Folks:

This is to let you know that the second step in the implementation of SunSPICE has taken place. I've now updated the STEREO SPICE routines in SolarSoft ($SSW/stereo/gen/idl/spice) to use SunSPICE for all calculations. They are no longer separate systems running in parallel. This was done on the understanding that sufficient time has passed for the SunSPICE package to propagate to all sites. If any sites still need to add it to their SolarSoft installation, the instructions can be found at

https://stereo-ssc.nascom.nasa.gov/sunspice.shtml

Bill Thompson

On 8/22/16 2:28 PM, Thompson, William T. (GSFC-671.0)[ADNET SYSTEMS INC] wrote:

Folks:

Please forgive me if you get this message more than once. I want to make sure this gets out to everybody who needs to know.

The STEREO mission uses a particular kind of ephemeris file known as SPICE for the orbit and attitude information, and there are routines in the SolarSoft "$SSW/stereo/gen" tree for handling the files. The upcoming Solar Orbiter and Solar Probe Plus missions will also use the SPICE ephemeris system, so the STEREO software for handling SPICE files has been migrated to a separate package called "SunSPICE". This should be transparent to most users, but people who are using SolarSoft under Windows will need to install the SunSPICE package on their machines. This is explained on this website:

http://stereo-ssc.nascom.nasa.gov/sunspice.shtml

Please let me know if you have any problems.

Bill Thompson