Is't this a problem?
Greetings;
I'm hoping someone may help me with my 10" dob?
When I look at the planet
Jupiter, at the 5:00 (disk)
position it displays a blue color fringe ,where the brite
meets the dark.
At the 10:00 it shows a red
fringe.
I tried rotating the ocular
and my head, to see if the fringe will also rotate and it does not.
I did align the light path.
thank you
Frank Borges 02859