The target - ZwCl 0857.9+2107 - is being observed by ACIS-S for 4 hours and 10 minutes. The observation started 1 hour ago and ends in 3 hours, and is part of the proposal What triggered the quasar outburst in the relaxed, cool core cluster Zw2089? The target is located in the constellation Cancer. See related observations: 30381, 30388, 30391, 30400, 30721, 30722, 30723, 30724, 30725, 30726, 30021, 30382, 30386, 30389, 30384, 30385, 30387, 30383, 30755, 30756, 30757, 30396, 30758, 30759, 30397, 30774, 30775, 30776, 30777, 30778, 30779, 30392, 30395, 32105, 32106, 32122, 32123, 30390, 32130, 32131, 32132, 30393, 32144, 32145, 30399, 32146, 30394, 32355, 31883, 32363.
This is a joint observation with National Radio Astronomy Observatory (NRAO) (for 1 hour and 6 minutes). However, it does not necessarily mean that the observations will be done at the same time!
| Target: | ZwCl 0857.9+2107 |
| Observation Details: | 30398 |
| Sequence Summary: | 802203 |
| Proposal Id: | 26800092 |
| Proposal: | Cycle 26, General Observer, CLUSTERS OF GALAXIES |
| Instrument: | ACIS-S |
| Chips: | ACIS-5678 |
| Data Mode: | VFAINT |
| Date: | 14:32 Thursday, 28 May 2026 (UTC) |
| Exposure (approved): | 4 hours and 10 minutes |
| Right Ascension: | 09h 00m 36.8s |
| Declination: | +20° 53' 40.1" |
| Roll: | 246° |
| Constellation: | Cancer |
| Joint with: | National Radio Astronomy Observatory (NRAO) for 1 hour and 6 minutes |
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