The NM07 time scheduled for tonight (12/22) is pre-empted for DD01 observations of a newly discovered and well localized GRB that is nicely placed for afterglow observations. In addition, PU01 will limit its observations to obtaining a couple of g' and r' images of the primary target, 2237+0305, and will then turn over any remaining PU01 time to DD01. Diercks and/or Deutsch will observe for DD01 using SPIcam. (Alan/Eric: Please get in touch with Karen, who will be the OS first half tonight, or others at the site about which filters you want and to verify the status of SPIcam which was reported to be having tachnical problems in last night's log.) *In addition*, this message is to serve as a warning that the following dates/programs *might* be pre-empted for further observations of this GRB's afterglow depending on the results of tonight's APO observations and other developments: 12/23 NM07 12/24 NM07 12/25 JH03 12/26 UC01 All potentially affected PIs and observers for these programs should "stayed tuned" for further info. Any program losing time will be compensated to the best of our ability at a future date. UC01 is in a specially protected status as a critical thesis project observation and will only be pre-empted if the scientific justification is unusually strong. This message is being sent to apo35-grb@astro.princeton.edu, techstaff and all affected and potentially affected PIs and observers. Please note that apo35-grb can be used to communicate with a group of ARC people (listed on the APO archives web pages) who are interested in following our GRB chases. Cheers and good hunting, Ed Turner PS - This is GRB981220...just so we are all on the same page. APO APO APO APO APO Apache Point Observatory 3.5m APO APO APO APO APO This is message 13 in the apo35-grb archive. You can find APO the archive on http://www.astro.princeton.edu/APO/apo35-grb/INDEX.html APO To join/leave the list, send mail to apo35-request@astro.princeton.edu APO To post a message, mail it to apo35-grb@astro.princeton.edu APO APO APO APO APO APO APO APO APO APO APO APO APO APO APO APO APO