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 Interferometer (und Teile)
  Used interferometers (and parts)

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:


zygo® GPI-XP Interferometer

-- made in October 2003
-- includes option for selecting the polarization of the output beam (horizontal/vertical/circular)
-- Remote control with cable
-- small monochrome video monitor
-- Dell PC with Dell TFT screen, keyboard and mouse, Windows2000
-- MetroPro 7.14.0 incl. licence and dongle (Licence is from previous owner)
-- all required cables
-- Original manuals in englisch, MetroPro software and operating system on CD-Rom
-- I have tested the system and it's working fine. All parts are in very good condition, almost like new and less than 6 years old. It seems the previous owner used this interferometer in a clean room.
-- The transmission flat is not included.
 

This instrument is in stock, waiting that you buy it. If you are interested, you are welcome to visit me. Bring your own test pieces with you and I will demonstrate you this intererometer. 

Price: 36000.- EUR plus VAT

Not available at the moment, it's rented out.

Will be available again in March 2010


zygo® MK-2 Interferometer

-- Zoom 1x - 6x
-- Remote control for Zoom, Focus, fast switching between Align and View mode
-- Aperture 4" (102mm)
-- The original Vidicon camera has been replaced by a modern CCD camera, it's a SONY XC-ST51CE, vertical 50 Hz, horizontal 15625 Hz, alternatively a 60Hz camera is possible too
-- line voltage: 120V or 230V, please specify
-- For interferogram analysis I recommend  IntelliWave Software from Engineering Synthesis Design, Inc. (not included)
-- The 4" transmission flat, the 4" return flat and the video monitor shown in the picture are not included.

-- Used, in working condition, well collimated, including 4 weeks warranty

-- Delivery time about 8 weeks 

Price:
9200.- EUR plus VAT
 

Please note: We have many interferometers in stock, and we refurbish them one after the other. This takes a lot of time ...
If you are interested in a refurbished interferometer, please let us know and we put you on the wait list.


zygo® MK-3 or MK-4 Interferometer

-- Zoom 1x - 6x
-- Remote control for Zoom, Focus, fast switching between Align and View mode
-- Aperture 4" (102mm)
-- The original Vidicon camera has been replaced by a modern CCD camera, it's a SONY XC-ST51CE, vertical 50 Hz, horizontal 15625 Hz, alternatively a 60Hz camera is possible too
-- Including 4" Phase Shifter from Zygo®
-- Including high voltage amplifier from ASTRO ELECTRONIC, built into the MK-3 or MK-4
-- line voltage: 120V or 230V, please specify
-- For interferogram analysis I recommend  IntelliWave Software from Engineering Synthesis Design, Inc. (not included)
-- Transmission sphere is not included
-- Used, in working condition, well collimated, including 4 weeks warranty 
-- Delivery time about 8 weeks

Prices:
MK-3  12950.- EUR plus VAT
MK-4  13450.- EUR plus VAT

Please note: We have many interferometers in stock, and we refurbish them one after the other. This takes a lot of time ...
If you are interested in a refurbished interferometer, please let us know and we put you on the wait list.



WYKO 6000 Interferometer

6x Zoom, 6" aperture, new CCD camera, including built-in Phase Shifter and 6" transmission flat. 
I still need a few weeks to modernize this instrument.
The original remote control was missing and I did already make a new one, which controls zoom, brightness, focus and switching between align/view modes.
The interferometer will get a new high voltage amplifier for the phase shifter.
When I've finished refurbishing this instrument, it will be ready to be connected to a PC with IntelliWave, Durango or 4Sight software.

Please let me know if you are interested.

Price: 18000.- EUR plus VAT


New Transmission spheres from 
MPF optics
 

Surface Accuracy:
1/10 or 1/20  wave PV

Standard Zygo Bayonet

Please ask for prices
 
 

New: A special version with antireflective coating for Ritchey-Common Test is available as well.

New:
f/1.1, f/1.9, f/4.8 Transmission spheres
f/35 convergers and divergers
6" Super f/1.1 Transmission Sphere, with 6" input, internal beam expander to 8" diameter, and true 6" f/1.1 output 

 

