Jupitur's warm glow

Started by Tad Gallion, 02/07/2011 11:26AM
Posted 02/07/2011 11:26AM | Edited 02/07/2011 11:28AM Opening Post
Hello fellow observers - I primarily observe in urban settings so I can show passersby the bright night sights - i.e. the planets and Moon. However, about 7 years ago I was observing with a group in a dark location where one gentleman had a 4"-5" AP refractor not far from my NX11 and we had both trained our scopes on Jupitur. I enjoyed what my Celestron could put-up, but the one thing that really bugged me is the other guy's Jupitur was clearly glowing in soft yellows and browns. My image had only hints of color.

Ever since then during my public astonomy events I cringe every time someone says, "So why is it white?". Puzzle me this colleagues: is there a cleaver way to improve the color of that fine planet in a largish SCT? Perhaps I'm getting too much light and need to mask the scope some how? I'd prefer not to use a color filter as they just make the planet look like someone peed the pool. But perhaps one of you has used a sky glow filter or some other strategy improve visual color quality with great success?
Posted 02/08/2011 12:41PM #1
Hi Tad,
I don't have a definitive answer but I also prefer the view of Jupiter through a refractor. You might want to try observing Jupiter just as it appears after sunset. Since it isn't as bright you may get a feel for what it would look like if you used a mask on your scope.
Bill
Posted 02/08/2011 04:01PM | Edited 02/08/2011 04:59PM #2
Tad,

I agree with Bill about observing Jupiter

I live in central N.C., and I have experienced over the years that the best time to observe Jupiter is just before dark, there is a period of time when the heating of the day stops, the air gets extremely steady for a short period before the cooling process really kicks in, thats the most stable time around here to view the planet.. and you can see more detail due to the fact that the surface brightness is low.(it varies from day to day in time but usually 30 minutes to an hour)

Mark Clegg
Pittsboro, N.C.
Posted 02/11/2011 08:10PM #3
Thanks for your thoughts my friends. Unfortunately with public astronomy I have my scopes out in the late evenings with the lines awaiting their viewing - so viewing early may Ne nice for me but not for them.
I reckon I'll fiddle with masking and my filters and see if I can make some anetaru magic.
Tad
Posted 02/11/2011 10:33PM | Edited 02/11/2011 10:33PM #4
Try using a Polarizer filter - one that fits the bottom of your eyepiece so you can "dial it in" by rotating the eyepiece. I would also recommend using a Baader Neodymium Filter in the light dome you are in. This greatly reduces many negative effects city lights will cause.

-Gary
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