Thanks, I am working on adding the track feature. I have some ideas but I am not very successful so far. To produce an accurate track, I have to take care of a lot more variables such as refraction, airmass, temperature, oblateness and a few more. Fun to play with, sometimes! Denis Thomas Fly wrote: > Thanks Denis- indeed most programs that are capable of searching for transits > are observer-oriented, and so don't produce ground tracks. > > The angular size of Venus on June 8 will be about 58", and for a 63° elevation > transit of Venus, the 73 meter width of the main solar panels corresponds to > about 37" (if oriented perpendicular to the line of sight, as Mike Tyrrell and > Phil Masding's ISS VRML simulator suggests may nearly be the case, at least in > some places), or about 2/3 the size of Venus. > > Your results therefore match mine basically to the size of the ISS itself, which > means that "improved" accuracy (except for using accurate values for the local > elevation above sea-level) may be quite pointless, since it's unlikely that the > TLE available on June 7 will be able to locate the ISS's center of mass to > better than 73 meters- or even anything particularly close to 73 meters... > > I'll pass along the link to your program, for anyone that may be interested: > http://www3.telus.net/public/boucherd/main.htm > > ------------------------------------------------------------------------- > Subscribe/Unsubscribe info, Frequently Asked Questions, SeeSat-L archive: > http://www.satobs.org/seesat/seesatindex.html > > ------------------------------------------------------------------------- Subscribe/Unsubscribe info, Frequently Asked Questions, SeeSat-L archive: http://www.satobs.org/seesat/seesatindex.html
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