ASTRO ELECTRONIC
Dipl.-Ing. Michael Koch
Raabestr. 43     D-37412 Herzberg     Germany
Tel: +49 (0)5521 854265    Fax:  +49 (0)5521 854266
www.astro-electronic.de e-mail
Gebrauchte Referenz-Objektive für Interferometer
  Used reference optics for interferometers

For used interferometers click here

For NEW reference optics click here

For new or used translation and tip/tilt stages click here


Used Transmission Spheres
Surface Error
Tested either with CaliBall (average of 10 measurements) or against a 1/40 wave f/3.3 transmission sphere.
Description            Pictures
Zygo® 
4" f/0.75

Stock Number: #43

Wood Box: no
Foam in Box: no

Phase map is for 95% aperture

Price:
7200.- EUR plus VAT


CVI 
4" f/0.75

Stock Number: #54

Wood Box: yes
Foam in Box: yes

Upper phase map is for 95% aperture

Lower phase map is for 70% aperture

Price:
6600.- EUR


Zygo® 
4" f/0.75

Stock Number: #88

Wood Box: no
Foam in Box: no

Upper phase map is for 95% aperture

Lower phase map is for 70% aperture

Price:
5000.- EUR plus VAT

Zygo® 
4" f/0.75

Stock Number: #47

Wood Box: yes
Foam in Box: no

Phase map is for 95% aperture

Notes:
Has some dust between the lenses (small red dots in the interferogram)

Price:
5500.- EUR plus VAT

Zygo® 
4" f/0.75

Stock Number: #48

Wood Box: yes
Foam in Box: no

Phase map is for 95% aperture

Notes:
Has a 1-2mm diameter damage in the reference surface (masked out in interferogram), and a small fungus (2-3mm diameter) on one of the inner surfaces (not visible in interferogram)

Price:
4500.- EUR plus VAT

Zygo® 
4" f/3.3

Stock Number: #80

Wood Box: yes
Foam in Box: no

Phase map is for 95% aperture

Price:
5000.- EUR plus VAT

already sold

4" f/3.3
unknown manufacturer

Stock Number: #87

Wood Box: no
Foam in Box: no

Phase map is for 95% aperture

Price:
5200.- EUR plus VAT

Zygo®
4" f/7.2 series 2

Stock Number: #89

Wood Box: yes
Foam in Box: no

Phase map is for 95% aperture

Price:
5000.- EUR plus VAT


Optimax
4" f/7.6

Stock Number: #82

Wood Box: yes
Foam in Box: no

Upper phase map is for 95% aperture

Lower phase map is for 50% aperture

Price:
2800.- EUR plus VAT

Zygo® 
4" f/11

Stock Number: #84

Wood Box: yes
Foam in Box: no

Phase map is for 95% aperture

Price:
4200.- EUR plus VAT

Zygo® 
4" f/11

Stock Number: #85

Wood Box: yes
Foam in Box: no

Phase map is for 95% aperture

Price:
3000.- EUR plus VAT

Zygo® 
4" f/15 Converger

Stock Number: #53

Wood Box: yes
Foam in Box: no

Phase map is for 95% aperture

Price:
3000.- EUR plus VAT


Zygo® COSTAR TEST LENS B.F.L. 1529mm

Serial Number: none, it's a one-of-a-kind item

Wood Box: yes
Foam in Box: yes

Notes:
I think it's a transmission asphere which was specially designed for testing the COSTAR instrument, which corrected the spherical aberration in the Hubble Space Telescope.

Price:
12000.- EUR plus VAT

(the 5-axis mount shown in the picture is not included)


Used Transmission Flats
Surface Error (Average of 10 measurements)
-- 4" or smaller optics were tested against a 4" 1/70 wave PVr flat
--Larger optics were tested against the central part of a 18" Zerodur TF from Zygo,
-- Aluminized optics were tested against a 6" 1/43 wave PV Dynaflect flat from Zygo
Description        Pictures
VEECO 6" Transmission Flat

AE stock number: 62

Back side has no antireflection coating, that means during alignmnt you have to know which of the two dots is the right one

In perfect condition!

