 novbabies
Postmaster
Reged: 06/05/05
Posts: 15678
Loc: Northern Georgia!
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Just wanted to post this: on the night of 1-1-08, temps in the 30s and 20+ mph sustained wind, with DGM NPB in 12" f/4.9 with 40mm Paragon at 38X, unambiguously and for the first time observed the Rosette Nebula - even though it was still pretty low in the sky  !!!
Can't wait until later in the season when it is higher up  !
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Good Seeing!
Mark
Orion 12" XTi f/4.9
VERY old Edmund 6" f/8 reflector
Assorted binoculars
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Jeff Young
Post Laureate
Reged: 08/04/05
Posts: 4115
Loc: Ireland
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Mark --
I had quite a bit of difficulty with the Rosette too, mostly because I can't get much under 100x, and so it fills the entire field of view. What I finally did was to look for the edge of the darker center, which is most distinct along the N edge and to the SW.
I still don't think I would have ever found it without the UHC. Once I knew exactly where to look and what I was looking for, it was visible without filtration, but it was extremely subtle. FWIW, I found that the UHC (which should be similar to your NPB) worked better than an OIII.
It's almost easier to find in my 4" refractor (again with the UHC), although there isn't much to see through it even when you do find it.
Cheers,
-- Jeff.
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Nikon 18x70s / UA Millennium Colorado:
Solarscope SF70 / TV Pronto / AP400QMD Coronado SolarMax40 DS / Bogen 055+3130
APM MC1610 / Tak FC-100 / AP1200GTO Tak Mewlon 250 / AP600EGTO
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David Knisely
Postmaster
Reged: 04/19/04
Posts: 8279
Loc: Beatrice, Nebraska
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Quote:
Mark --
I had quite a bit of difficulty with the Rosette too, mostly because I can't get much under 100x, and so it fills the entire field of view. What I finally did was to look for the edge of the darker center, which is most distinct along the N edge and to the SW.
I still don't think I would have ever found it without the UHC. Once I knew exactly where to look and what I was looking for, it was visible without filtration, but it was extremely subtle. FWIW, I found that the UHC (which should be similar to your NPB) worked better than an OIII.
It's almost easier to find in my 4" refractor (again with the UHC), although there isn't much to see through it even when you do find it.
Cheers,
-- Jeff.
Well, I find it quite detailed under dark skies in my 100mm f/6 refractor at from 15x to 25x using the UHC filter. It shows somewhat more contrast with somewhat filamentary or tattered edges in the OIII filter, but it appears larger in the UHC. Clear skies to you.
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David W. Knisely
Hyde Memorial Observatory
http://www.hydeobservatory.info
Prairie Astronomy Club
http://www.prairieastronomyclub.org
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Jeff Young
Post Laureate
Reged: 08/04/05
Posts: 4115
Loc: Ireland
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Quote:
Well, I find it quite detailed under dark skies in my 100mm f/6 refractor at from 15x to 25x using the UHC filter. It shows somewhat more contrast with somewhat filamentary or tattered edges in the OIII filter, but it appears larger in the UHC. Clear skies to you.
David --
Yeah, I probably should have clarified that my remarks were from under moderately light-polluted skies (NELM 5.5, SQMs around 20.7).
It's probably also worth pointing out that I don't have the experience David does, so I see less than he does even under similar skies. One has to learn to see -- I used to find it really discouraging when I'd read David's or Don's (StarMan) or some of the other expert's reports, but I'm now coming (slowly) up the curve.
Cheers,
-- Jeff.
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Nikon 18x70s / UA Millennium Colorado:
Solarscope SF70 / TV Pronto / AP400QMD Coronado SolarMax40 DS / Bogen 055+3130
APM MC1610 / Tak FC-100 / AP1200GTO Tak Mewlon 250 / AP600EGTO
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Thunderhead
professor emeritus
Reged: 08/27/05
Posts: 562
Loc: Melbourne, Australia
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Good work Mark! I was out last night and was on my hit list, but the mosquitos and heat were drivign me crazy. It is NOT fun wearing tracksuit pants and a jumper to block out mozzies when its 80+ degrees! However I did see the globule in NGC 1999. Will post a report later.
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SAB - Melbourne, Australia
GSO 10" F5 Dob with flocking & dewshield
12" (304mm) F4.6 truss dob with premium optics
Edited by Thunderhead (01/04/08 06:53 PM)
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novbabies
Postmaster
Reged: 06/05/05
Posts: 15678
Loc: Northern Georgia!
