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News Release Archive:

News Release 541 of 950

October 5, 2001 09:00 AM (EDT)

News Release Number: STScI-2001-32

Gravitational Lens Helps Hubble and Keck Discover Galaxy Building Block

Technical facts about this news release:

About this Object 
Object Name: Abell 2218
Object Description: Gravitational Lens
Position (J2000): R.A. 16h 35m 56.00s
Dec. +66° 12' 00.0''
Constellation: Draco
Distances: The lensed galaxy is 4 billion parsecs (13 billion light-years) away. The lensing cluster of galaxies, (Abell 2218) is 600 million parsecs (2 billion light-years) away, along the same line of sight.
About the Data 
Telescope:
Keck I
HST
Keck II
Instrument:
Low Resolution Imaging Spectrograph
WFPC2 - F814 W (I)
Echelle Spectrograph and Imager
Exposure Dates:
April 23, 2001
January 11 - 12, 2000
May 21, 2001
Exposure Time:
0.6 hours
3.3 hours
1.1 hours
Principal Astronomers:

J.-P. Kneib (Observatoire Midi-Pyrenees, France), R. Ellis and M. Santos
(Caltech) and K. Kuijken (Kapteyn Institute, The Netherlands)

About this Release 
Image Credit: NASA, ESA, R. Ellis (Caltech) and J.-P. Kneib (Observatoire Midi-Pyrenees)
Acknowledgment: NASA, ESA, A. Fruchter and the ERO Team (STScI, ST-ECF)
Release Date: October 5, 2001 9:00 a.m. (EDT)
Orientation: Gravitational Lens Helps Hubble and Keck Discover Galaxy Building Block