Quote:
Originally Posted by Star Catcher
Hi Geof
Tend to agree with Paul. Although the distortion of the energy spot in the centre is a bit odd, almost suggestive of pinched optics, however the donut looks pretty symmetrical. Did you test with a good laser to see if return beam hits the centre spot? The following thread on Cloudynights might shed further light: http://www.cloudynights.com/ubbthrea...7/Main/6544222
Ted |
It is pinched optics - don't have a good laser but the Takahashi Collimation scope is the one recommended by RCOS for collimating their scopres. It seems reliable. Thanks for the C/N Thread sheds a bit more light on the subject.