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Great greg 2003-11-26 13:05

I calculate your exposure to have been 10 secs... If you enlarge the image and measure how far the moon moved (see the double edge at the top - I got 3.6 pixels); divide by the width of the moon (44 pix), multiply that by the number of seconds in a day (86400), the angular size of the moon (0.5 deg), and divide by 360 (degs in a circle), you find your exposure!

The blue stripe in the sky is very unusual, but great for the composition. Nice shot!

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Old 05-09-2007, 11:54 AM
rui_seabra's Avatar
rui_seabra rui_seabra is offline
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Default To greg: great math

ahhhhh... showing out the math skills, hγ!?

I would never think of doing all that... thanks, I've just learned something new!

Rui
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