Quote:
Originally Posted by niko
Hi there,
just testing my new webcam with a Celestron 130SLT with plans to take moon avis.
Given the cloudy Melbourne skies (which WILL clear before the weekend!) I tested using the city skyline.
I can achieve focus on the trees across the road but not the city buildings in the 'far' distance. I'm all the way to the lower limit.
So, my question is - will an extension tube or barlow assist or do I have to move the primary mirror up the tube???
Thanks in advance guys.
niko
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I have a 130SLT but I never had an in-focus problem.
Are you using the stock focuser (plastic one). I use a 10:1 GSO. I think the original was a bit longer but not by much. Yes a barlow (x2) will get you out of trouble.