SaratogaSkies Jim Solomon's Astropics


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Moon and Venus

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: Orion ED80 (80mm f/7.5 APO Refractor)
Configuration: Negative Projection (Barlowed)
Additional Optics: William Optics 2" APO 0.8x Reducer/Field Flattener
Filter: None
Effective Focal Length: 480mm
Effective Focal Ratio: f/6
Exposure: 62 x 1/1000s @ ISO 100 (Still); 106 x [ibid.] (Animation)
Total Exposure: 0hrs, 0min
Date: 5/19/2007 8:11:11 PM PDT (Start)
Location: Saratoga, CA, USA
Acquisition: DSLRfocus
Focus: DSLRFocus
Dithering: None
Guiding: GuideDog via Philips ToUcam Pro II (840k) through Orion ST80 w/ Celestron 2x "Kit" Barlow


  • IRIS: Dark subtraction, Registration, Stacking, White Balance, Gamma stretch
  • JimP: Flat field, Pattern-noise removal
  • Photoshop: Sharpening, levels, cropping, JPG conversion
  • Mencoder: AVI creation

Image Description:

This is a conjunction of the Moon and Venus, separated by a degree or so during twilight on the night of May 19, 2007. The above (still) image is a stack of 62 exposures.

Far more interesting are the following animations, each consisting of 106 exposures:

A higher resolution image is also available. Zenith is up (north can be seen by mousing-over the image).