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Chandra Cool Targets (CCT)

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Chandra Cool Targets (CCTs)

The Chandra X-ray Observatory (CXO) is in a highly elliptical orbit that enables high observing efficiency and flexible pointing (avoiding the Sun, Moon, Earth and anti-sun direction). However, there are significant restrictions in the durations of observations at many solar pitch angles (i.e., angles between viewing directions and the direction to the sun). These restrictions are necessary to avoid overheating (or excessive cooling) of various observatory sub-systems.

In October 2018 the CXC issued a white paper call for lists of astrophysical objects, Cool Chandra Targets (CCTs) (formerly called Cool Attitude Targets (CATs)) that can be included in the schedule to provide spacecraft cooling. CCTs are intended to produce scientifically useful data while the observatory is cooling (i.e. the observatory will never be pointed at blank sky to cool off). The mission planning team started using CCTs for spacecraft cooling in December 2018. CCT data does not have associated proprietary time.

A list of the approved CCT programs, including the PI names, titles and abstracts can be found here.

Observations Between 12/21/2018 and 10/15/2019
Obsid Target Inst Time Proposal
22040 2MASXJ06411806+32493 ACIS-S 10 C-BASS: A Chandra Legacy Survey of AGN at the Highest Spatial Resolutions
22039 SWIFT J063107.4+1127 ACIS-I 10 C-BASS: A Chandra Legacy Survey of AGN at the Highest Spatial Resolutions
22038 LEDA136513 ACIS-S 10 C-BASS: A Chandra Legacy Survey of AGN at the Highest Spatial Resolutions
22036 PKS0528+134 ACIS-S 10 C-BASS: A Chandra Legacy Survey of AGN at the Highest Spatial Resolutions
22037 2MASXJ05325752+1345092 ACIS-S 10 C-BASS: A Chandra Legacy Survey of AGN at the Highest Spatial Resolutions
22041 UGC3601 ACIS-S 10 C-BASS: A Chandra Legacy Survey of AGN at the Highest Spatial Resolutions
22058 PSRB0656p14_s7 ACIS-S 20 Chandra-NuSTAR synergy in the NuSTAR serendipitous survey
22056 SDSSJ085051.97+083026.6 ACIS-S 34 Calibration of the quasar Hubble diagram with z <= 0.7 quasars as CATs
22059 2MFGC13496_s1 ACIS-S 10 Chandra-NuSTAR synergy in the NuSTAR serendipitous survey
22057 UGC 10683 NED02 ACIS-S 10 C-BASS: A Chandra Legacy Survey of AGN at the Highest Spatial Resolutions
22069 1RXS J174645.6+131844 ACIS-S 10 C-BASS: A Chandra Legacy Survey of AGN at the Highest Spatial Resolutions
22067 SDSSJ084339.24+053125.2 ACIS-S 25 Calibration of the quasar Hubble diagram with z <= 0.7 quasars as CATs
22068 HE0103-3447 ACIS-S 10 C-BASS: A Chandra Legacy Survey of AGN at the Highest Spatial Resolutions
22066 SDSSJ084437.69+051538.8 ACIS-S 10 Calibration of the quasar Hubble diagram with z <= 0.7 quasars as CATs
22089 UGC4211 ACIS-S 10 C-BASS: A Chandra Legacy Survey of AGN at the Highest Spatial Resolutions
22090 Z31-72 ACIS-S 10 C-BASS: A Chandra Legacy Survey of AGN at the Highest Spatial Resolutions
22091 SDSSJ084205.57+075925.5 ACIS-S 10 C-BASS: A Chandra Legacy Survey of AGN at the Highest Spatial Resolutions
22088 SDSSJ081331.13+040949.4 ACIS-S 27 Calibration of the quasar Hubble diagram with z <= 0.7 quasars as CATs
22117 PSRJ1023p0038_s2 ACIS-S 20 Chandra-NuSTAR synergy in the NuSTAR serendipitous survey
22114 SDSSJ103712.55+015444.0 ACIS-S 19 Calibration of the quasar Hubble diagram with z <= 0.7 quasars as CATs
22115 CGMW5-04382 ACIS-S 10 C-BASS: A Chandra Legacy Survey of AGN at the Highest Spatial Resolutions
22116 2XMM J185348.4-010229 ACIS-S 10 C-BASS: A Chandra Legacy Survey of AGN at the Highest Spatial Resolutions