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TH, I can relate some, I wear DEET and it works great, but I also wear thick clothing to discourage brave ones ( ! ), and when I come in in the Summer it is time for sa shower !!!
Great news too on the NGC 1999. It is an awesome albeit so very tiny sight, eh ?
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Good Seeing!
Mark
Orion 12" XTi f/4.9
VERY old Edmund 6" f/8 reflector
Assorted binoculars
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Thunderhead
professor emeritus
Reged: 08/27/05
Posts: 562
Loc: Melbourne, Australia
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actually at 625x it's surprisinlgy big!
Couldnt help but laugh when I found wikipedia's description of it:
" It has an appearance similar to a giant space phallus."
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SAB - Melbourne, Australia
GSO 10" F5 Dob with flocking & dewshield
12" (304mm) F4.6 truss dob with premium optics
Edited by Thunderhead (01/04/08 10:35 PM)
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Americal
super member
Reged: 09/14/07
Posts: 144
Loc: Under the L. A. lightdome
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I caught it with C11 at 7K' last year in the east central California mountains. No filter and it was obvious to my son and me as well as 3 really inexperienced neophytes. I think the key to these low contrast, extended objects is really dark skies. That night the Veil was also a striking look. I don't like the time/gas to drive 200 miles but once I'm there it's hard to share the eyepiece. 'sides its a good excuse to go back country camping.
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Tom
Some's good, more's better...too much is just right
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4 1/4" f/5 homebuilt Newt
6" f/8 homebuilt Newt
8" f/5.1 homebuilt Newt
C11 ASGT (no, it's not homebuilt)
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Nick Lloyd
He asked for it
Reged: 10/24/06
Posts: 2156
Loc: cincinnati
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Quote:
I was out last night and was on my hit list, but the mosquitos and heat were drivign me crazy. It is NOT fun wearing tracksuit pants and a jumper to block out mozzies when its 80+ degrees!
Sorry, no sympathy here! Give me your heat and bugs, please. 
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"The best scope is the one you use." -rcg
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Dave Mitsky
Postmaster
Reged: 04/08/02
Posts: 10499
Loc: PA, USA, Planet Earth
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I had a fine low power view of the Rosette two Saturday nights ago through a friend's filtered 18" Obsession.
Dave Mitsky
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Chance favors the prepared mind.
De gustibus non est disputandum.
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sgottlieb
sage
Reged: 07/22/07
Posts: 339
Loc: SF Bay area
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A fun experiment in a dark sky is to see the Rosette naked eye!
Of course, in a dark sky you can readily see the bright 5th magnitude cluster, NGC 2244, in the center. But using an OIII filter the apparent visual diameter of that naked-eye blob (there's no structure) noticeably increases in size as you pick up the Rosette nebula itself, although the overall brightness is slightly fainter with the filter as the central cluster is greatly dimmed.
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Steve Gottlieb
18" f/4.3 Starmaster
Adventures In Deep Space
7500+ NGC/IC Visual Descriptions
NGC/IC Project
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novbabies
Postmaster
Reged: 06/05/05
Posts: 15678
Loc: Northern Georgia!
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I have heard this is possible, I did try but with negative results; need to wait until it is higher up !
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Good Seeing!
Mark
Orion 12" XTi f/4.9
VERY old Edmund 6" f/8 reflector
Assorted binoculars
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David Knisely
Postmaster
Reged: 04/19/04
Posts: 8279
Loc: Beatrice, Nebraska
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Quote:
A fun experiment in a dark sky is to see the Rosette naked eye!
Of course, in a dark sky you can readily see the bright 5th magnitude cluster, NGC 2244, in the center. But using an OIII filter the apparent visual diameter of that naked-eye blob (there's no structure) noticeably increases in size as you pick up the Rosette nebula itself, although the overall brightness is slightly fainter with the filter as the central cluster is greatly dimmed.
It may be somewhat better to use a narrowband filter like the UHC rather than an OIII line filter for this trick. The nebula will appear somewhat easier in the UHC, although an OIII will help as well. Clear skies to you.
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David W. Knisely
Hyde Memorial Observatory
http://www.hydeobservatory.info
Prairie Astronomy Club
http://www.prairieastronomyclub.org
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