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Home»Personal Astrophoto Galleries»John McDonald

Uploaded 18-Jan-11
Taken 17-Jan-11
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Photo Info
Dimensions1250 x 1000
Original file size150 KB
Image typeJPEG
Color spaceAdobe RGB (1998)
Date taken17-Jan-11 22:41
Date modified18-Jan-11 10:21
Shooting Conditions
Camera makeCanon
Camera modelCanon EOS REBEL T1i
Focal length20 mm
Max lens aperturef/5.7
Exposure30s at f/5.6
FlashNot fired, compulsory mode
Exposure bias0 EV
Exposure modeManual
Exposure prog.Manual
ISO speedISO 400
Metering modePattern
Moon Halo

Moon Halo

This image shows a halo around the moon observed from my back yard in Victoria BC at 10:40 PM PST on Jan 17, 2011. Halos like this originate when the light of the moon is bent passing through hexagonal ice crystals.
Details
Tripod mounted T1i camera with a cobbled up fisheye lens I made from a Sigma 10-20mm lens with a fish eye adapter from a point and shoot camera added.
Exposures of 4, 8, 15 and 30 seconds at ISO 400 and f/5.6 were combined in Photoshop.
© 2011 W J McDonald
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