Left side: 
Front surface at 95% aperture, tested against my own 1/30 wave flat

Wood Box: yes
Foam in Box: yes

Price:
4500.- EUR plus VAT

Left side:
Front surface at 67% sub-aperture (4")
 

Right side:
Back surface at 95% aperture

Left side:
Test protocol from Coastline Optics, for the same 6" flat, tested against a 12" flat

Results for 95% aperture:
PV 0.027 waves
RMS 0.004 waves

Click to enlarge
 




Zygo® 6" Transmission Flat

AE stock number: 31

Phase map is for 95% aperture

Wood Box: yes
Foam in Box: no

Price:
4200.- EUR plus VAT


Zygo® 6" Transmission Flat

AE stock number: 56

upper phase map is for 95% aperture

lower phase map is for 70% aperture

Wood Box: no
Foam in Box: no

Price:
3200.- EUR plus VAT

Zygo® 6" Reference Flat

AE stock number: 57

phase map is for 95% aperture

Wood Box: no
Foam in Box: no

Price:
3800.- EUR plus VAT

Zygo® 4" Dynaflect Transmission Flat

AE stock number: 90

Wood Box: yes
Foam in Box: no

Price:
2800.- EUR plus VAT

WYKO 4" Transmission Flat

This flat has a coating for testing of highly reflective samples. In very good condition.

AE stock number: 55

Wood Box: yes
Foam in Box: yes

Price:
3000.- EUR plus VAT

VEECO 4" Transmission Flat

This flat has a coating for testing of highly reflective samples. In good condition.

AE stock number: 49

Wood Box: no
Foam in Box: no

Price:
2200.- EUR plus VAT

Zygo® 4" Reference Flat

AE stock number: 92

It can't be used as a transmission flat because the back  side has too much curvature.

Wood Box: yes
Foam in Box: no

Price:
1800.- EUR plus VAT

Zygo® 4" Reference Flat

AE stock number: 46

It can't be used as a transmission flat because the back  side has too much curvature.

Wood Box: yes
Foam in Box: yes

Price:
2200.- EUR plus VAT

Zygo® 4" Dynaflect Transmission Flat

AE stock number: 65

Wood Box: yes
Foam in Box: yes
 

Includes original Zygo test report:
PV 0.036
RMS 0.006

Price:
3000.- EUR plus VAT
 

Zygo® 4"  Transmission Flat

AE stock number: 64

Wood Box: no
Foam in Box: no

Price:
2600.- EUR plus VAT

Zygo® 4" Transmission Flat

AE stock number: 93

Wood Box: yes
Foam in Box: yes

Includes original Zygo test report:
PV 0.039
RMS 0.006

Price:
2700.- EUR plus VAT

Phase Shift Technology
4" Transmission Flat

This flat has a coating for testing of highly reflective samples. In very good condition.

AE stock number: 95

Wood Box: no
Foam in Box: no

Price:
2400.- EUR plus VAT

Zygo® 4" Reference Flat

This RF has a 90% Aluminium coating and is mounted backwards in the Zygo bayonet

AE stock number: 68

Wood Box: yes
Foam in Box: yes

Price:
1800.- EUR plus VAT


Zygo® 4" Dynaflect Transmission Flat

Serial Number:  96054
AE stock number: 61
 

This TF has a damage in the coating, about 8mm x 5mm, which will produce a very bad PV reading (see upper phase map)
In the lower phase map I masked out this damage.

This TF is perfectly usable if your test piece is smaller than 70mm diameter, or if you only want to inspect the straightness of the fringes visually.

Wood Box: no
Foam in Box: no

Price:
1400.- EUR plus VAT

Click here for the Calibration Certificate from PTB, Germany's National Metrology Institute, made in June 2013:
Page 1   Page 2 Page 3   Page 4 Page 5
This calibration is also available as a MetroPro *.dat file

RMS over full 12" aperture: 0.011 waves @ 633nm
RMS over central 10" aperture: 0.009 waves @ 633nm
RMS over central 8" aperture: 0.006 waves @ 633nm
RMS over central 6" aperture: 0.003 waves @ 633nm


 
 

 

Zygo® 12" Reference Flat

-- Zerodur
-- 90% Aluminium coating
-- in perfect condition
-- including calibration certificate from PTB, see left side

Price:
20000.- EUR plus VAT

Zygo® 4" Transmission Flat
 

Serial Number:  unknown
AE stock number: 60

Wood Box: yes
Foam in Box: no

Price:
1900.- EUR plus VAT

Zygo® 4" Transmission Flat
 

Serial Number:  unknown
AE stock number: 2

Wood Box: yes
Foam in Box: yes

Price:
1800.- EUR plus VAT
 

Wyko 100mm Transmission Flat
 

Serial Number:  unknown
AE stock number: 8

Wood Box: no
Foam in Box: no

Price:
1300.- EUR plus VAT

4" Transmission Flat, unknown Manufacturer (maybe Zygo)

