Summary

Grating
Name		 Grooves
[l mm-1]		 Blaze Wavelength
[Å]		 Dispersion
[Å pix-1]		 Spectral Length
(8192 px)
[Å]		 FWHM resolution
(0.75" slit)
[Å]		 Efficiency Notes
600ZD 600 7500 0.65 5300 3.5  
830G 830 8640 0.47 3840 2.5  
900ZD 900 5500 0.44 3530 2.1  
1200G 1200 7760 0.33 2630 1.1–1.6  
1200B 1200 4500 0.33 2630 1.1–1.6  
600L-BSC 600 7500 -- -- -- -- Not in service
1200L 1200 7500 -- -- -- -- Not in service

Details

Description of Fields

GRATID The bar code on the grating
GRANAME The grating name as it appears on the GUI and in the image headers
GROOVESPMM Number of grooves per mm
BLAZWAVE Blaze wavelength (note: not angle)
BLAZANG Blaze angle
COATING Metallic coating
XDIM total x dimension in millimeters
YDIM total y dimension in millimeters
ZDIM z dimension in millimeters
XRUL ruled x dimension in millimeters
YRUL ruled y dimension in millimeters
MFR Name of manufacturer
MFRDATE Date manufactured
RCVDATE Date the grating was put into service
THRUCURVE Name of file or location where manufacturer's reflectivity curve may be found
THRUTABLE Name of file or location where tabular throughput data may be found
COMMENT Additional notes on the grating

600-line Zerodur GRATING

GRATID 1950
GRANAME 600L-Zerodur
GROOVESPM 600 (per mm)
BLAZWAVE 750 nm
BLAZANG 13.00 deg
COATING aluminum
XDIM 165 mm
YDIM 220 mm
ZDIM 35 mm
XRUL 154 mm
YRUL 206 mm
MFR Richardson Grating Lab
MFRDATE 07/22/97
RCVDATE 11/01/01??
THRUCURVE
THRUTABLE
COMMENT This is the prime 600-line grating; on Zerodur.

600-line borosilicate GRATING

GRATID 1951
GRANAME 600L-BSC
GROOVESPM 600 (per mm)
BLAZWAVE 750 nm
COATING aluminum
XDIM (total x dimension in meters)
YDIM (total y dimension in meters)
ZDIM
XRUL
YRUL
MFR Richardson Grating Lab
MFRDATE (date manufactured)
RCVDATE 10/01/00??
THRUCURVE
THRUTABLE
COMMENT This is the spare 600-line grating; on borosilicate glass.

830-line BK7 GRATING

GRATID 1951
GRANAME 830G
GROOVESPM 830.77 (per mm)
BLAZWAVE 864 nm
BLAZANG 20.566 deg
COATING gold
XDIM 165 mm
YDIM 220 mm
ZDIM 35 mm
XRUL 155 mm
YRUL 204 mm
MFR Richardson Grating Lab
MFRDATE 03/26/02
RCVDATE 05/01/02
THRUCURVE
THRUTABLE
COMMENT This was bought by the DEEP project. Funds came from UCSC.

900-line Zerodur GRATING

GRATID 1947
GRANAME 900L
GROOVESPM 900 (per mm)
BLAZWAVE 550 nm
BLAZANG 14.33 deg
COATING aluminum
XDIM 165 mm
YDIM 220 mm
ZDIM 35 mm
XRUL 154 mm
YRUL 206 mm
MFR Richardson Grating Lab
MFRDATE 07/22/97
RCVDATE 10/01/00
THRUCURVE
THRUTABLE
COMMENT

1200-line Zerodur GRATING

GRATID 1948
GRANAME 1200L
GROOVESPM 1200 (per mm)
BLAZWAVE 750 nm
BLAZANG 26.7 deg
COATING aluminum
XDIM 220 mm
YDIM 165 mm
ZDIM 35 mm
XRUL 160 mm
YRUL 213 mm
MFR Richardson Grating Lab
MFRDATE 07/22/97
RCVDATE 10/01/00
THRUCURVE
THRUTABLE
COMMENT This was borrowed by CARA for several months and acquired scratches. It is about 25% faster than the LRIS 1200-line grating.

1200-line BK7 GRATING

GRATID 1946
GRANAME 1200G
GROOVESPM 1200 (per mm)
BLAZWAVE 776 nm
BLAZANG 26.7 deg
COATING gold
XDIM 165 mm
YDIM 220 mm
ZDIM 35 mm
XRUL 155 mm
YRUL 204 mm
MFR Richardson Grating Lab
MFRDATE 04/03/02
RCVDATE 05/01/02
THRUCURVE
THRUTABLE
COMMENT This was bought by the DEEP project. Funds came from UCB.

1200-line blue-sensitive GRATING

GRATID 5000
GRANAME 1200B
GROOVESPM 1200 (per mm)
BLAZWAVE 450 nm
BLAZANG 15.7 deg
COATING aluminum
XDIM 165 mm
YDIM 220 mm
ZDIM 35 mm
XRUL 154 mm
YRUL 206 mm
MFR Richardson Grating Lab
MFRDATE 01/08/17
RCVDATE 17/08/17
THRUCURVE
THRUTABLE
COMMENT Blue-sensitive, 1200 l/mm grating.