The target - EXO 0748-676 - is being observed by ACIS-S for 6 hours and 40 minutes. The observation started 2 hours ago and ends in 4 hours, and is part of the proposal Crustal cooling in accretion-heated neutron stars. The target - also called V* UY Vol - is located in the constellation Volans and is a Low Mass X-ray Binary. The source is so bright in X-rays that only one-eigth of the chip is used for the observation. More information on the target can be found at SIMBAD
. See related observations: 30047, 30048, 30049, 30050, 32037, 30051.
This is a joint observation with Swift Gamma-Ray Burst Mission (for 5 hours and 33 minutes). However, it does not necessarily mean that the observations will be done at the same time! This is a time-critical and monitoring observation.
This is an observation from a TOO (target of opportunity) proposal.
| Target: | EXO 0748-676 |
| SIMBAD Type: | Low Mass X-ray Binary |
| Observation Details: | 33436 |
| Sequence Summary: | 402585 |
| Proposal Id: | 26400303 |
| Proposal: | Cycle 26, Target of Opportunity, BH AND NS BINARIES |
| Turnaround time: | Slow |
| Instrument: | ACIS-S |
| Chips: | ACIS-678 |
| Sub Array: | Start: 449 Rows: 128 |
| Data Mode: | FAINT |
| Date: | 18:47 Tuesday, 22 September 2026 (UTC) |
| Exposure (approved): | 6 hours and 40 minutes |
| Right Ascension: | 07h 48m 33.7s |
| Declination: | -67° 45' 07.7" |
| Roll: | 108° |
| Constellation: | Volans |
| Joint with: | Swift Gamma-Ray Burst Mission for 5 hours and 33 minutes |
| Time critical: | Yes |
| Monitor: | Yes |
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