Serial Number:  unknown
AE stock number: 30

Wood Box: no
Foam in Box: no

Price:
1800.- EUR plus VAT

Zygo® 33mm Transmission Flat
 

Serial Number:  (00138)
AE stock number: 13

Wood Box: no
Foam in Box: no
 

Price:
700.- EUR plus VAT

Zygo® 33mm Transmission Flat

Serial Number:  (00136)
AE stock number: 9

Wood Box: no
Foam in Box: no

Price:
900.- EUR plus VAT

Zygo® 33mm Transmission Flat

AE stock number: 51

Wood Box: no
Foam in Box: no

Price:
700.- EUR plus VAT

Zygo® PRISM QUICK-CHECK

-- Zerodur Mirrors
-- usable mirror dimensions: 85mm x 55mm
-- Mirror distance: 101mm
-- 3-axis-stage (tip, tilt, rotation)
-- has some small damages on the reference mirrors
-- includes wood box with foam

Price:
7000.- EUR plus VAT



Used Aperture Converters
Zygo Aperture Converter 4" / 6"

In very good condition !

AE stock number: 58

Wood Box: yes
Foam in Box: no

Price:
6000.- EUR plus VAT

Zygo Aperture Converter 4" / 6"

In very good condition !

AE stock number: 45

Wood Box: no
Foam in Box: no

Price:
5900.- EUR plus VAT

Zygo Aperture Converter 4" / 33mm

In very good condition !

AE stock number: 63

Wood Box: no
Foam in Box: no

Price:
3900.- EUR plus VAT

Zygo Aperture Converter 4" / 33mm

In very good condition !

AE stock number: 59

Wood Box: yes
Foam in Box: yes (bot not original)

Price:
4000.- EUR plus VAT


Zygo Aperture Converter 4" / 33mm

Unfortunately this aperture converter has some fungus on the inner side of the 4" lens, about 6mm wide, see the lower picture. 
The other lens on the 33mm side looks very good. 

AE stock number: 42

Wood Box: yes
Foam in Box: no

Price:
2000.- EUR plus VAT

Zygo Aperture Converter 4" / 25mm

In very good condition !
Includes original Zygo test report from 2004

AE stock number: 40

Wood Box: yes
Foam in Box: yes 

Price:
4200.- EUR plus VAT

Zygo Aperture Converter 4" / 25mm

In very good condition !

AE stock number: 41

Wood Box: yes
Foam in Box: no 

Price:
3950.- EUR plus VAT



Used Reference Spheres
zygo® Reference Sphere 37mm f/0.68 4%
 

-- 0.038 wave PV, 0.006 wave RMS,
-- used, in perfect condition,
-- original test certificate is included,
-- including wood box,
-- Price 2000.- EUR plus VAT

AE stock number: 71

zygo® Reference Sphere R=12.7mm, f/0.51 4%

-- used, in perfect condition,
-- no test certificate included,
-- including wood box,
-- Price 1500.- EUR plus VAT

AE stock number: 72

zygo® Reference Sphere 37mm f/0.68 4%

-- used, in perfect condition, 
-- no test certificate included,
-- including wood box,
-- Price 1500.- EUR plus VAT

-- AE stock number: 73

zygo® Reference Sphere 37mm f/0.68 4%

-- 0.046 waves PV, 0.006 waves RMS
-- used, in perfect condition, 
-- original Zygo interferogram is included,
-- including wood box, no foam, 
-- Price 1800.- EUR plus VAT

AE stock number: 74


zygo® Retroreflector 7003A

-- very useful for critical alignment of transmission flats and apertue converters, see Zygo's application notes AN-0024 and AN-0029
-- the retroreflector can also be mounted from the other side
-- fits in Zygo's 4" XYZ stage, see next picture (the stage is not included)

-- Price 700.- EUR plus VAT


Used Objectives for Interference Microscopes:

Wyko PX 1.5 Michelson Objective 1500.- EUR plus VAT
Wyko PX 2.5 Michelson Objective 1500.- EUR plus VAT
Wyko PX 5 Michelson Objective 1500.- EUR plus VAT
Wyko PX 20 Mirau Objective 1500.- EUR plus VAT
Wyko PX 40 Mirau Objective 1500.- EUR plus VAT
Wyko IX 50 Objective   1500.- EUR plus VAT
Nikon/Zygo MPlan 2.5 TI / 0.075  Michelson Objective 1500.- EUR plus VAT


Yahoo Group "Interferometry", especially for any questions about interferometric testing of astronomical mirrors:   Yahoo Group Interferometry

Optische Formelsammlung: Allgemein      Optical formula collection: General

Optische Formelsammlung: Interferometrie      Optical formula collection: Interferometry

Linsen, Spiegel, optische Bauteile
 

If you need lenses, mirrors or other optical parts, have a look at Surplus Shed: