Instrument Information
IDENTIFIER urn:nasa:pds:context:instrument:orm.galileo_zeiss3m5.dolores::1.1
NAME DOLORES (DEVICE OPTIMIZED FOR LOW RESOLUTION)
TYPE IMAGER

SPECTROMETER
DESCRIPTION DOLORES (Device Optimized for LOw RESolution) is a focal reducer instrument installedat the Nasmyth B focus of the Telescopio Nazionale Galileo at La Palma. The detectoris a 2048 x 2048 E2V 4240 thinned back-illuminated, deep-depleted, Astro-BB coatedCCD with a pixel size of 13.5 microns. The scale is 0.252 arcsec/pixel which yields afield of view of about 8.6 x 8.6 arcmin. The instrument allows imaging through broadand narrow band filters as well as spectroscopic observations with resolving powersbetween RS = ~500 and RS = ~6000. A multi-slit mode, based on custom masksmanufactured by a dedicate cutting machine, is also available.Grisms:Name disp. wavelength range (A) Resolution A/Pix min central max (1" slit)LR-B 2.52 3000 5850 8430 585LR-R 2.61 4470 7400 10073 714V390 0.26 3634 3900 4166 3766V486 0.20 4612 4725 4838 5953V510 0.22 4875 5100 5325 5950V589 0.27 5619 5895 6171 5502V656 0.32 6232 6560 6888 5248V860 0.44 8149 8600 9051 4000VHRV 0.95 4752 5725 6698 1527VHRR 0.70 6238 7000 7717 2513VHRI 0.68 7433 8130 8826 3035Notes:1. The LR-R Grism has a built-in order-blocking filter cutting blueward~5000 angstroms; nevertheless, blue objects will show noticeable second-orderoverlap above ~9500 angstroms.2. The V390 Grism is not mounted on the grism wheel and may be used ONLY invisitor mode. Users interested in using this grism must explicitly requestit in the Observing Proposal.3. The V860, VHRR, and VHRI Grisms suffer from significant second-ordereffect and will be automatically coupled with the ~560 nm cut-on filteravailable on the filters wheel.4. Resolution calculated for a 1" Slit.5. Please note that there aren't suitable wavelength calibration lamps forthe V486 GRISM.
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