Image of the day

Captured by
Douglas Rollain

Lion Nebula SH2-132 - RC71

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Posts Made By: Thomas V Davis

October 27, 2005 08:20 PM Forum: CCD Imaging and Processing/Solar System

Mars Oct 26, 23h12 UT

Posted By Thomas V Davis

Wonderful!

Tom

October 29, 2005 01:37 PM Forum: CCD Imaging and Processing/Deep Sky

Planetary Nebula - NGC 6781

Posted By Thomas V Davis

Jim,

That is very, very well done.

Tom

October 31, 2005 01:39 AM Forum: CCD Imaging and Processing/Deep Sky

M78 revisited

Posted By Thomas V Davis

Sorry, here's the link to the original...

http://www.tvdavisastropics.com/astroimages-1_000022.htm

Tom

November 2, 2005 03:57 PM Forum: CCD Imaging and Processing/Deep Sky

M31 - added color

Posted By Thomas V Davis

Very nice FOV!

Tom

November 8, 2005 12:29 AM Forum: CCD Imaging and Processing/Deep Sky

M45, Merope and IC349

Posted By Thomas V Davis

Now that is truly cool!

Tom

November 21, 2005 12:03 AM Forum: CCD Imaging and Processing/Deep Sky

Rosette in Ha

Posted By Thomas V Davis

Now that is very nice!!

Tom

November 26, 2005 03:08 AM Forum: CCD Imaging and Processing/Deep Sky

M1

Posted By Thomas V Davis

Nicely done!

Tom

November 26, 2005 10:11 PM Forum: CCD Imaging and Processing/Deep Sky

M78 from Utah

Posted By Thomas V Davis

Tyler,

The nebula is a little soft in detail but all-in-all a nice image!!

My version and yours have a very similar FOV -- that's neat! I love the colors of this region.

http://www.tvdavisastropics.com/astroimages-1_000022.htm

Best,

Tom

December 1, 2005 06:17 PM Forum: CCD Imaging and Processing/Deep Sky

Disaster Recovery - Rosette in H-alpha

Posted By Thomas V Davis

I routinely set up the imaging sequence then go to sleep. I also have had times when alot of the images are lost (lost guide star due to clouds). Isn't it a BUMMER!!

Your image looks great (as usual)!

Tom

December 9, 2005 09:19 PM Forum: CCD Imaging and Processing/Deep Sky

Horsehead and Flame

Posted By Thomas V Davis

Hi Vincent,

Very well done! As you have found out this is a very hard region to process due to Zeta Orionis and other stars. The halos are internal reflections generally from light reflecting off the CCD chip -- back to the coverslip -- then back to the CCD chip. Here is an excellent review by Don Goldman:

http://www.astrodon.com/documentation/documentation.cfm?DocID=3

The halos can be processed out but really don't distract from a well done image. The only way to not get halos is buy a camera that doesn't have a CCD coverslip such as made by FLI or Trifid. All SBIG cameras have coverslips.

Best,

Tom