SUMMARY OF SEQUENCE NUMBER 780148
SUMMARY OF SEQUENCE NUMBER 780148
Title: IN FLIGHT CALIBRATION OF THE HETGS EFFECTIVE AREA AND CROSS DISPERSION PROFILE
Observer: Marshall
Subject Category: Active Galaxies and Quasars
Seq: 780148 ObsId: 01198
Long-term Plan bin: no LTS bin
ABSTRACT
The targets 3C 273 and Cyg X-2 are well-studied continuum sources that we propose to observe as calibration targets. The QSR 3C 273 has been observed for calibration purposes by XTE, SAX and ASCA simultaneously, so a cross-calibration with these missions would be possible if any of them can be available when AXAF observes 3C 273. In the case of Cyg X-2, its spectrum is relatively well known and it is known to be point-like, so that cross dispersion profiles can be measured.
TARGET SUMMARY
| TARGET NAME |
RA | DEC |
TIME |
SI |
GRAT |
TYPE |
TC |
ROLL |
PRE |
PHASE |
MULTI |
PRI |
| 3C 273 |
187.277917 | 2.052389 |
40.00000 |
ACIS-S |
LETG |
CAL |
yes |
no |
no |
no |
no |
4 |
IMAGES
(NOTE: RASS images currently only available for targets LTS scheduled on or after Apr-09-2000)
PARAMETERS
Obscat Parameters
