Annular

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14. Annular Eclipse, June 20, 2012

Distance: Sun 149,600,000 km; Moon 362,570 km
App. Magnitude: -26.7 (Sun, uneclipsed)
App. Dimensions: ~32' (cf. telescope field of view 119')

Notes: According to Wikipedia this was the first annular eclipse in the Continental U.S. since May 10, 1994. The eclipse occurred about 6:30 pm and lasted less than 7 min. The alignment of the Sun and Moon is off center because Nevada City lies on the southern edge of the viewing path. Does that slight asymmetry make it a little more interesting? In the lower left quadrant of the ring, there appears to be a sunspot that might otherwise have been invisible. A friend with sharp eyes claims to be able to see the profile of mountains on the rim of the Moon. Try zooming in.

A solar filter that fits onto the front of the scope is necessary to prevent overheating and damage to the scope and camera. Zoom in/out with ⌘↑(+/-) (Mac), ctrl (+/-) (PC).

Location: Nevada City, courtesy Alan and Lynette James, Judy Tartaglia and Sandy
Date: May 20, 2012
Scope: Stellarvue 80ED
Mount: CGEM
Guide scope: none
Guide camera: none
Guide program: tracking by mount
Camera: Canon T1i, IR filter mod by Hap Griffin
ISO: 100
Exposures: 1 at 1/320 sec each, darks: DNA, biases: DNA, flats: DNA
Processing software: Nebulosity
Processing: demosaic and square

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