DEIMOS LngVrMir Mask

Background

The LVM (Long Variable Multislit) slitmask is a commonly-used DEIMOS mask which features several longslits of varying width on a shiny surface, thus improving the visibility of faint targets in the vicinity of the slit. By offering numerous slit width options this mask can replace several longslit masks, allowing room for more observer masks while retaining the ability to use the apprpriate slit width for the current observing conditions and target.

Slit Layout

Slit Width
[arcsec]		 Slit Length
[arcsec]		 Slit Location
Guider Image
0.7 20 Rightmost Leftmost
0.8 20 2nd from Right 2nd from Left
1.0 20 Middle Middle
1.2 20 2nd from Left 2nd from Right
1.5 20 Leftmost Rightmost

Guider Image

The following image shows the appearance of the slits on the DEIMOS guider.

LVM slitmask viewed on DEIMOS guider

See Also
Last modified: 07/10/2020 05:20
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