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Operations CXO Status Report

Friday 28 January 2005 9.00am EST

Loads were resumed at 1:45am on Jan 23 following the major solar event that stopped loads on Jan 16. A total of 363Ks of science was lost due to the event, the largest impact for a solar event so far in the mission. Target observations impacted by the event will be rescheduled in a later load.

Chandra passed through the final eclipses of the 2005 winter season on Jan 22 and Jan 25 with nominal power and thermal performance. A real-time procedure was completed on Jan 27 to disable SCS 29 due to the end of the eclipse season.

A Chandra image release was made on Jan 25 describing observations of the galaxy UGC 6697, located in the galaxy cluster Abell 1367. The combined Chandra and optical image shows features that suggest that the cluster gas density is at just the right value to trigger star formation by compressing clouds of cool gas in the galaxy. For details see: http://chandra.harvard.edu/photo/2005/u6697/

The schedule of targets for last week following resumption of loads and for next week is shown below, and includes an observation of SDSS J0840+5624 coordinated with ground observatories.

------------------------------------------
RX J0720.4-3125        HRC-S/LETG   Jan 23
M87                    ACIS-S
MACSJ1006.9+3200       ACIS-I       Jan 24
The Crab Nebula        ACIS-S/HETG
SDSS J0002+2550        ACIS-S
RCW103                 ACIS-I
Radiation Belts
RGBJ2318+3048          ACIS-S       Jan 25
MS30.7                 ACIS-S
V1118 Ori              ACIS-S       Jan 26
Abell 4059             ACIS-S
Radiation Belts                     Jan 27
M31                    HRC-I        Jan 28
cl0956+4107            ACIS-I
M31                    HRC-I
SDSS J091836.46+59     ACIS-S       Jan 29
HCG 40                 ACIS-S
NGC 5408 ULX           ACIS-S
NGC2986                ACIS-S
HCG 40                 ACIS-S
Radiation Belts
1E 0035.4-7230         ACIS-S       Jan 30
PKS 1055+201           ACIS-S
V1187 Sco              HRC-S/LETG   Jan 31
M87                    ACIS-I
Radiation Belts                     Feb 1
HZ43                   HRC-S/LETG   Feb 2
Betelgeuse             ACIS-I
Betelgeuse             ACIS-S
SDSS J011651.54-10     ACIS-S
Betelgeuse             HRC-I
Betelgeuse (4 obs)     HRC-S
NGC3078                ACIS-I
A1413                  ACIS-I
NGC4278                ACIS-S       Feb 3
SDSS J0840+5624        ACIS-S
NGC2340                ACIS-S
NGC2329                ACIS-I       Feb 4
Radiation Belts
LBQS 1203+1530         ACIS-S       Feb 5
Abell 1240             ACIS-I
NGC 3412               ACIS-S       Feb 6
IGR J00291+5934        ACIS-S
3EG J2020+4017         ACIS-I

------------------------------------------

All spacecraft subsystems continued to support nominal operations.

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