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higbyrichard
March 12, 2010, 04:57:26
I would deeply appreciate advice.

How does one calculate magnication using the DMK camera. I primarily image the Moon with a DMK 31AU through a Tak TOA 130F scope. (F /7.69 - 1000mm focal length).

The question is often asked by outsiders as to how close are we to the moon when they see the image on the laptop. I take a wild guess. There must be a way I can calculate the approximate apparent distance from the surface.

For example in this YouTube Clip I created for the local kids I guess that we are about 1200 kilometers above the surface. In truth I have no real idea which worries me!

http://www.youtube.com/watch?v=1_FfRpx-AxI

I am sure the answer will make me feel stupid but I would appreciate any advice.
Many thanks
Richard. Sydney
www.astro.chigby.com