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RICHARD COFER

VdB 141 Ghost Nebula

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Posts Made By: Steve Mathis

February 22, 2011 11:09 PM Forum: Solar System Observing

LROC Mosaic

Posted By Steve Mathis
This is really worth checking out! It is a "zoomify" presentation of a 550 Mb (!!!) image, a mosaic of the visible face of the moon that you can peruse! It is a keeper!

March 28, 2011 10:38 PM Forum: Digital SLR AstroPhotography

Jellyfish Nebula

Posted By Steve Mathis
Here is a shot of IC 443, the Jellyfish Nebula in Gemini. The two bright yellow stars are Mu and Eta Geminorum, sort of "Castor's foot" to me. This is 12 x 10 min, ISO 1600, with an ED80 with FR and a Nikon D50. Stacked with DSS, processed with PS CS3. Comments, questions, criticism are welcome!

Steve

April 4, 2011 01:42 PM Forum: Digital SLR AstroPhotography

M 101

Posted By Steve Mathis
Here is M 101, taken with a modified Nikon D50 through an 8" f/4.9 Newt. 12 x 10min @ ISO 1600. Thanks for looking.

May 9, 2011 01:37 PM Forum: Digital SLR AstroPhotography

M 81 and 82 Mosaic

Posted By Steve Mathis
Here is a mosaic of two frames (does two constitute a mosaic?) of M 81 and 82, taken with an 8" f/4.9 Newt. I have a Baader MPCC attached to my modified Nikon D50, used for these images. Each frame is a stack of 15, 6 minute exposures at ISO 1600. Stacked with DSS, combined, and adjusted levels, curves, saturation and sharpness with PSCS3. Comments and criticism are welcome. Dang, it is lonely here.

Steve

May 9, 2011 10:26 PM Forum: Digital SLR AstroPhotography

M 84, M86 and company

Posted By Steve Mathis
This is the western end of "Markarian's Chain", containing M 84 and 86, and a host of other NGC's. This is 33 x 6 minutes, for a total exposure of 3 hours, 18 min at ISO 1600 through an 8" Newt (1000mm FL). Not a lot of color in those big elliptical galaxies.

May 10, 2011 12:59 PM Forum: Digital SLR AstroPhotography

Leo Trio

Posted By Steve Mathis
Here is one more from last week. The Leo Trio, M 65, M 66, and NGC 3628 (edge-on, with lots of dust). This is 18 x 6 min, ISO1600, taken with the same setup as the other recent posts. Thanks for looking.

Steve

June 9, 2011 11:01 PM Forum: Digital SLR AstroPhotography

M 51 with SN

Posted By Steve Mathis
I unwittingly captured the M51 SN last Wed. night (June 1). I shot this with a 6" f/4 Newt and a Nikon D50. Comments are welcome!

Steve

August 27, 2011 09:54 PM Forum: Digital SLR AstroPhotography

Jupiter with Nikon D70

Posted By Steve Mathis
This was done the old-fashioned way, except for the digital camera and the stacking. I used a 13mm Hyperion eyepiece for projection, and the "hat trick". Actually my "hat" is a 3' diameter cardboard disk with a ~90° sector cut out. The disk is attached to a ½" dowel, allowing the disk to be rotated in front of the scope to act as a shutter. If my Nikon had mirror lock-up, I wouldn't have to do this. If I had a laptop, I could get a real planetary camera. I was able to get 15 frames/minute like this, and did a few 4 minute runs. This image is a stack (Registax 5) of 21 frames from the first run of 60. ISO 400, and a "shutter" speed of something.

September 28, 2011 01:14 PM Forum: Comets

Comet Garradd on Sept. 19

Posted By Steve Mathis
Here is an image from 9/19. This was taken with a Nikon D50 through a 6" f/4 Newt + MPCC. 9 x 6 min, ISO 1600. Images stacked with DSS, using the "comet freeze" mode.

October 1, 2011 11:16 PM Forum: Digital SLR AstroPhotography

A 2 hr Pelican with 6" f/4 Newt

Posted By Steve Mathis
12 x 10min, ISO 1600 with a Modified Nikon D-50 and MPCC on a 6" f/4 Newt. RAW images were stacked with DSS, and final work was done with PSCS3. The homemade 6" scope has a Coulter mirror from the 1970's, that was bought new for $39.95.
Comments welcome.


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