|
No one has mentioned an IR cut filter yet.
Jupiter radiates in the IR as well as visible.
If you have removed the typical webcam IR cut filter (sometimes part of
the cheap lens you throw away) then focusing can never quite seem perfect
and a loss of contrast is sometimes evident.
M- type stars are a good example of this when your webcam or planetary
camera can do long exposures.
I used to get a halo around red M type stars.
This was the un-focussed IR while all other visible was focused.
As some have suggested, doing Jupiter in narrowband can be quite
rewarding too.
|