This page is for quick reference. Please consult the DeVeny Users Manual for more detailed information.

DeVeny Gratings:

ID

Ruling (g/mm)

Blaze (Å)

Dispersion (Å/pix)

Free Spectra Range (Å)

Comments

DV115050004.38800KPNO 201
DV230040002.174440KPNO 09
DV330067502.174440KPNO 32
DV440085001.663400
DV550055001.332720KPNO 240
DV660049001.142320KPNO 26new
DV760067501.142320KPNO 35
DV883180000.801630KPNO 47
DV9120050000.581180


DV10216050000.336704500Å red tilt limit


DeVeny Filters:

WheelPosition CPosition 1Position 2Position 3Position 4

"Front"

pre-slit

Clear

Neutral Density

2.5 mag

Neutral Density

5.0 mag

Neutral Density

7.5 mag

EMPTY

"Rear"

post-slit

Clear

Order Sorting

GG420

NOT INSTALLED*

GG495

Order Sorting

OG570

NOT INSTALLED

(e.g., WG360?)

*The GG495 filter has been removed from the instrument; replacement plan TBD.  (2021Apr29)


DeVeny Calibration Arc Lamps:

Ne - Neon (stabilizes within seconds)  – Video illustrating stabilization

Ar - Argon (stabilizes within 1 minute)  – Video illustrating stabilization

Hg - Mercury (stabilizes in 1-3 minutes)  – Video illustrating stabilization

Cd - Cadmium (stabilizes in ~6 minutes)  – Video illustrating stabilization


Example Grating Settings:

GratingTilt AngleCentral WavelengthRangeFilterNotes

DV1

21.00º

7200 Å

2600 Å 11,600 Å

GG420 

O(2) at λ > 8400 

DV222.54º5200 Å3000 Å 7400 ÅGG420 
DV324.05º6750 Å4500 Å 9000 ÅGG420

O(2) at λ > 8400

DV325.28º8000 Å5800 Å 10,200 Å OG570 
DV426.06º6600 Å4900 Å 8300 ÅGG420 
DV427.89º8000 Å5800 Å 10,200 ÅOG570 
DV524.62º4400 Å3000 Å 5800 ÅClear 
DV527.24º6000 Å4600 Å  7400 ÅGG420
DV5 29.04º7100 Å5700 Å 8500 ÅGG495 
DV627.04º4900 Å3750 Å 6050 ÅClear 
DV7 31.19º 7000 Å5850 Å 8150 ÅGG495 
DV8 39.51º8000 Å7200 Å 8800 ÅOG570 
DV933.20º4000 Å3400 Å 4600 ÅClear 


DV9 37.27º5000 Å4400 Å 5600 ÅClear 
DV9 42.30º6200 Å5600 Å 6800 ÅGG495 
DV9 46.65º7200 Å6600 Å 7800 ÅOG570 Collimator rails at lower limit
DV1044.28º3700 Å3370 Å 4030 ÅClear Collimator rails at lower limit
DV1048.0º4170 Å3840 4500ClearRed tilt limit
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