Deep fields & lensing

Gravitational Lens Helps Hubble and Keck Discover Galaxy Building Block

October 5, 2001 · NASA · Abell 2218 · Draco

Zoom to full resolution Original on NASA ↗

About the data

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

Facts

Object: Abell 2218
Constellation: Draco
Distance: The lensed galaxy is 4 billion parsecs (13 billion light-years) away. Redshift…
Released: October 5, 2001
Instrument: Keck I>Low Resolution Imaging Spectrograph, HST>WFPC2, and…
Filters: Low Resolution Imaging Spectrograph WFPC2: F814 W (I) Echelle Spectrograph and Imager
Observed: April 23, 2001, Exposure Time: 0.6 hours (Keck I), January 11 - 12, 2000, Exposure Time: 3.3 hours (HST), and May 21, 2001, Exposure Time: 1.1 hours
Image size: 293 × 293 px
Category: Deep fields & lensing
Source: NASA

Credit

NASA , ESA , Richard Ellis (Caltech) and Jean-Paul Kneib (Observatoire Midi-Pyrenees, France); Acknowledgment: NASA , A. Fruchter and the ERO Team ( STScI and…