The target - Perseus cluster - is being observed by ACIS-I for 3 hours and 53 minutes. The observation started 36 minutes ago and ends in 3 hours, and is part of the proposal The sounds of feedback: deep and wide imaging of the cool core of the Perseus cluster. The target - also called ACO 426 - is located in the constellation Perseus and is a Cluster of Galaxies. More information on the target can be found at SIMBAD
. See related observations: Perseus cluster (30278, 30284, 30285, 30282, 30846, 30283, 30860, 30279, 30883, 30280, 30995, 30315, 31974, 29631, 30308, 32005, 30310, 32006, 30313, 32007, 30861, 30281, 32014, 32015, 30317, 32016, 31987, 32017, 31988, 31989, 31990, 30287, 32028, 30288, 32029, 30290, 32030, 32031, 30293, 32041, 30299, 32042, 30312, 32043, 30289, 30311, 32054, 32055, 32056, 30291, 32086, 30322, 32087, 30294, 30320, 30321, 30296, 30314, 30316, 30295, 30298, 30302, 30306, 30307, 30318, 30319, 30297, 30300, 30301, 30303, 30304, 32177, 30305, 30286, 32199, 30292, 32200, 31880); Perseus cluster E (29635, 30359, 30369, 30370, 31964); Perseus cluster N (29632, 32184, 32185); Perseus cluster W (29633, 30336, 30344, 32201).
This is a time-critical observation.
| Target: | Perseus cluster |
| SIMBAD Type: | Cluster of Galaxies |
| Observation Details: | 32202 |
| Sequence Summary: | 802196 |
| Proposal Id: | 25808977 |
| Proposal: | Cycle 25, CLP, CLUSTERS OF GALAXIES |
| Instrument: | ACIS-I |
| Chips: | ACIS-01236 |
| Data Mode: | FAINT |
| Date: | 20:23 Thursday, 5 March 2026 (UTC) |
| Exposure (approved): | 3 hours and 53 minutes |
| Right Ascension: | 03h 19m 48.2s |
| Declination: | +41° 30' 42.2" |
| Roll: | 287° |
| Constellation: | Perseus |
| Time critical: | Yes |
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