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ASTRO: UGC 9242
Ninety some percent of the rain in California occurs between November
and March with the April - June period being unsettled. In addition, the Central Valley of California drains to the ocean through the Carquinez Strait and the San Francisco bay which means that marine moisture that enters the valley comes in through that path. My location is in that pathway and is always impacted whenever there is a marine layer intrusion into the valley. This year the rains started in October and marine layers are prevalent on the nights when the skies are clear so a clear night in which seeing is approaching a 3 is a good night. I guess I'm moaning and groaning in an attempt to say that I don't have any reasonably good images to post so I will post some images from previous years. When I checked APOD this morning and saw Hubbles view of NGC 4452 I was reminded of one the super thins I maged, UGC 9242. UGC 9242 Bootes Penryn, California April 2010 FS-128 (ag, St-4) ST-2000XM LR(s)GB 10 minutes subs UGC 9242 is un-classified as and listed as a super thin edge on galaxy without a nuclear bulge component. Note the two lobes on either end of the galaxy and the dark flattened nucleus. This galaxy is reddened and extinguished somewhat by dust with in our galaxy (max -0.50 mag.). Red shift distance is 66 Mly. |
#2
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ASTRO: UGC 9242
Good image Glen.
I imaged that galaxy under dark skies a few years back but seeing was atrociously bad in that night, even 2x2 binned images looked soft. Stefan "glen youman" schrieb im Newsbeitrag news Ninety some percent of the rain in California occurs between November and March with the April - June period being unsettled. In addition, the Central Valley of California drains to the ocean through the Carquinez Strait and the San Francisco bay which means that marine moisture that enters the valley comes in through that path. My location is in that pathway and is always impacted whenever there is a marine layer intrusion into the valley. This year the rains started in October and marine layers are prevalent on the nights when the skies are clear so a clear night in which seeing is approaching a 3 is a good night. I guess I'm moaning and groaning in an attempt to say that I don't have any reasonably good images to post so I will post some images from previous years. When I checked APOD this morning and saw Hubbles view of NGC 4452 I was reminded of one the super thins I maged, UGC 9242. UGC 9242 Bootes Penryn, California April 2010 FS-128 (ag, St-4) ST-2000XM LR(s)GB 10 minutes subs UGC 9242 is un-classified as and listed as a super thin edge on galaxy without a nuclear bulge component. Note the two lobes on either end of the galaxy and the dark flattened nucleus. This galaxy is reddened and extinguished somewhat by dust with in our galaxy (max -0.50 mag.). Red shift distance is 66 Mly. |
#3
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ASTRO: UGC 9242
On 11/9/2010 12:15 PM, glen youman wrote:
Ninety some percent of the rain in California occurs between November and March with the April - June period being unsettled. In addition, the Central Valley of California drains to the ocean through the Carquinez Strait and the San Francisco bay which means that marine moisture that enters the valley comes in through that path. My location is in that pathway and is always impacted whenever there is a marine layer intrusion into the valley. This year the rains started in October and marine layers are prevalent on the nights when the skies are clear so a clear night in which seeing is approaching a 3 is a good night. I guess I'm moaning and groaning in an attempt to say that I don't have any reasonably good images to post so I will post some images from previous years. When I checked APOD this morning and saw Hubbles view of NGC 4452 I was reminded of one the super thins I maged, UGC 9242. UGC 9242 Bootes Penryn, California April 2010 FS-128 (ag, St-4) ST-2000XM LR(s)GB 10 minutes subs UGC 9242 is un-classified as and listed as a super thin edge on galaxy without a nuclear bulge component. Note the two lobes on either end of the galaxy and the dark flattened nucleus. This galaxy is reddened and extinguished somewhat by dust with in our galaxy (max -0.50 mag.). Red shift distance is 66 Mly. Flat Galaxy Catalog is another catalog I've been mining for targets. This is one on that list. I've been so tied up with Arp's I've not thought about it until the one in the APOD reminded me. Interestingly that one ISN'T in the FGC, not quite flat enough! The APOD image has lots of IR in it. Looking at the POSS plates of that one the blue shows a rather nice bulge not seen in the APOD/HST version. Red lesser and virtually none like Hubble in near IR. FGC requires an 8:1 or greater ratio in blue light, revised catalog says it has to meet that in red and blue light. Or so I've been told. I've not started on it in earnest so haven't done my own research as yet. This one appears slightly tilted to me yet still is just a thread in the sky. Yours came out quite well. Lots of motling along the thread. I am hit by weather too which is common this time of the year. But when clear normally here seeing is fairly good. Not this year. Even when clear it rates a 2 at best. At that level I can't really even find a focus. Normally a move of 25 microns is enough to see a focus change. With the seeing of late I can move 250 microns and not see a change! That's bad! I hate it when it is clear and yet a star shows a 5" FWHM instead of around 2". Rick -- Correct domain name is arvig and it is net not com. Prefix is correct. Third character is a zero rather than a capital "Oh". |
#4
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ASTRO: UGC 9242
On Wed, 10 Nov 2010 02:19:44 -0600, Rick Johnson
wrote: Flat Galaxy Catalog is another catalog I've been mining for targets. This is one on that list. I've been so tied up with Arp's I've not thought about it until the one in the APOD reminded me. Interestingly that one ISN'T in the FGC, not quite flat enough! The APOD image has lots of IR in it. Looking at the POSS plates of that one the blue shows a rather nice bulge not seen in the APOD/HST version. Red lesser and virtually none like Hubble in near IR. FGC requires an 8:1 or greater ratio in blue light, revised catalog says it has to meet that in red and blue light. Or so I've been told. I've not started on it in earnest so haven't done my own research as yet. This one appears slightly tilted to me yet still is just a thread in the sky. Yours came out quite well. Lots of motling along the thread. I am hit by weather too which is common this time of the year. But when clear normally here seeing is fairly good. Not this year. Even when clear it rates a 2 at best. At that level I can't really even find a focus. Normally a move of 25 microns is enough to see a focus change. With the seeing of late I can move 250 microns and not see a change! That's bad! I hate it when it is clear and yet a star shows a 5" FWHM instead of around 2". Rick I've a lot of images acquired with very poor seeing. I consider them survey images and those that interest me go on a re-shoot list in hopes that I'll have some good seeing the next time they are available for imagiing. |
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