Page created: Saturday, 16 May 2026 00:40:29 UTC

The target - PG 1553+113 - was observed by ACIS-I for 4 hours and 26 minutes, ended now, and is part of the proposal Identifying the Hosts of Hot Gas Absorption. The target - also called QSO B1553+113 - is located in the constellation Serpens and is a BL Lac. More information on the target can be found at SIMBAD. See related observations: PG 1553+113 (29897, 30718, 30719, 32344); Ton S180 (29898).

View:
The instrument field-of-view on top of the DSS image of the source.The instrument field-of-view on top of the PSPC image of the source.The instrument field-of-view on top of the RASS image of the source.
Target: PG 1553+113
SIMBAD Type: BL Lac
Observation Details: 30435
Sequence Summary: 901871
Proposal Id: 26900274
Proposal: Cycle 26, General Observer, EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYS
Instrument: ACIS-I
Chips: ACIS-012367
Data Mode: FAINT
Date: 20:13 Friday, 15 May 2026 (UTC)
Exposure (approved): 4 hours and 26 minutes
Right Ascension: 15h 55m 43.0s
Declination: +11° 11' 24.4"
Roll: 160°
Constellation: Serpens

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