The target - V444 Cyg - is being observed by ACIS-S and the High Energy Transmission Grating (HETG) for 8 hours and 36 minutes. The observation started 3 hours ago and ends in 6 hours, and is part of the proposal Using the HETGS to study the dynamics of colliding winds by resolving emission lines in V444 Cygni. The target - also called HD 193576 - is located in the constellation Cygnus and is a Wolf-Rayet. More information on the target can be found at SIMBAD
. See related observations: 31527, 31524, 32034, 31526, 32035, 31523.
This is a joint observation with X-ray Multi Mirror Mission (XMM-Newton) (for 2 days and 3 hours). However, it does not necessarily mean that the observations will be done at the same time!
| Target: | V444 Cyg |
| SIMBAD Type: | Wolf-Rayet |
| Observation Details: | 31522 |
| Sequence Summary: | 201854 |
| Proposal Id: | 27200024 |
| Proposal: | Cycle 27, General Observer, STARS AND WD |
| Instrument: | ACIS-S, High Energy Transmission Grating (HETG) |
| Chips: | ACIS-456789 |
| Data Mode: | FAINT |
| Date: | 13:53 Sunday, 31 May 2026 (UTC) |
| Exposure (approved): | 8 hours and 36 minutes |
| Right Ascension: | 20h 19m 32.4s |
| Declination: | +38° 43' 54.0" |
| Roll: | 128° |
| Constellation: | Cygnus |
| Joint with: | X-ray Multi Mirror Mission (XMM-Newton) for 2 days and 3 hours |
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