Quote:
Originally Posted by gb_astro
Renato what is the appearance of the out of focus star image with no aperture stop on?
You are placing the test star very near the center of your eyepiece's field of view?
gb.
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The star is dead centre and it becomes a concentric doughnut without any rings.
Believe me - when I first got it I was scratching my head as it didn't do what my other reflector, refractor and C8 was doing - they all gave me rings. I immediately had to order a Cheshire.
Cheers,
Renato