[Spice_discussion] search an example of rover with spice

[RSAI Damien Zins Sorbiers]

Hi ,

I try to get position for spacecraft or rover to animate a planetarium with spice.
I have  no problem for pioneer 10 or cassini . 
        I load naifxxx.tls and a xxx.bsp files.
        I use  furnsh_c and spkezr_c functions.
        The positions obtained are good.

I have problem with mars rover spirit or opportunity (mer-1 , mer-2).
    I load naifxxx.tls and a xxx.bsp and also xxx.tpc an xx.tf files. 
    I use  furnsh_c and spkezr_c functions. 
    The observing body is the sun.
    The target body is mer-1/2.
    The positions obtained are not good ! 

    have anyone an idea of this problem or an example of use to get the good position for rovers  ??


Damien ZINS
RSA Cosmos Planetarium
http://www.rsacosmos.com
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