The target - Perseus cluster - was observed by ACIS-I for 4 hours and 35 minutes, ended 16 minutes ago, 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, 32005, 30310, 32006, 30313, 32007, 30861); Perseus cluster E (29635, 30359, 30369, 30370, 31964); Perseus cluster W (29633, 30336).
This was a time-critical observation.
| Target: | Perseus cluster |
| SIMBAD Type: | Cluster of Galaxies |
| Observation Details: | 30308 |
| Sequence Summary: | 802196 |
| Proposal Id: | 25808977 |
| Proposal: | Cycle 25, CLP, CLUSTERS OF GALAXIES |
| Instrument: | ACIS-I |
| Chips: | ACIS-01236 |
| Data Mode: | FAINT |
| Date: | 22:04 Monday, 17 November 2025 (UTC) |
| Exposure (approved): | 4 hours and 35 minutes |
| Right Ascension: | 03h 19m 48.2s |
| Declination: | +41° 30' 42.2" |
| Roll: | 184° |
| Constellation: | Perseus |
| Time critical: | Yes |
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