Thanks for that Alexander
Yes I do have a Dob a 8" skywatcher, it has a stop in the aperture cover the opening is about 50mm but using this also shrank the image using a 10mm ep. Would a ND filter solve the glare problem?
I'm assuming that loosening the clips would be best done at night while using the scope so as to achieve the desired result. Is there a risk of miscollimating the scope while doing this? I am waiting on collimation tools so would rather wait till I have them if this is so.
Thanks again
Jeff