22119 1E1841m045_s2 ACIS-S 10 Chandra-NuSTAR synergy in the NuSTAR serendipitous survey
22118 Mrk417_s2 ACIS-S 10 Chandra-NuSTAR synergy in the NuSTAR serendipitous survey
22132 IC0588_s3 ACIS-S 10 Chandra-NuSTAR synergy in the NuSTAR serendipitous survey
22133 IC0588_s1 ACIS-S 10 Chandra-NuSTAR synergy in the NuSTAR serendipitous survey
22131 PMN_J0948p0022_s3 ACIS-S 20 Chandra-NuSTAR synergy in the NuSTAR serendipitous survey
22145 2HWC_J1928p178_s1 ACIS-S 19 Chandra-NuSTAR synergy in the NuSTAR serendipitous survey
22169 RMJ135424.7-010247.8 ACIS-I 10 A random sub-sample of lambda=25-80 redMaPPer clusters
22170 B2.2 2104+24 ACIS-S 16 X-Ray surveying radio-loud active galaxies and their large-scale environments
22167 LEDA138501 ACIS-S 10 C-BASS: A Chandra Legacy Survey of AGN at the Highest Spatial Resolutions
22168 2MASXJ02141794+5144520 ACIS-S 10 C-BASS: A Chandra Legacy Survey of AGN at the Highest Spatial Resolutions
22193 B2.3 2254+35 ACIS-S 16 X-Ray surveying radio-loud active galaxies and their large-scale environments
22194 IC 4316 ACIS-I 10 ULX Science with Nearby Galaxies
22190 2MASX J04123958+5825181 ACIS-S 10 C-BASS: A Chandra Legacy Survey of AGN at the Highest Spatial Resolutions
22192 B2.1 0536+33B ACIS-S 16 X-Ray surveying radio-loud active galaxies and their large-scale environments
22191 J133331d15m012653d3_s1 ACIS-S 10 Chandra-NuSTAR synergy in the NuSTAR serendipitous survey
22208 Cen_X4_s3 ACIS-S 10 Chandra-NuSTAR synergy in the NuSTAR serendipitous survey
22211 Cen_X4_s4 ACIS-S 10 Chandra-NuSTAR synergy in the NuSTAR serendipitous survey
22209 Cen_X4_s2 ACIS-S 20 Chandra-NuSTAR synergy in the NuSTAR serendipitous survey
22210 Cen_X4_s6 ACIS-S 20 Chandra-NuSTAR synergy in the NuSTAR serendipitous survey
22226 WISEJ144850.99-400845.6 ACIS-S 10 C-BASS: A Chandra Legacy Survey of AGN at the Highest Spatial Resolutions
22227 MCG-1-40-1 ACIS-S 10 C-BASS: A Chandra Legacy Survey of AGN at the Highest Spatial Resolutions
22229 J133331d15m012653d3_s1 ACIS-S 10 Chandra-NuSTAR synergy in the NuSTAR serendipitous survey
22252 2FGL_J1653d6m0159_s3 ACIS-S 10 Chandra-NuSTAR synergy in the NuSTAR serendipitous survey
22247 PKS 0706-15 ACIS-S 10 C-BASS: A Chandra Legacy Survey of AGN at the Highest Spatial Resolutions
22251 NGC6240_s3 ACIS-S 10 Chandra-NuSTAR synergy in the NuSTAR serendipitous survey
22248 ESO565-19 ACIS-S 10 C-BASS: A Chandra Legacy Survey of AGN at the Highest Spatial Resolutions
22249 ESO499-41 ACIS-S 10 C-BASS: A Chandra Legacy Survey of AGN at the Highest Spatial Resolutions
22250 2MASXJ16504275p0436180_s2 ACIS-S 10 Chandra-NuSTAR synergy in the NuSTAR serendipitous survey
22261 M33_MOS01_s6 ACIS-S 10 Chandra-NuSTAR synergy in the NuSTAR serendipitous survey
22267 [HB89] 0834-201 ACIS-S 10 C-BASS: A Chandra Legacy Survey of AGN at the Highest Spatial Resolutions
22269 MCG_01_24_012_s2 ACIS-S 10 Chandra-NuSTAR synergy in the NuSTAR serendipitous survey
22268 MCG-1-24-12 ACIS-S 10 C-BASS: A Chandra Legacy Survey of AGN at the Highest Spatial Resolutions
22270 Mrk1419_s4 ACIS-S 10 Chandra-NuSTAR synergy in the NuSTAR serendipitous survey
22274 2RXS J184350.8-064920 ACIS-S 20 Stellar activity with TESS and Chandra
22287 Nova_Sgr_2015_2_s5 ACIS-S 10 Chandra-NuSTAR synergy in the NuSTAR serendipitous survey
22735 2MASX J21174162-0208341 ACIS-S 10 Chandra-NuSTAR synergy in the NuSTAR serendipitous survey
22686 2RXS J211827.5-034050 ACIS-S 20 Stellar activity with TESS and Chandra
22871 UGC1479 ACIS-S 10 Chandra-NuSTAR synergy in the NuSTAR serendipitous survey

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Last modified: 2019-08-26

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