Masking techniques at the focal plane of the FORS instruments

被引：3

作者：

Schink, H ^{[1
]}

Nicklas, H ^{[1
]}

Harke, R ^{[1
]}

Häfner, R ^{[1
]}

Hess, HJ ^{[1
]}

Hummel, W ^{[1
]}

Mantel, KH ^{[1
]}

Meisl, W ^{[1
]}

Muschielok, B ^{[1
]}

Tarantik, K ^{[1
]}

Seifert, W ^{[1
]}

机构：

[1] Univ Sternwarte Gottingen, D-37083 Gottingen, Germany

来源：

OPTICAL AND IR TELESCOPE INSTRUMENTATION AND DETECTORS, PTS 1 AND 2 | 2000年 / 4008卷

关键词：

instruments; optical; focal reducer; multi object spectroscopy; masking;

D O I：

10.1117/12.395470

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The FORS instruments are Focal Reducers and Spectrographs which are built in two copies for the Unit Telescopes UTI and UT2 of the ESO/VLT by a consortium of University Observatories. An overview of the instrument capabilities is given in a separate paper at this conference.(1) In this paper, the different masking techniques in the focal plane of the FORS instruments will be addressed, in detail: a storage and exchange mechanism for punched or laser-cut starplates, 19 individual movable slitlets, a selectable longslit setup and a separate polarimetry mask. The paper will focus on the mechanism foreseen to exchange masking plates within the focal plane of the instrument, to store a capacity of up to 10 masks for a single observation run and to replace used masks from outside by a new set of starplates which are prepared in a separate mask manufacturing unit at the Paranal Observatory.

引用

页码：175 / 181

页数：7

共 4 条

[1]

BOHNHARDT H, 1994, SCI ENG FRONTIERS 8, P199

[2]

HUMMEL W, P SPIE, V4010

[3] Construction of the FORS focal reducer spectrographs: Status report and first test results [J].

Nicklas, H ;

Seifert, W ;

Bohnhardt, H ;

KiesewetterKobinger, S ;

Rupprecht, G .

OPTICAL TELESCOPES OF TODAY AND TOMORROW: FOLLOWING IN THE DIRECTION OF TYCHO BRAHE, 1997, 2871 :1222-1230

[4] Image motion and flexure compensation of the FORS Spectrographs [J].

Nicklas, H ;

Bohnhardt, H ;

Furtig, W ;

Harke, R ;

Hess, A ;

Jurgens, P ;

Muschielok, B ;

Seifert, W ;

Stahl, O ;

Tarantik, K .

OPTICAL ASTRONOMICAL INSTRUMENTATION, PTS 1 AND 2, 1998, 3355 :93-104

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