Abstract
We describe the design of Lobster-ISS, an X-ray imaging all-sky monitor
(ASM) to be flown as an attached payload on the International Space
Station. Lobster-ISS is the subject of an ESA Phase-A study which will
begin in December 2001. With an instantaneous field of view 162 x 22.5
degrees, Lobster-ISS will map almost the complete sky every 90 minute
ISS orbit, generating a confusion-limited catalogue of ~250,000 sources
every 2 months. Lobster-ISS will use focusing microchannel plate optics
and imaging gas proportional micro-well detectors; work is currently
underway to improve the MCP optics and to develop proportional counter
windows with enhanced transmission and negligible rates of gas leakage,
thus improving instrument throughput and reducing mass. Lobster-ISS
provides an order of magnitude improvement in the sensitivity of X-ray
ASMs, and will, for the first time, provide continuous monitoring of the
sky in the soft X-ray region (0.1-3.5 keV). Lobster-ISS provides long
term monitoring of all classes of variable X-ray source, and an
essential alert facility, with rapid detection of transient X-ray
sources such as Gamma-Ray Burst afterglows being relayed to contemporary
pointed X-ray observatories. The mission, with a nominal lifetime of 3
years, is scheduled for launch on the Shuttle c.2009.
Original language | English |
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Title of host publication | Proceedings of SPIE Volume 4497 |
Subtitle of host publication | X-Ray and Gamma-Ray Instrumentation for Astronomy XII |
Pages | 115-126 |
Volume | 4497 |
DOIs | |
Publication status | Published - 1 Jan 2002 |