Anthony, > Any thoughts about what kind of lens to use? The image area for 35 mm film is 24 by 36 mm in size. To determine the size of the moon on that frame use the following equation. fl x 0.075 x 0.5. The fl = the focal length of the lens you use while the 0.5 is the diameter of the moon in degrees. To determine the size of the moon on a print, estimate the magnification of the print (i.e. how many times the film image was blown up) then multiply that by the previous figure you came up with. You will find that the moon, let alone the ISS shot even with a 300 mm lens is disappointingly small! Good luck with anything shorter than 1000 mm! Tom Iowa USA ----- Original Message ----- From: "Anthony Ayiomamitis" <anthony@perseus.gr> To: <SeeSat-L@blackadder.lmsal.com> Sent: Wednesday, July 25, 2001 4:09 PM Subject: Very close call tomorrow night ----------------------------------------------------------------- Unsubscribe from SeeSat-L by sending a message with 'unsubscribe' in the SUBJECT to SeeSat-L-request@lists.satellite.eu.org http://www2.satellite.eu.org/seesat/seesatindex.html
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