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Too much Barlow?
Hi,
A while ago I bought a Televue 3x barlow for use with my Meade LPI and VC200L (8 inch) scope. I have not been able to use this for either visual (I'm not really surprised!) or imaging work though.
When fitted the LPI acts as a 6mm ep - thus native magnification is 300x, with a 3x balow in I am trying to work at a massive 900x (0.2" per pixel), I cannot get decent results though. With a 2x barlow I can get decent sharp frames at frequent enough intervals to be useful but seeing always seems to defeat me with the 3x in place...am I dreaming? I thought the extra image scale would help - in fact the opposite seems true with my images with the 2x looking sharper even scaled up...
Perhaps I have just never had really good seeing to work with...but, if true, that means those nights are so rare the 3x is not going to get much tube time...
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