SaratogaSkies Jim Solomon's Astropics

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December: Test shots with new scopes/mounts

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M106 (Spiral Galaxy)

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

Image Details:

Camera: Mofidied Canon Rebel XT (350D): Hutech Type I Filter Replacement
Mount: Celestron AS-GT
Scope: Celestron C8-N (8" f/5 Newtonian)
Configuration: Prime Focus
Additional Optics: Celestron/Baader Multi Purpose Coma Corrector (MPCC)
Filter: None
Effective Focal Length: 1000mm
Effective Focal Ratio: f/5
Exposure: 34 x 8min @ ISO 400
Total Exposure: 4hrs, 32min
Date: 5/8/2007 9:57:31 PM PDT (Start)
Location: Saratoga, CA, USA
Acquisition: DSLRfocus
Focus: DSLRFocus
Dithering: GADFly 1.0.5
Guiding: GuideDog via Philips ToUcam Pro II (840k) through Orion ST80 w/ Celestron 2x "Kit" Barlow

Processing:

  • IRIS: Dark subtraction, registration
  • PixInsight LE: gradient removal
  • JimP: Flat field, Kappa-Sigma Stacking, White balance, ASINH stretching
  • Photoshop: Sharpening, levels, cropping, JPG conversion

Image Description:

This is M106, a spiral galaxy in the constellation of Canis Venatici. M106 is a Seyfert Galaxy, suggesting an active galactic nucleus containing a supermassive black hole. A higher resolution image is also available. North is up.

 
Moon, Saturn, and The Twins
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:

Moon, Saturn, and The Twins

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

Image Details:

Camera: Canon Digital Rebel (300D)
Mount: None
Scope: Canon EF 28mm - 80mm f/3.5 - f/5.6 IV USM lens
Configuration: Prime Focus
Additional Optics: n/a (Prime)
Filter: None
Effective Focal Length: 80mm
Effective Focal Ratio: f/5.6
Exposure: 8 x 1 sec @ ISO 100; 3 x 1/125 sec @ ISO 100
Date: 1/23/2005, 7:36pm PST
Location: Saratoga, CA, USA
Acquisition: Manual
Focus: Manual
Dithering: None
Guiding: None

Processing:

  • IRIS: RAW Conversion, Registration, Stacking
  • Photoshop: Compositing, Levels, Image Size

Image Description:

This is a widefield shot of a 98.33% full Moon near Castor (upper left), Pollux (lower left), and Saturn (lower-right). Castor and Pollux are the two brightest stars in the constellation of Gemini, The Twins. Mouse-over the image above to see annotations and to see the outline of the Gemini constellation. This is a composite of a stack of 1" exposures for the background stars and Saturn, and a stack of 1/125" exposures of the Moon. Compositing was done in Photoshop. Zenith is up (North is roughly in the direction of the line connecting the Moon to Castor).