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Ralf Vandebergh
Pooh-Bah
Reged: 08/25/06
Posts: 1385
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subject: 2009/07/27 Jupiter green light observation
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This nicely illustrates the contrast of the impact spot. Even in poor seeing and low altitude it's an obvious object
subject: green light high contrast image
23:48 UTC CM2=259 green channel HC
altitude 24° in poor seeing. The green channel image
was choosen as it had best separation of impact spt
off the limb darkening (10inch Newtonian )
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Ralf Vandebergh
http://saturnreport.startje.be/vieuw.php?qid=258555
Edited by Ralf Vandebergh (07/29/09 07:34 AM)
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square_peg
Postmaster
Reged: 03/26/04
Posts: 31441
Loc: Maple Valley, WA
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Has anyone tried a green filter visually?
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Tom (Pegster)
DSH-8 (GSO Dob)
15x70 Oberwerks
SVP/ED80
WO 66 Petzval
Sears Discoverer EQ 60/900
8x42 Regals
History is Philosophy teaching by examples.
Thucydides
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RLTYS
Carpal Tunnel
Reged: 12/18/04
Posts: 2327
Loc: New York (Long Island)
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Quote:
Has anyone tried a green filter visually?
No, but if I get another chance to observe Jupiter I'll try it.
If the weather ever clears.
Rich (RLTYS)
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10" F4.8 Refl.
4" F5 Refr. (Genesis)
3" F4 Celestron FirstScope
50mm F12 Refr. (Tasco #6TE-5)
12x63 and 10x50 Binoculars.
"I want to do more then just look."
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dfell
professor emeritus
Reged: 06/25/05
Posts: 707
Loc: Wetaskiwin, Alberta, Canada
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Used an Optica b/c 1970's green #11 on the spot last night, in good seeing, much detail was seen at 200X when Jupiter reached the meridian.
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www.spacealberta.com
12" collapsible Dob
25" Round Table Platform
Ethos 13mm
original TV smoothside plossls
80mm f/15 Towa Refractor
PST
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square_peg
Postmaster
Reged: 03/26/04
Posts: 31441
Loc: Maple Valley, WA
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How did the view compare to the non-filtered view? Any more or less contrast?
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Tom (Pegster)
DSH-8 (GSO Dob)
15x70 Oberwerks
SVP/ED80
WO 66 Petzval
Sears Discoverer EQ 60/900
8x42 Regals
History is Philosophy teaching by examples.
Thucydides
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Tommy5
Carpal Tunnel
Reged: 03/28/04
Posts: 1981
Loc: Chicagoland
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i use #11 and a lt. green #58 filter on jup and it always enhances the bands, the impact is a high contrast feature but it is still darker using the green filter visually also i use a 6" achro C6R for observing which is best corrected for green anyway.
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CarlosEH
Post Laureate
Reged: 01/19/05
Posts: 4601
Loc: Pembroke Pines, Broward County...
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Ralf,
An excellent image of Jupiter and the Wesley Comet Impact Scar (WCIS) in green light. A green filter (Wratten 56 or 58) will darken both red and blue features over the atmosphere of Jupiter. A favorite filter of mine for observing Jupiter is a blue-green filter (W64). Thank you for sharing it with us all.
Carlos
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