I've noticed this on cold nights - it may your eyepiece fogging up a bit
(it also happens on finderscopes). You can really see it if you shine a
light on the eyepiece directly. It tends to happen in the center of the
field lens first, which is of course right where the planet is, ideally.
Try viewing off-axis and see if that helps.
To fight the fog, you can temporarily fix it by fanning the eyepiece with
something, paper, gloves etc. I also have to concentrate on breathing away
from the from the eyepiece (takes practice). Other people have strapped
those chemical heat packs to the eyepiece with a rubber band - I haven't
tried this yet.
Hope that helps - let us know if you figure it out!
Nick
On Fri, Apr 8, 2016 at 10:36 AM, <ronpfid@xxxxxxxxxxxxxx> wrote:
Hey, question to all Jupiter observers..
I’m in Post Falls, about a 1/2 mile north of the river. I have yet to get
a clean view of Jupiter, (going to try tonight again), I keep seeing this
contrast robbing glow around and in front of it.
Anyone else having this issue?
(not my scope, tried 2 scopes, all eyepieces clean, all optics clean, I
can even see it in my finder scope)
I’m wondering if it’s (it really looks like) a high ‘mist’ maybe from the
river spewing moisture in the warmth of the day, then the cold night
condensing it into like a thin fog?
Thanks!
Ron
