Date: Tue, 27 Jan 2004 11:25:05 -0800 (PST) Subject: SIRTF: Last major web release +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ You are subscribed to sirtf-astro. To unsubscribe please send an email to majordomo@ipac.caltech.edu with "unsubscribe sirtf-astro " where your_email@address is the email address at which you receive this mailing. +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Contents of mailing: 1) New web releases +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Greetings Spitzer Fans - We have now released the following on the website: (*) New version of the Observation Planning Cookbook, with chapters on pointed deep imaging, spectroscopy, imaging survey, and imaging moving targets. http://ssc.spitzer.caltech.edu/documents/cookbook/ (*) New ephemeris list http://ssc.spitzer.caltech.edu/propkit/spot/ephem.html (*) New OPZ definitions -- with specific implications for current Spitzer Observers! For almost all of our observers this change will have no impact on your observation planning. The only result will be slightly smaller visibility windows. The Spitzer operational pointing zone (OPZ) has just been reduced by 2.5 degrees in the direction towards to sun. Spitzer will now point the boresight no more than 82.5 degrees toward the sun and 120 degrees away from the sun. This change is in preparation for increasing the maximum slew rates used by Observatory, which will will give us faster slews and therefore more time to integrate on the sky. The slew rate change won't happen until later this winter. The OPZ change should only really affect you as an observer if you have a tightly time constrained observation. This is most likely the case with a moving target. If you have been planning timing constraints near the edges of the visibility windows for your target please check the visibility windows for your AORs again using the most recent (and most recently auto-updated) copy of SPOT (e.g. the S9.0.4 version of AIRE which was deployed 1/23/04). (*) Small bug fix in IRS portion of PET (typo in one of the sensitivities -- 30s, SH, 13 microns.) and, of course (*) New and Updated FAQs http://ssc.spitzer.caltech.edu/faq/ This constitutes the last of the major updates expected to our website between now and the proposal due date, 14 Feb 2004. Any additional changes will be documented (along with the other most recent changes) on the "news" page (http://ssc.spitzer.caltech.edu/news/), and if they are significant changes, we'll send out email. Good luck with your proposals! cheers, Spitzer Observer Support