Dewar

Model

Type

Window Position

LN2 Hold Time

(hours)

Outer Dimensions

(inches)

Notes

Available Windows

Sideview

Downview

M204

Metal

X

> 8

2.5 Ø x 5.25 H

Fig. 34-1

Sapphire (WG)

ZnSe (WJ)

KRS-5 (WK)

Silicon AR Coated (WB)

and

Ge AR Coated (WE)

M205

Metal

X

> 8

2.5 Ø x 5.31 H

Fig. 34-2

M200

Metal

X

> 12

2.5 Ø x 6.75 H

M201

Metal

X

> 12

2.5 Ø x 6.81 H

M108

Metal

X

> 8

2.5 Ø x 5.25 H

Fig. 35-1 SMA
Connectors on Dewar

M209

Metal

X

> 24

3.5 Ø x 8.00 H

Fig. 35-2

DB

Glass

X

> 5

2.0 Ø x 5.0 H

Sapphire (WG), Ge (WD)

DC

Glass

X

> 4

1.65 Ø x 5.0 H

Sapphire (WG)

DG

Glass

X

JT Cryostat

0.75 Ø x 2.5 H

.204" JTC Bore,
part of JTC System

Sapphire (WG), Ge (WD)

DE

Glass

X

JT Cryostat

0.50 Ø x 2.5 H

.204" JTC Bore

Sapphire (WG)