0220-07_-_Optical_Mirrors_(RPED)_-_Drawing_01_(20798-02-0012).PDF

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A

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0.337

0.99

1.22

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SECTION A-A

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DETAIL B

SCALE 1 : 1

Notes:

1. Intended use: Primary Mirror in a beam expanding telescope

2. Material: Zerodur or ClearCeram

3. Optical surface :

a. Clear aperture: Area of the optical surface between

2.25 inch inner diameter and 12.5 inch outer diameter

b. R = 31.25 ± 0.03 inches concave

c. Conic constant = -1.0 (Parabolic)

d. Surface error: Less than 0.042 waves rms at 632 nm

e. Surface roughness: Less than 20 Angstroms rms

f. Scratch dig: 20-10 over 99.99% of the surface with no scratches larger than 80 and no digs greater than 60

4. Back surface: Fine grind

REVISIONS:

Fixed error in mirror sag, updated parabolic back surfaces.A.

Increased edge thickness to avoid cracking.B.

Typical all edges

D

C

B

AA

B

C

D

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DRAWING IS THE SOLE PROPERTY OF

THE ELECTRO-OPTICS CENTER. ANY

REPRODUCTION IN PART OR AS A WHOLE

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See Notes

See Notes

DRAWN

COMMENTS:

DATENAME

TITLE:

SIZE

B

DWG. NO. REV

WEIGHT: 7.08lbs

UNLESS OTHERWISE SPECIFIED:

B

EJF 7JUL16

13" Primary Mirror

SHEET 1 OF 1

20798-02-0012

DO NOT SCALE DRAWING

DIMENSIONS ARE IN INCHES

TOLERANCES:

.XX = ± 0.01

.XXX = ± 0.005

ANG = ± 0.5

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