Credits
NASA, ESA, Richard Ellis (Caltech) and Jean-Paul Kneib (Observatoire Midi-Pyrenees, France);Acknowledgment: NASA, A. Fruchter and the ERO Team (STScI and ST-ECF)
| About The Object | |
|---|---|
| Object Name | Abell 2218 |
| Object Description | Gravitational Lensed galaxy |
| Constellation | Draco |
| Distance | The lensed galaxy is 4 billion parsecs (13 billion light-years) away. Redshift: z=5.58 |
| About The Data | |
| Data Description | Principal Astronomers: J.-P. Kneib (Observatoire Midi-Pyrenees, France), R. Ellis and M. Santos (Caltech) and K. Kuijken (Kapteyn Institute, The Netherlands) |
| Instrument | Keck I>Low Resolution Imaging Spectrograph, HST>WFPC2, and Keck II>Echelle Spectrograph and Imager |
| Exposure Dates | 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 |
| Filters | Low Resolution Imaging Spectrograph WFPC2: F814 W (I) Echelle Spectrograph and Imager |
| About The Object | |
|---|---|
| Object Name | A name or catalog number that astronomers use to identify an astronomical object. |
| Object Description | The type of astronomical object. |
| R.A. Position | Right ascension – analogous to longitude – is one component of an object's position. |
| Dec. Position | Declination – analogous to latitude – is one component of an object's position. |
| Constellation | One of 88 recognized regions of the celestial sphere in which the object appears. |
| Distance | The physical distance from Earth to the astronomical object. Distances within our solar system are usually measured in Astronomical Units (AU). Distances between stars are usually measured in light-years. Interstellar distances can also be measured in parsecs. |
| Dimensions | The physical size of the object or the apparent angle it subtends on the sky. |
| About The Data | |
| Data Description |
|
| Instrument | The science instrument used to produce the data. |
| Exposure Dates | The date(s) that the telescope made its observations and the total exposure time. |
| Filters | The camera filters that were used in the science observations. |
| About The Image | |
| Image Credit | The primary individuals and institutions responsible for the content. |
| Publication Date | The date and time the release content became public. |
| Color Info | A brief description of the methods used to convert telescope data into the color image being presented. |
| Orientation | The rotation of the image on the sky with respect to the north pole of the celestial sphere. |
