LSST Secondary Mirror System Final Design

被引：5

作者：

Neill, Douglas R. ^{[1
]}

Bogan, Gregory ^{[2
]}

Zajac, Dale ^{[2
]}

Araujo, Constanza ^{[1
]}

Gressler, William J. ^{[1
]}

DeVries, Joe ^{[1
]}

Hileman, Edward A. ^{[1
]}

Lotz, Paul J. ^{[1
]}

Mills, Dave ^{[1
]}

Thomas, Sandrine ^{[1
]}

Sebring, Thomas A. ^{[3
]}

Sebag, Jacques ^{[1
]}

Warner, Mike ^{[1
]}

Wiecha, Oliver ^{[1
]}

机构：

[1] Large Synopt Survery Telescope, 950 N Cherry, Tucson, AZ 85719 USA

[2] Harris Corp, POB 60488, Rochester, NY 14606 USA

[3] Xoptx, 270 Bellevue Ave Unit 260, Newport, RI 02840 USA

来源：

GROUND-BASED AND AIRBORNE TELESCOPES VI | 2016年 / 9906卷

关键词：

LSST; secondary mirror; mirror cell; mirror supports; actuators;

D O I：

10.1117/12.2234021

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The Large Synoptic Survey Telescope (LSST) has a 10 degrees square field of view which is achieved through a 3 mirror optical system comprised of an 8.4 meter primary, 3.5 meter secondary (M2) and a 5 meter tertiary mirror. The M2 is a 100mm thick meniscus convex asphere. The mirror surface is actively controlled by 72 axial electromechanical actuators (axial actuators). Transverse support is provided by 6 active tangential electromechanical actuators (tangent links). The final design has been completed by Harris Corporation. They are also providing the fabrication, integration and testing of the mirror cell assembly, as well as the figuring of the mirror. The final optical surface will be produced by ion figuring. All the actuators will experience 1 year of simulated life testing to ensure that they can withstand the rigorous demands produced by the LSST survey mission. Harris Corporation is providing optical surface metrology to demonstrate both the quality of the optical surface and the correctablility produced by the axial actuators.

引用

页数：12

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