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Re: VENUS, MARS, MOON ... and upcoming Camera doubleLunars ?
From: Peter Monta
Date: 2015 Feb 22, 21:48 -0800
From: Peter Monta
Date: 2015 Feb 22, 21:48 -0800
Hi Greg,
Measuring your image Moon diameter (Earth shine) directly on my laptop by tape measure resulted in an observed Mars lunar distance of 1° 22.5' far limb and Venus lunar distance of 1° 57.2' far limb. Using Frank's lunar calculator had a 0.3' error for Mars and a 2' error for Venus if Sunnyvale is used as the place of observation at 18:00:00 PDT 2/20/2015. In the ballpark I hope. Did you note the exact time of the snap ?
Hm, that's not too bad for Mars, but in these snapshots Venus is quite saturated and probably a little lopsided, so that may explain part of the 2' error. Let me locate one of the images that's more suitable for measurement.
Cheers,
Peter
