To: IGSStation@igscb.jpl.nasa.gov From: John Beavan Subject: [IGSSTATION-3768]: CHAT & CHTI - important message for IGS analysis centers Date: Sun, 23 May 2010 18:17:12 +1200 Message-ID: Content-type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: owner-igsstation Precedence: bulk ****************************************************************************** IGS Station Mail 24 May 10:50:14 PDT 2010 Message Number 3768 ****************************************************************************** Author: John Beavan Nacho Romero has recently pointed out that CHAT is not tracking unhealthy satellites, and he has also informed me that many analysis centers are apparently not processing CHTI. We announced several years ago that CHAT was to be replaced by CHTI situated about 20 km away, and that CHAT would probably go off the air once any of its aging equipment failed. CHTI and CHAT have now been running in parallel since 2007/345, and we can make no guarantee about the continued operation of CHAT. We encourage all analysis centers to process CHTI (as well as CHAT) in routine processing and in any reprocessing. Thank you, John -------------------------------------------------------------------------------------- Dr John Beavan, GNS Science - Te Pu Ao, 1 Fairway Drive, PO Box 30368, Lower Hutt, New Zealand Tel: +64 4 570 4641 Fax: +64 4 570 1440 Mob: 027 221 8861 Email: j.beavan@gns.cri.nz Web: www.gns.cri.nz Notice: This email and any attachments are confidential. If received in error please destroy and immediately notify us. Do not copy or disclose the contents.