[Spice_discussion] IK question

[Boris Semenov]

Hello Aimee --

Rosetta data archiving team working together with NAIF have already put 
made and released for review a draft version of the RPC instrument 
kernel file proving some data for the IES (since it is a part of RPC 
experiment). This IK is available on the ESTEC Rosetta server:

ftp://gorilla.estec.esa.int/pub/projects/rosetta/data/spice/kernels/ik/ROS_RPC_V11.TI

and on the NAIF server:

ftp://naif.jpl.nasa.gov/pub/naif/ROSETTA/kernels/ik/ROS_RPC_V11.TI

It may be best if you start with reviewing this IK and then will work 
directly with Jorge Diaz of ESTEC (jdiaz at rssd.esa.int) and me to modify 
and/or augment it with geometry information needed for processing IES data.

Sincerely,
Boris Semenov.

Aimee Mostella wrote:
> Hi, 
> 
> I'm creating an instrument kernel for the IES instrument on the Rosetta 
> spacecraft.  It is similar to the PEPE instrument on Deep Space 1.  I 
> read the SPICE instrument kernel tutorial which describes how to write 
> the IK such that the data could be accessed through the getfov 
> function.  However, because of the design of the IES instrument, this 
> would result in a rectangular shaped fov with a boresight vector and 
> only two boundary vectors instead of four.  This is because the 
> rectangular instrument fov wraps around to form a cylinder so that the 
> two upper boundary vectors are equivalent and the two lower boundary 
> vectors are also equivalent.  I was looking at the PEPE IK and noticed 
> that it was written such that the boundaries of each bin are defined by 
> the respective bin id, a bin lower boundary and a bin upper boundary.  
> This seems much more appropriate for the IES instrument.  Which one is 
> the correct format for the IES instrument kernel?  Also, should the 
> vectors describing the fov be in the IES frame?  
> 
> Thanks
> 
> 
> ~~~~~~~~~~~~~~~~~~~~~~~
> 
> Aimee Mostella 
> 
> Research Analyst
> 
> Southwest Research Institute
> 
> Space Science Division
> 
> (210) 522-6735
> 
> 
> 
> ------------------------------------------------------------------------
> 
> _______________________________________________
> Spice_discussion mailing list
> Spice_discussion at naif.jpl.nasa.gov
> http://naif.jpl.nasa.gov/mailman/listinfo/spice_discussion