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Old 10-05-2018, 11:49 AM
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Howard (Howard)
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Join Date: Jun 2013
Location: Brisbane, Australia
Posts: 37
Quote:
Originally Posted by ChrisV View Post

What camera are you using on the hyperstar?
GDay Chris ... doesn't matter which camera. The point of the idea of simply using a smaller mask hung around the edges is .... People currently buy a full size mask and fuss over cutting it into two halves so they can put it over/around the camera which is attached to the hyperstar. As clearly the camera has to be on the hyperstar in the optics chain in order for one to focus it. So after cutting they carefully figure out how to fashion some velcro/pivot idea to put the two mask back together once it is fitted over the camera on the hyperstar. Yup, all that works fine and you can like most people make one of those for hyperstar use ... but the video was to show you can buy a small mask, or 3D print a small one and simply slip it over the edge of the scope in the annulus between the hyperstar/secondary and the edge of the OTA ... and it works perfectly to throw a diffraction spike. Just thought I'd throw that vid into the post to generate an Aha moment ... cheers, Howie in Brissie.
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