96-29F: First position is mid point of tether but second is that of Ralph. I had hoped to get several hours' sleep between the evening and morning sessions but it wasn't to be. When observing TiPS I noticed that the tether seemed to subtend an unusually large angle. Lying in bed I was puzzling over this and wondering where in the sky the tether would appear longest. Assuming a circular orbit and a vertical tether I deduced that the apparent length is a function of elevation only but I could not puzzle out the mathematics to find this elevation. I guess it to be around 40 degrees. I then wondered if the elevation would be the same if TiPs was at a different height and concluded that in a lower orbit the tether would be nearer to perpendicular to the line of sight for a given elevation so the elevation for maximum tether length would not be the same but probably lower. Can anyone help me with this problem please? I mean with the maths - I'm not seeking suggestions for what else I should get up to in bed to take my mind off TiPS. 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12015821 +33410 2 5 +6 S 9107605201803101604510290 01 12040901 +17206 1 5 +6 S 9107604201803101604515484 01 12045252 +09522 1 5 +5 S 7711204201803101604550409 01 12060415 +21291 2 5 +7 S 9706401201803101604562693 01 12090945 -14132 1 5 +5 S 7609101201803101604575343 01 12042400 +24181 1 5 +6 S 7609101201803101604583274 01 12033370 +37521 2 5 +6 S 7609101201803101605000600 01 12002665 +56132 1 5 +7 S 7711201201803101605053971 01 12043876 +08077 2 5 +7 S 7711201201803101605063231 01 12052962 +29118 1 5 +7 S 7711201201803101605075278 01 12092074 +61230 1 5 +7 S 7711201201803101605085622 01 12124281 +57023 1 5 +8 S 7504301201803101605145366 01 12132037 +40083 1 5 +5 +7 I 7504301201803101605152753 01 12140208 +46020 1 5 +6 +7 I 999 -- Peter Wakelin COSPAR 2018 GUNDLETON, Lat 51.0945N Long 1.1188W 124m ----------------------------------------------------------------- To unsubscribe from SeeSat-L, send a message with 'unsubscribe' in the SUBJECT to SeeSat-L-request@satobs.org List archived at 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This archive was generated by hypermail 2b29 : Thu Oct 16 2003 - 09:27:39 EDT