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Masa has noticed a bug in gtbary in the new release; see the details in his posting PULS-49. "Due to a logic error in error handling of gtbaryUnder certain circumstances, gtbary ignores (and does not report) errors in computing geocentric and barycentric times, leaving event times not properly corrected without printing any error or warning message. " The outputs are correct if the inputs are correct, but if you run gtbary as a standalone tool you don't get any warnings if there's a problem. you come up against this bug.
Masa reports that this does not affect any of the other pulsar tools. The current workaround for gtbary is to continue to use the v9r7p1 version [or live Wiki Markup
Observation simulation
Reminder: Jim has updated gtobssim to allow it to process merged flight FT2 files. This is a great convenience for simulating as-flown pointing and livetime histories; formerly the gaps between the runs required simulations to be made run-by-run and then merged. See the Science Tools Update for October 14.
STOP PRESS There was a logic error in the code introduced in observationSim v8r2 to compute livetime information for merged FT2 files. See obs-13@jira. This is fixed in observationSim v8r3.
In v9r8 the gtorbsim tool is now the orbit/attitude simulator that derives from the Tako planning system in the FSSC. The simulation is somewhat idealized but it can make, e.g., pointed observations with earth avoidance and survey-mode observations with a user-specified rocking profile. The inputs are described in the User Workbook, although we do not have examples yet of all of the input files. The simulator was written by Giuseppe Romeo, and it is currently supported by John Vernaleo; Analia Cillis wrote the documentation.
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