D
dustin s
Guest
It is a 8" F/3.6 Newtonian Telescope Focal Length-750mm
I can now focus Saturn as I couldn't before. As it turns out it has a VERY shallow depth of focus.
Now I focus Saturn and can see 3 images of itself all seemingly stacked together. but off angle by about 30Deg, positive and negative, the ring positions that is.
should be like this
--0--
But looks like this
>0<
I can resolve stars and nebulae and the moon perfectly...but Saturn looks doubled or tripled, off by 30Deg.
And yes I checked with a purchased 4.75" Newtonian and its not the atmospheric distortion. Its been virtually the same for a couple of days now, regardless of weather, cool down time of mirrors, etc.
What kind of aberration could it be? I did check against Venus the other day and it looked fine. I don't have a polarization filter so It was VERY BRIGHT.
But I haven't checked against Jupiter or any other planets yet because of their relative positions now.
Any ideas?
I can now focus Saturn as I couldn't before. As it turns out it has a VERY shallow depth of focus.
Now I focus Saturn and can see 3 images of itself all seemingly stacked together. but off angle by about 30Deg, positive and negative, the ring positions that is.
should be like this
--0--
But looks like this
>0<
I can resolve stars and nebulae and the moon perfectly...but Saturn looks doubled or tripled, off by 30Deg.
And yes I checked with a purchased 4.75" Newtonian and its not the atmospheric distortion. Its been virtually the same for a couple of days now, regardless of weather, cool down time of mirrors, etc.
What kind of aberration could it be? I did check against Venus the other day and it looked fine. I don't have a polarization filter so It was VERY BRIGHT.
But I haven't checked against Jupiter or any other planets yet because of their relative positions now.
Any ideas?