SaratogaSkies Jim Solomon's Astropics

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M65 (Part of the Leo Triplet)

Image Details:

Camera: Canon Digital Rebel (300D)
Mount: Celestron AS-GT
Scope: Celestron C8-N (8" f/5 Newtonian)
Configuration: Prime Focus
Additional Optics: n/a (Prime)
Filter: None
Effective Focal Length: 100mm
Effective Focal Ratio: f/5
Exposure: ~14min @ ISO 800 and 1600
Total Exposure: 0hrs, 14min
Date: 5/8/2004 11:20:54 PM PDT (start)
Location: Saratoga, CA, USA
Acquisition: Manual
Focus: DSLRFocus
Dithering: None
Guiding: None

Processing:

  • IRIS: Dark subtraction, registration, and stacking
  • JimP: White balance, ASINH stretching
  • Neat Image: noise reduction
  • Photoshop: Levels, cropping, scale, JPG conversion

Image Description:

This was an attempt at capturing the Leo Triplet. By confusing my directions I managed to frame this wrong and capture only M65 (right) and M66 (left). NGC 3628, the third in the Triplet, will have to wait for another day. North is up, though I really wish I would have realized this simple fact at the time. D'oh!!!!

Update 3/18/2005: This is a reprocessed stack of a hodgepodge of frames and exposures ranging from 30sec to 2min at ISO 800 and 1600. Amazingly, IRIS was able to scale, translate, and rotate all of these frames in order to align them, even though their intersection was only a tiny fraction of the entire sensor's range. Way to go IRIS! Obviously, this image needs much more exposure to bring out the faint spiral arms of these galaxies. And, since the framing was all messed up, most of the frames were captured in the "severe coma" portion of the field, which is why the stars show significant signs of coma. But as my first DSO image with the 300D, this ain't too shabby!

 
Abell 2199 / NGC 6166 (Galaxy Cluster)
SaratogaSkies Jim Solomon's Astropics

Search

Latest news

December: Test shots with new scopes/mounts

Dec 21: TMB 80/480 Arrives!

Dec 3: AP1200 Arrives!

Nov 30: TMB 152/1200 Arrives!

Links:

Abell 2199 / NGC 6166 (Galaxy Cluster)

Mouse-over to see annotations. (Requires Javascript) Click to see high-res version.

Image Details:

Camera: Canon Digital Rebel (300D)
Mount: Celestron AS-GT
Scope: Celestron C8-N (8" f/5 Newtonian)
Configuration: Other
Additional Optics: Celestron/Baader Multi Purpose Coma Corrector (MPCC)
Filter: None
Effective Focal Length: 1000mm
Effective Focal Ratio: f/5
Exposure: 40 x 4min @ ISO 1600
Total Exposure: 2hrs, 40min
Date: 7/11/2005 10:30:16 PM PDT (start)
Location: Saratoga, CA, USA
Acquisition: DSLRfocus
Focus: DSLRFocus
Guiding: GuideDog via Philips ToUcam Pro II (840k) through Orion ST80 w/ Celestron 2x "Kit" Barlow

Processing:

  • IRIS: Dark subtraction, registration, gradient removal
  • JimP: Flat field, Kappa-Sigma Stacking, White balance, ASINH stretching
  • Photoshop: Levels, cropping, JPG conversion
  • Neat Image: Noise reduction

Image Description:

This is a portion of Abell 2199, a rich cluster of galaxies in the constellation of Hercules. The largest galaxy in the center of the image is NGC 6166. Move your mouse over the above image to see annotations for just a small handful of the galaxies in this field, and then click on the image to get the full frame. There are an astounding number of galaxies in this field. A fellow imager once referred to one of my long exposures of a galaxy-rich region as the "Solomon Deep Field", a moniker I kinda dig. So, consider this part of the Solomon Deep Field Survey. <grin> The above is a full-resolution crop of the full-size frame. North is up.