> ...Meade LX-10 (8 inch), ... just the camera or eyepiece projection too... > Dont forget, Im doing this hand-tracked. ... maybe try a snapshot, > ASA 800 film @ 250th ... Using 1/250 s, 5 m blur is about 1/6 of satellite speed, so you would have to hand-track within 15% of the angular speed (or 30 deg. of correct track angle). From old thumb-rules, if memory serves me right, ASA 800 and a 1/250 could use about f/22 for a bright, well-lit object. You could probably under-expose, perhaps to f/40. This means eyepiece projection (or zoom?), and with 8" an effective F.L. of 320" or 8 m. At a range of 400 km, this gives a scale of 1:50000, so it would give about 1 mm image. Correct me if I am wrong. I don't have such equipment, and haven't done this calculation before. ----------------------------------------------------------------- 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
This archive was generated by hypermail 2b29 : Sat Oct 14 2000 - 06:12:51 PDT