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Scientific

Legacy Monochromators

Spectrometer and Spectrograph Guide

Legacy ModelFocal LengthImagingF NbrResolutionDispersionEquivalent

DH10 (double)

100 mm

-

f/3.5

0.5 nm

4 nm/mm

Gemini 180

H10

100 mm

-

f/3.5

1 nm

8 nm/mm

MicroHR

H20

200 mm

-

f/4.2

0.5 nm

4 nm/mm

MicroHR

CP200 Spectrograph

200 mm

Yes

f/2.9

-

-

MicroHR

1681A / 1681B (SPEX)

220 mm

-

f/3.9

0.25 nm

3.6 nm/mm

Triax 180

1681C (SPEX)

220 mm

-

f/3.9

0.25 nm

3.1 nm/mm

Triax 180

1680A / 1680B (SPEX Double)

220 mm

-

f/3.9

0.2 nm

1.8 nm/mm

Gemini 180

270M (SPEX)

270 mm

Yes

f/4

0.1 nm

3.1 nm/mm

iHR320

HR320

320 mm

-

f/4.4

0.04 nm

2.4 nm/mm

iHR320

Triax 320/322

320 mm

Yes

f/4.1

0.06 nm

2.64 nm/mm

iHR320

340E / 340S (SPEX)

340 mm

-

f/5.9

0.15 nm

2.5 nm/mm

iHR320

HR460

460 mm

Yes

f/5.3

0.06 nm

1.76 nm/mm

iHR320

500M

500 mm

-

f/4.0

0.02 nm

1.6 nm/mm

FHR 640
or
iHR320

1870 (SPEX)

500 mm

-

f/6.9 / f/8.9

0.02 nm

1.6 nm/mm

FHR 640
or 
iHR320

Triax 550/522

550 mm

Yes

f/6.4

0.025 nm

1.55 nm/mm

iHR320

HRS

600 mm

-

f/7

0.02 nm

1.2 nm/mm

FHR 640

THR640

640 mm

-

f/5.6

0.016 nm

1.2 nm/mm

FHR 640​​​​​​​

1500 (SPEX)

750 mm

-

f/6.8

0.01 nm

1.0 nm/mm

FHR 640​​​​​​​

750S / 750I

750 mm

Yes (I)

f/6.0-f/7.5

0.015 nm

1.1 nm/mm

FHR 640​​​​​​​

1701 / 1702 (SPEX)

750 mm

-

f/7

0.1 nm

1.1 nm/mm

FHR 640​​​​​​​

1401 / 1402 (SPEX)

750 mm / 850 mm

-

f/6.8 / f/7.8

0.008 nm / 0.006 nm

0.55 nm/mm / 0.44 nm/mm

U1000

1403 / 1403 (SPEX)

850 mm

-

f/6.9

0.005 nm

0.3 nm/mm

U1000

1703 / 1704 (SPEX)

1000 mm

-

f/9

0.008 nm

0.8 nm/mm

1000M

1802 (SPEX)

1000 mm

-

f/8.4

0.008 nm

0.8 nm/mm

1000M​​​​​​​

THR1000

1000 mm

-

f/7.5

0.008 nm

0.8 nm/mm

1000M​​​​​​​

THR1500

1500 mm

-

f/14

0.0015 nm

0.26 nm/mm

1250M​​​​​​​

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