SaratogaSkies Jim Solomon's Astropics


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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


  • 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.