THE AMERICAN ASSOCIATION OF VARIABLE STAR OBSERVERS
           25 Birch Street, Cambridge, MA 02138 USA
                      aavso@aavso.org
         Tel. 617-354-0484       Fax 617-354-0665

AAVSO ALERT NOTICE 340 Correction  (September 1, 2006)

Re: REQUEST TO MONITOR 1744-06 RS OPHIUCHI FOR MULTIWAVELENGTH CAMPAIGN

Object: 1744-06 RS OPH

Coordinates: R.A. 17h 50m 13.202s Dec. -06o 42' 28.48" (2000.0)

In AAVSO Alert Notice 340, observations of RS Oph were requested by Dr. Mark Wagner an colleagues in support of multiwavelength observations to be made with the Chandra, Spitzer, and Swift satellites. I stated that the times of Swift observations were not available but that the satellite would be observing RS Oph about once a week. This frequency was not correct.

Dr. Julian Osborne, University of Leicester and Swift team lead, has informed me that Swift will be observing RS Oph every 14 days, as it has done since July, until the observing window closes on the star in late October. Here is the schedule of future Swift observation dates for RS Oph (subject to change by a day or so, depending on GRBs and other planning considerations) provided by Dr. Osborne:

Fri Sep 01   10 ksec
Fri Sep 15   10 ksec
Fri Sep 29   10 ksec
Fri Oct 13   10 ksec
Fri Oct 27   10 ksec

Alert Notice 340 requested nightly monitoring throughout September and concentrated observations on the Chandra and Spitzer observation dates and times. Please continue your nightly observations until RS Oph is no longer observable for the season. Also, CCD observers are requested to carry out time series observations (as specified in Alert Notice 340) on the Swift observing dates through October.

Many thanks, and good observing!

Elizabeth O. Waagen
Senior Technical Assistant

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