Dennis,
Thank you so much for that, much appreciate!
Regards,
Humayun
Quote:
Originally Posted by Dennis
My experience so far has been that my prototype printed mask on A4 transparency (with the gaps cut out with a sharp knife) for my C9.5 has worked at the native focal length of F10, with the Celestron Reducer/Corrector at F6.3 and also using various PowerMates from x2.5 to x4. A similar story for the Mewlon 180 at F12 (native), F9.6 (Reducer/Flattener) and all the way up to F48 with a x4 PowerMate.
For DMK webcams and my Canon 40D, I simply eyeball the focus as the camera control applications I use don’t have a means of measuring focus by e.g. FWHM. However, when using my SBIG ST7E and CCDSoft, I may end up making very small tweaks using a motorised focuser, as CCDSoft (camera control software) has software assisted focusing.
Cheers
Dennis
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