The target - Perseus Cluster - is being observed by ACIS-I for 2 hours and 46 minutes. The observation started 2 hours ago and ends in 49 minutes, and is part of the proposal AO-27 Observations 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: 31414, 31415, 31416, 31417.
This is a time-critical and monitoring observation.
| Target: | Perseus Cluster |
| SIMBAD Type: | Cluster of Galaxies |
| Observation Details: | 31413 |
| Sequence Summary: | 890274 |
| Proposal Id: | 27800389 |
| Proposal: | Cycle 27, Calibration Observation, CLUSTERS OF GALAXIES |
| Instrument: | ACIS-I |
| Chips: | ACIS-23 |
| Data Mode: | FAINT |
| Date: | 19:22 Monday, 21 September 2026 (UTC) |
| Exposure (approved): | 2 hours and 46 minutes |
| Right Ascension: | 03h 19m 48.2s |
| Declination: | +41° 30' 42.1" |
| Roll: | 118° |
| Constellation: | Perseus |
| Time critical: | Yes |
| Monitor: | Yes |
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