73498Re: [ccd-newastro] Weird curvature with Hyperstar lens
- Oct 19, 2013Never seen that, but generally, with very fast systems, spacing is critical. The first thing I would check is that every part of the system is where it is specified to be. If you have any extras in the imaging setup, remove them and go to factory spec.It may also be that your camera covers more than the available flat field.
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On Oct 18, 2013, at 23:15, Mark Striebeck <mark.striebeck@...> wrote:Hi,I spent quite some time collimating my hyperstar lens. I could get almost all collimation out, but a pretty strong and weird curvature remains: http://goo.gl/cVH6h7Does anybody have any idea where this comes from - and how to fix it?ThanksMarkS
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