MODS Slit Masks

The table below lists the slit masks loaded into the MODS1 and MODS2 slit mask cassettes. The slits may be selected by the maskID code listed (selection by cassette position number is deprecated).

Facility masks are in the reserved positions 1 thru 12. Observer-designed custom masks are loaded in positions 13 thru 24.

Cassette MODS1 MODS2
Pos maskID Description maskID Description  
1 DarkMask Blank Mask for a Dark Block LS5x60x0.6 0.6 arcsec Segmented Long Slit  
2 SieveMask Pinhole Imaging Sieve Nr3 SieveMask Pinhole Imaging Sieve Nr3  
3 Imaging Empty Frame for Imaging Stop Imaging Empty Frame for Imaging Stop  
4 LS5x60x0.3 0.3 arcsec Segmented Long Slit LS5x60x0.3 0.3 arcsec Segmented Long Slit  
5 LS5x60x0.6 0.6 arcsec Segmented Long Slit Not Usable  
6 LS5x60x0.8 0.8 arcsec Segmented Long Slit LS5x60x0.8 0.8 arcsec Segmented Long Slit  
7 LS5x60x1.0 1.0 arcsec Segmented Long Slit LS5x60x1.0 1.0 arcsec Segmented Long Slit  
8 LS5x60x1.2 1.2 arcsec Segmented Long Slit LS5x60x1.2 1.2 arcsec Segmented Long Slit  
9 LS60x5 5 arcsec Spectrophotometry Wide Slit LS60x5 5 arcsec Spectrophotometry Wide Slit  
10 PinholeSlit Pinhole Slit PinholeSlit Pinhole Slit  
11 Pointing Mask MODS Pointing Mask Pointing Mask MODS Pointing Mask  
12 Not Usable No Mask 2.4 arcsec Segmented Long Slit  
13 2.4 arcsec Segmented Long Slit     No Mask  
14   No Mask   No Mask  
15   No Mask   No Mask  
16   No Mask   No Mask  
17   No Mask   No Mask  
18 ID 503205 mods.39.UDS1.mms ID 503205 mods.39.UDS1.mms  
19 ID 593032 mods.1.UDS2.mms ID 593032 mods.1.UDS2.mms  
20 ID 582025 mods.12.j0309.mms ID 582025 mods.12.j0309.mms  
21 ID 583616 mods.13.j0309.mms ID 583616 mods.13.j0309.mms  
22 ID 585229 mods.14.j0309.mms ID 585229 mods.14.j0309.mms  
23 ID 560300 mods.9.j0309.mms ID 560300 mods.9.j0309.mms  
24   No Mask   No Mask  
Mask exchange done by Joe and Elliott 1-14-2023. Udated list by Elliott
Topic revision: r247 - 14 Jan 2023, ElliottSolheid
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