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ZEISS DTI thermal imaging cameras. For more discoveries at night, and during the day.

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  1. B

    Opinion on Celestron C5

    Thank you Ruff-leg. That is a good and fair review. Incidentally, I easily split both components of epsilan Lyrae, around 2.4 arcseconds with a Vivitar 600mm f/8 solid Cat lens at 180x and less well with an Optomax 500mm f/8 mirror lens at 150x. My friend uses 185x with a Skywatcher 102mm...
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    Opinion on Celestron C5

    I have used the C5 years ago for mainly astro use. But they vary in quality, although they may now be generally good. I have used the f/6 and f/10 versions, maybe now they are only f/10. They are I think SCT telescopes with a thin front corrector. If this breaks, it is probably cheaper to get...
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