ASCA Sequence 75045010 Header Page
This page gives a basic description of this sequence
and references to more detailed information.
The following information is also available:
Observation Information
- Object: NGC 4639
- Nominal Pointing (degrees)
- R.A.=190.805 Dec.=13.283
- Lii=294.627 Bii=76.022
- Observation Date: December 23, 1997
- Duration: 80.2 kiloseconds
(with 4 kiloseconds of telemetry gaps)
- Approximate SIS Exposure:
15 kiloseconds
(approximately 5% with telemetry saturated)
- Approximate GIS Exposure:
40.7 kiloseconds
Processing Information
- Sequence Version: 002
- Processing Version: 7.3.8
(Revision 2)
- FTOOLS Version: 4.2.b
- Processing Date: December 28, 1999
- GIS Secular Gain Calibration Date: October 7, 1999
- GIS Gain Map Calibration Date: April 1, 1999
- SIS CTI Calibration Date: October 3, 1997
US Principal Investigator
DR. LUIS C. HO
ASTRONOMY
HARVARD-SMITHSONIAN CENTER FOR ASTROPHYSICS
60 GARDEN STREET, MS-42
CAMBRIDGE, MA 02138
USA
LHO@CFA.HARVARD.EDU
Japan Principal Investigator
NONE