SUMMARY OF SEQUENCE NUMBER 890002
SUMMARY OF SEQUENCE NUMBER 890002
Title: CALIBRATION OBSERVATION OF AN EXTENDED HARD SOURCE: THE COMA CLUSTER
Observer: CALIBRATION
Subject Category: Clusters of Galaxies
Seq: 890002 ObsId: 00557
Long-term Plan bin: no LTS bin
ABSTRACT
Calibration Observation - The Coma cluster of galaxies is an extended, nearly isothermal (kT = 8 keV) source of X-rays. The extent of the Coma cluster is sufficient to completely cover all 4 detectors when observed on-axis. This source will be observed periodically by all 4 focal plane instruments throughout the AXAF mission to monitor any temperoal variations in the characteristics of the detectors. This observation is the first such measurement and needs to be carried out shortly after launch to establish a fiducial point from which subsequent observations will be compared.
TARGET SUMMARY
| TARGET NAME |
RA | DEC |
TIME |
SI |
GRAT |
TYPE |
TC |
ROLL |
PRE |
PHASE |
MULTI |
PRI |
| COMA CLUSTER |
194.950000 | 27.966667 |
10.00000 |
HRC-I |
NONE |
CAL |
yes |
no |
no |
no |
no |
5 |
IMAGES
(NOTE: RASS images currently only available for targets LTS scheduled on or after Apr-09-2000)
PARAMETERS
Obscat Parameters
