I have a small 5 inch Newtonian. When I look at bright objects-Venus or Mars I have noticed recently that I see multiple rays-that is star points around the disc, particularly when I use a modified webcam for real time viewing on a PC, but also when I use a normal eyepiece
Distant stars seem OK. I seem to see them as points of light, it's the bright planets that are giving me this grief, even with my lowest power eyepiece
Deep space -nebulae and globulars and so on-too, look faint but OK.
Is it a problem with my mirror? my collimation? my eypiece quality? or is that just the way it is and something one has to put up with?
Is this diffraction and can anything be done to control it?
I would appreciate any help anyone can provide....
Thanks in advance