DEIMOS
Science Filter Complement

Background

The DEIMOS science filters lie in the converging beam directly between the DEIMOS camera and the CCD dewar window. The filters are significantly smaller than the LRIS filters, measuring 6.5×6.5 inches in size.

Broadband Imaging Filters

Filter
Name		 Composition Pivot
Wavelength
[Å]		 Equivalent
Width
[Å]		 Response
Curve1		 Notes
B 2GG385+
1BG12+
3S8612		 4416 373 ASCII FITS PostScript Vendor: Andover
V 2GG495+2BG39+2clear 5452 628 ASCII FITS PostScript Vendor: Andover
Warning: This filter is scratched and is not recommended for use.
R 3OG570+3KG3 6487 810 ASCII FITS PostScript Vendor: Andover
I 3RG9+3clear 8390 1689 ASCII FITS PostScript Vendor: Lick
Z 4RG830+2clear 9085 969 ASCII FITS PostScript Vendor: Lick

Notes:

Long-Pass Order-Blocking Spectroscopy Filters

Filter
Name		 Composition Cut-on
Wavelength
[Å]		 Notes
BAL12 ?? N/A "Clear" filter for spectroscopy without an order-blocker.
Warning: This filter is scratched and is not recommended for use.
GG400 3GG400 + 3WG305 4000  
GG455 3GG455 + 3WG305 4550  
GG495 6GG495 4950  
OG550 6OG550 5500  

Narrowband Spectroscopy Filters

Filter
Name		 Composition Central
Wavelength
[Å]		 Width [Å] Notes
NB8560 Interference 8560 (manufacturer)
8563 (measured)		 260 Calcium triplet narrowband filter donated by T. Smecker-Hane,
NB8580 Interference 8580 (nominal) 100? Calcium triplet narrowband filter donated by T. Smecker-Hane, S. Chapman, R. Ibata, M. Rich, R. GuhaThakurta
Filter bandpass does not meet spec.
Warning: This filter is scratched and is not recommended for use.

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Last modified: Mon May 1 17:46:07 HST