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@ARTICLE{Ofek:598573,
author = {Ofek, E. O. and Ben-Ami, S. and Polishook, D. and Segre, E.
and Blumenzweig, A. and Strotjohann, N.-L. and Yaron, O. and
Shani, Y. M. and Nachshon, S. and Shvartzvald, Y. and
Hershko, O. and Engel, Max and Segre, M. and Segev, N. and
Zimmerman, E. and Nir, G. and Judkovsky, Y. and Gal-Yam, A.
and Zackay, B. and Waxman, E. and Kushnir, D. and Chen, P.
and Azaria, R. and Manulis, I. and Diner, O. and
Vandeventer, B. and Franckowiak, A. and Weimann, S. and
Borowska, J. and Garrappa, S. and Zenin, A. and Fallah
Ramazani, V. and Konno, Ruslan and Küsters, D. and Sadeh,
I. and Parsons, R. D. and Berge, D. and Kowalski, Marek and
Ohm, S. and Arcavi, I. and Bruch, R.},
title = {{T}he {L}arge {A}rray {S}urvey {T}elescope—{S}ystem
{O}verview and {P}erformances},
journal = {Publications of the Astronomical Society of the Pacific},
volume = {135},
number = {1048},
issn = {0004-6280},
address = {Philadelphia, PA},
publisher = {IOP Publishing},
reportid = {PUBDB-2023-06892},
pages = {065001},
year = {2023},
abstract = {The Large Array Survey Telescope (LAST) is a wide-field
visible-light telescope array designed to explore the
variable and transient sky with a high cadence. LAST will be
composed of 48, 28 cm f/2.2 telescopes (32 already
installed) equipped with full-frame backside-illuminated
cooled CMOS detectors. Each telescope provides a field of
view (FoV) of 7.4 deg$^2$ with 1.25 pix$^{−1}$, while the
system FoV is 355 deg$^2$ in 2.9 Gpix. The total collecting
area of LAST, with 48 telescopes, is equivalent to a 1.9 m
telescope. The cost-effectiveness of the system (i.e.,
probed volume of space per unit time per unit cost) is about
an order of magnitude higher than most existing and
under-construction sky surveys. The telescopes are mounted
on 12 separate mounts, each carrying four telescopes. This
provides significant flexibility in operating the system.
The first LAST system is under construction in the Israeli
Negev Desert, with 32 telescopes already deployed. We
present the system overview and performances based on the
system commissioning data. The Bp 5σ limiting magnitude of
a single 28 cm telescope is about 19.6 (21.0), in 20 s (20
× 20 s). Astrometric two-axes precision (rms) at the
bright-end is about 60 (30) mas in 20 s (20 × 20 s), while
absolute photometric calibration, relative to GAIA, provides
∼10 millimag accuracy. Relative photometric precision, in
a single 20 s (320 s) image, at the bright-end measured over
a timescale of about 60 minutes is about 3 (1) millimag. We
discuss the system science goals, data pipelines, and the
observatory control system in companion publications.},
cin = {$Z_GA$ / $Z_CTAS$ / $Z_DZA$ / DOOR ; HAS-User},
ddc = {520},
cid = {$I:(DE-H253)Z_GA-20210408$ / $I:(DE-H253)Z_CTAS-20210408$ /
$I:(DE-H253)Z_DZA-20230622$ / I:(DE-H253)HAS-User-20120731},
pnm = {613 - Matter and Radiation from the Universe (POF4-613)},
pid = {G:(DE-HGF)POF4-613},
experiment = {EXP:(DE-H253)CTA-20150101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:001016377100001},
doi = {10.1088/1538-3873/acd8f0},
url = {https://bib-pubdb1.desy.de/record/598573},
}