I do like Scott - for binocular and one-power search. For telescope, I have once or twice computed a point along the track, where the displacement with time matches one of the fine pointing speeds of the scope controller, sufficiently close during about 20 min for a 1000 km high satellite. Theoretically, SatTrack/LXSAT allows that via a parameter that can be varied during observation +-999 s. But I have recorded the positions displayed, and found the track follows the same RA/Dec path despite Earth's rotation ! Likewise for Meade Autostar built-in software, which allows you to pre-select the minimum altitude, then sit and wait at this starting point until the satellite appears, and start tracking then. Furthermore I have noticed cross-track computation errors of a few degrees ! NB This is with software updated 2-3 years ago. /Björn 2011/10/21 Scott Tilley <sthed475@telus.net>: > ... > > I presently do this by creating a series of orbital elements with mean > anomaly values of various 'steps', like say 5, 10, 25 degrees... Easy > enough to do with a C script I wrote, but it would be nice if software > such as Heavensat could simply display this from one elset as a > parameter an observer could set... _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-l
This archive was generated by hypermail 2b29 : Fri Oct 21 2011 - 08:11:24 UTC