Quote:
Originally Posted by iceman
Have you considered using a higher power? A 3x, 4x or even a 5x?
What's the FL of your 16"?
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Hi Mike,
My scope is F 4.5 and yes I do have a 3x Barlow.
I estimate that the 2x is giving me the equivalent magnification of a 2mm F/L eyepiece, that would be about 900x.
Due to the very small structure I am trying to image I am content with the image scale provided by the 2x rather than trying to stretch the available light over an even greater area. I find it hard enough now to actually get the image onto the CCD, obviously as the magnification rises the FOV reduces. Another point that I see as being very pertinent is that as the magnification of the object increases we are also magnifying any atmospheric distortion even more.
I suspect that smaller scopes may work better with higher mags as the column of air they are looking through is smaller and hence possible likely to be more stable.
I wondered If you know of people with my size scope successfully imaging with the DMK through 4 or 5x Barlow's?
When Saturn is no longer available I may experiment with more magnification but at the moment I am more or less obsessed with getting usable scientific data.
Regards
Trevor
