moon last night in the 30 mins clear sky we had.

Tried all eyepieces no problem at all.

Tried with the webcams I have and just do not seem to get a sharp image, its as thought I just need to turn the focus wheel a fraction more to get it in sharp focus.

I have a skywatcher 130M 900mm and in camera terms its a though I need to take one step away from the subject.

I removed the eyepiece socket and screwed the webcam directly in its place and that just about focused as it was that fraction nearer but then the clouds came and I gave up.

Is it just too strong for the moon without an eyepiece and will I have the same issue when I connect my Canon DSLR (not got the adapter yet)

Many thanks

Mark

[brucen]

I use a barlow with my webcam as that allows it to focus. This link explains why you get better results using a barlow irrespective of the focus issue.

http://www.project-n...cam_imaging.pdf

[JamesF]

This is a common problem with the 130. Using a barlow is the "easy" way to move the focus point out a little, but obviously that means your field of view is smaller. To get focus without a barlow you need to start modding something somewhere depending on how confident you feel.

James