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News Release Archive:

News Release 525 of 951

April 24, 2002 01:00 PM (EDT)

News Release Number: STScI-2002-10

Hubble Uncovers Oldest "Clocks" in Space to Read Age of Universe

Technical facts about this news release:

About the Object
Object Name: M4 (NGC 6121)
Object Description: Globular Cluster
Position (J2000): R.A. 16h 23m 35.4s
Dec. -26° 31' 31.9"
Constellation: Scorpius
Distance: M4 is roughly 5,600 light-years from the Earth.
About the 1995 HST Data
Instrument: WFPC2
Exposure Date(s): February - March 1995
Exposure Time: 1.2 days
Principal Astronomers: H. Richer (UBC), D. Vandenberg (U.Victoria), P. Stetson (DAO), M. Bolte (UCSC/Lick Obs.), C. Pryor (Rutgers U.), R. Mcclure (DAO), J. Hesser (DAO), G. Fahlman (CFHT), H. Bond (STScI), R. Bell (U. Maryland)
Filters: F336W (B), F555W (V), F814W (I)
About the 2001 HST Data
Instrument: WFPC2; STIS (MULTIACCUM)
Exposure Date(s): January - April 2001
Exposure Time: 7.4 days
Principal Astronomers: H. Richer (U. British Columbia), G. Fahlman (CFHT), B. Gibson (U. Colorado), B. Hansen (Princeton U.), R. Ibata (ESO), M. Limongi (Osservatorio Astronomico di Roma), M. Rich (UCLA), M. Shara (AMNH), P. Stetson (DAO)
Filters: F336W (B), F555W (V), F814W (I)
About the Image
Image Credit: NASA and H. Richer (U. British Columbia)
Release Date: April 24, 2002