Mike Clemens
Post Laureate
Reged: 11/26/05
Posts: 4286
Loc: Wasilla, Alaska 61N
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This is a challenging object for me to process.
This is (10) x 15mins at ISO1600
(TEC 200ED and EOS 40D)
Looking forward to adding more time tonight I hope. This is my first time using 15 minute frames @ ISO1600. Average background at 15 mins/ISO1600 is about 1480 counts. I guess I've got room to go longer, but I'd need to work out focus drift due to temperature.
Mike
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Rankinstudio
sage
Reged: 04/05/08
Posts: 425
Loc: Salt Lake City, UT, Lake Powel...
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Good job, the core in this one is really bright o.O
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David Rankin
http://www.rankinstudio.com
Astro Gallery
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SGT500
Carpal Tunnel
Reged: 10/03/06
Posts: 2924
Loc: Ny
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WOW!
Awesome closeup of 7331. one of the best ive seen
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-Sal
AstroTech Ritchey Chretien 8"
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QueueCT
super member
Reged: 06/25/08
Posts: 100
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Um, wow. The 15min subs really make a difference.
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Mike Clemens
Post Laureate
Reged: 11/26/05
Posts: 4286
Loc: Wasilla, Alaska 61N
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1x1 sensor scale
http://www.scopenews.com/astrophotos/galaxies/ngc7331.jpg
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waassaabee
Carpal Tunnel
Reged: 11/26/07
Posts: 2710
Loc: Central California Coast
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That's a beauty Mike!! Nice detail and the neighbors poking their head over the fence...
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Gary
34N 120W
-My kingdom for blue squares!-
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DHB001
super member
Reged: 07/07/09
Posts: 145
Loc: The Netherlands
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Excellent shot! Already a winner imho.
You're quite a productive imager btw, Mike. Do you regularly get a lot of clear nights up there in Alaska?
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Regards,
Boy
C6 SCT @ AS-GT mount
SW 70/500 guide scope
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Star surfer8
super member
Reged: 05/15/06
Posts: 494
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Nice work. Good details of the dark stuff.
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Tom
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Mike Clemens
Post Laureate
Reged: 11/26/05
Posts: 4286
Loc: Wasilla, Alaska 61N
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Thanks.
> You're quite a productive imager btw, Mike.
> Do you regularly get a lot of clear nights up there in
> Alaska?
Not really lately. I do usually take about 5-6 hours exposures on nights that work though. That number may go up to 8 or 10 hours as Winter tightens its grip.
I usually start on an object 2 hours before the meridian and then stop 2 hrs after meridian, then switch objects. I think I've done about 5 or 6 objects in the last couple months.
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David Pavlich
Postmaster
Reged: 05/18/05
Posts: 8687
Loc: Mandeville, LA USA 30.22 X 90....
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Another very nice galaxy, Mike!!
David
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Proud Member; PAS NOLA,
"If we knew what we were doing, it wouldn't be called research..."
A. Einstein
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Stardaug
professor emeritus
Reged: 08/03/08
Posts: 531
Loc: Ontario, Canada
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Outstanding imaging and processing once again!
Cheers.
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"Keep looking up!"
Shawn / Ontario, Canada
Celestron CPC800 SCT w/XLT & GPS // Skywatcher Equinox 80ED F6.25 500mm APO // Canon Rebel 350XT unmodded // Milburn EQ Wedge (a Meade model modified to fit my CPC)
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nickatnight
Carpal Tunnel
Reged: 04/14/08
Posts: 1751
Loc: Santa Clarita, CA (LA Suburbs)
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Now that's a party. Beautiful. Nice work Mike.
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nickatnight
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bardo
member
Reged: 09/13/09
Posts: 54
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wow. i really like the core. very well done!!!
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Nils_Lars
Post Laureate
Reged: 01/04/08
Posts: 3459
Loc: Santa Cruz Mountains , CA
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Superb image of this galaxy , another great one Mike.
15min subs , yikes its must have been cool temps to keep the sensor from pushing a bunch of noise into the shot.
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Erik
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http://www.flickr.com/photos/31986095@N05/
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Mike Clemens
Post Laureate
Reged: 11/26/05
Posts: 4286
Loc: Wasilla, Alaska 61N
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Thanks! Yes its below freezing now or right around there. Subs are getting quieter.
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KevinUK
Vendor (DSLR-AstroMod)
Reged: 08/22/07
Posts: 720
Loc: N 51'53 W 00'25
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Mike fantastic image, you've resolved 7331 beautifully, just amazed at the level of detail captured.
What scope are you using and imaging device?
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DSLR AstroMod
DSLR filter removal and replacement packages
http://www.dslrastromod.co.uk
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Mike Clemens
Post Laureate
Reged: 11/26/05
Posts: 4286
Loc: Wasilla, Alaska 61N
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Thanks, this is EOS 40D unmodified with a TEC 200 f/9 refractor and field flattener.
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planetman83
member
Reged: 09/17/07
Posts: 57
Loc: Greece-Crete
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Awesome!
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Mobius1
professor emeritus
Reged: 08/28/05
Posts: 700
Loc: Madison, WI / Gurnee, IL
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Love it! And you got so many other fuzzies in there 
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Martin
William Optics 66SD
Orion 100ED
Orion 120-ST EQ
PST-Ha
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DSI-IIC
Homemade spectroscope in progress...
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(24" Cass on weekends)
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KevinUK
Vendor (DSLR-AstroMod)
Reged: 08/22/07
Posts: 720
Loc: N 51'53 W 00'25
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Quote:
Thanks, this is EOS 40D unmodified with a TEC 200 f/9 refractor and field flattener.
Oddly, I imaged the exact same target a few weeks back with a C9.25 @ f/10 and 450D, almost same integration time, 2hr15mins.
FOV should be very similiar, yet 7331 is no where as large as yours in my original image??
Not taking anything away from your wonderful image, but anyone who says dark skies don't help are fooling themselves!
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DSLR AstroMod
DSLR filter removal and replacement packages
http://www.dslrastromod.co.uk
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