<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=Content-Type content="text/html; charset=iso-8859-1">
<META content="MSHTML 6.00.2900.2180" name=GENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=#ffffff>
<DIV><FONT face=Arial size=2>Hi ,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I try to get position for spacecraft or rover to
animate a planetarium with spice.</FONT></DIV>
<DIV><FONT face=Arial size=2>I have no problem for pioneer 10 or cassini
. </FONT></DIV>
<DIV><FONT face=Arial size=2> I load
naifxxx.tls and a xxx.bsp files.</FONT></DIV>
<DIV> <FONT face=Arial size=2> I
use furnsh_c and spkezr_c functions.</FONT></DIV>
<DIV><FONT face=Arial size=2> The
positions obtained are good.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I have problem with mars rover spirit or
opportunity (mer-1 , mer-2).</FONT></DIV>
<DIV><FONT face=Arial size=2> I load naifxxx.tls and a xxx.bsp
and also xxx.tpc an xx.tf files.
<DIV> I use furnsh_c and spkezr_c
functions. </DIV>
<DIV><FONT face=Arial size=2> The observing body is the
sun.</FONT></DIV>
<DIV> The target body is mer-1/2.</DIV>
<DIV><FONT face=Arial size=2> The positions obtained are
not good ! </FONT></DIV></FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2> </FONT><FONT face=Arial
size=2>have anyone an idea of this problem or an example of use to get the good
position for rovers ??</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Damien ZINS<BR>RSA Cosmos Planetarium<BR><A
href="http://www.rsacosmos.com">http://www.rsacosmos.com</A></FONT></DIV></BODY></HTML>