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[vsnet-chat 2657] Tycho-2 is out
- Date: Mon, 7 Feb 2000 23:43:27 -0700 (MST)
- To: aavso-discussion@physics.mcmaster.ca, amastro@egroups.com, mpml@bitnik.com, vsnet-chat@kusastro.kyoto-u.ac.jp
- From: Brian Skiff <bas@lowell.edu>
- Subject: [vsnet-chat 2657] Tycho-2 is out
- Sender: owner-vsnet-chat@kusastro.kyoto-u.ac.jp
The long-awaited Tycho-2 star catalogue has been made available in the
last couple of hours via the Strasbourg catalogue server and 'Vizier' look-up
utility. The catalogue now contains 2.5 million stars and includes proper
motions based on the AC and 143 (!) other catalogues all reduced to the ICRS
system. The photometry is said to be improved, but I have not looked at it
all yet. Do note that the magnitudes are the confusing "VT" and "BT", _not_
on the standard Johnson system. The basic description and links to the data
themselves can be found at:
http://vizier.u-strasbg.fr/viz-bin/Cat?I/259
\Brian
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