Objective Type: 4" f/0.75 4" f/1.1 4" f/1.5 4" f/1.9 4" f/3.3 4" f/4.8 4" f/7.2 4" f/11 4" f/24 4" f/24
Diverger
4" f/35 4" f/35
Diverger
90mm Flat  4" Flat 
Numerical Aperture 0.67 0.48 0.33 0.26 0.15 0.10 0.07 0.05 0.02 -0.02 0.01 -0.01 - -
F-Number 0.75 1.1 1.5 1.9 3.3 4.8 7.2 11 24.3 -23.9 34.9 -34.9 - -
Angular Aperture 82.3° 55.6° 38.9° 30.3° 17.3° 12.1° 8.0° 5.4° 2.36° 2.4° 1.5° 1.5° - -
Radius of Reference Surface RM  [mm] 48.174 65.50 121.44 163.12 300.69 449.0 700.35 1051.7 2449.4 2449.4 3520 3500 - -
Maximum outside Sample Diameter DM allowed when accommodating Radii up to RM  [mm] 63.4 61.0 80.9 85.3 90.2 94.5 97.4 98.5 100.8 102.5 101.6 101.6 90 101.6
Maximum convex (concave) Radius that can be tested when outside Sample Diameter is larger than DM  [mm] 47 65 120 162 299 445 698 1049 2440 (2440) 3500 (3490) - -
Diameter x Length [mm] 127 x 70 127 x 70 127 x 70 127 x 65 127 x 70 127 x 70 127 x 70 127 x 70 127 x 45 127 x 45 127 x 45 127 x 45 127 x 45 127 x 45
Weight [kg] 2.41 2.3 1.72 1.65 2.08 1.7 1.63 1.44 0.9 0.9 0.9 0.9 0.9 0.9
Operating Wavelength [nm] 632.8 632.8 632.8 632.8 632.8 632.8 632.8 632.8 632.8 632.8 632.8 632.8 632.8 632.8
Input Diameter [mm] 101.6 101.6 101.6 101.6 101.6 101.6 101.6 101.6 101.6 101.6 101.6 101.6 90 101.6
Reference Element Fused Silica Fused Silica Fused Silica Fused Silica Fused Silica Fused Silica Fused Silica Fused Silica Fused Silica Fused Silica Fused Silica Fused Silica Fused Silica Fused Silica
Wavefront Deformation for single Pass
[Waves PV]
<1.5 <1.5 <1.5 <1.5 <1.0 <1.0 <0.5 <0.5 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4
Operating Temperature [°C] 22 +- 8 22 +- 8 22 +- 8 22 +- 8 22 +- 8 22 +- 8 22 +- 8 22 +- 8 22 +- 8 22 +- 8 22 +- 8 22 +- 8 22 +- 8 22 +- 8
All MPF Transmission Spheres come in a wood box and include a test certificate.

CaliBall TM
 

CaliBall is a 25.4mm diameter, high precision silicon nitride ball and kinematic mount used to calibrate phase-measuring interferometers by determining the errors in the transmission-sphere reference-surface.
The CaliBall is located with its center at the focus of the transmission sphere and aligned to better than one fringe. A measurement of the ball is taken, the ball picked up, arbitrarily rotated and replaced on its mount. The center of the ball will return to the original position due to the kinematic mount. Another measurement of the ball is then taken. 

This process is repeated about a dozen times and the interferograms averaged. The average represents the errors in the transmission sphere and interferometer because the ball is extremely round and the small imperfections of the ball average to zero. The calibration can be done in as little as 10 minutes and the result is difficult to dispute. Best used with low F/# transmission spheres.

Price:  650.- EUR plus VAT 
 
 
 

 

CaliBall2 TM
 

This is the second version of the CaliBall, which is used if the optical axis is horizontal. It fits into a standard 4" Zygo bayonet mount.

Price:  800.- EUR plus VAT 

 


Point Diffraction Interferometer

The main part of a Point Diffraction Interferometer is the PDI plate, which is a fused silica substrate with a 0.2% transmission Chrome coating, and pinholes in many different sizes from 1µm to 100µm.

Click here for more informations


Used Transmission Spheres

Surface Error
(Average of 10 measurements with CaliBall)
Description            Pictures
Zygo®
4" f/0.75

Serial Number:
D152 T34

Wood Box: yes
Foam in Box: no

Notes:
Has a very small damage on the reference surface, at 1 o'clock position

Price:
5000.- EUR plus VAT 

Zygo®
4" f/1.5

Serial Number:
91159

Wood Box: yes
Foam in Box: no

Notes: Includes original Zygo test report,
PV 0.041 wave,
RMS 0.007 wave

Price:
6500.- EUR plus VAT 

Zygo®
4" f/3.3

Serial Number:
D152 T37

Wood Box: yes
Foam in Box: no

Notes: 
Has interal dust between the lenses, and a small damage on the reference surface (black dot a 3 o'clock)

Price:
3000.- EUR plus VAT 

Zygo®
4" f/3.3

Serial Number:
D152 T55

Wood Box: no
Foam in Box: no

Notes: 
Has several small damages on the reference surface

Price:
2500.- EUR plus VAT

Zygo®
4" f/3.3

Serial Number:
D152 T35

Wood Box: no
Foam in Box: no

Notes:
Has several small damages on the reference surface, and has internal dust between the lenses

Price:
3500.- 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
Zygo® 4" Transmission Flat, much better than 1/20 wave
 

Serial Number:  95101

Wood Box: yes
Foam in Box: no

Notes:
Comes with original Zygo test protocol, 
profile along vertical diameter: PV 0.017   RMS 0.005
profile along horizontal diameter: PV 0.026   RMS 0.008

Price:
1800.- EUR plus VAT

Not available at the moment, it's rented out.

Will be available again in March 2010



Used 3-axis, 4-axis and 5-axis Stages
Wyko Ultramount 6" Tip/Tilt Stage
with 6" Optics Holder

weight 9.1 kg
used, in very good condition

Price:
2400.- EUR plus VAT

6" X/Y Translation and Tip/Tilt Stage
with 6" Optics Holder
 

X/Y travel range about +-10mm
cast iron, weight 19.7 kg, very heavy !
used, in very good condition

Price:
2600.- EUR plus VAT

Zygo® 6" Tip/Tilt Stage
with 6" Optics Holder

360° rotation is possible as well
weight 5.3 kg
used, in very good condition

Price:
2400.- EUR plus VAT

Zygo® 6" Tip/Tilt Stage

weight 4.1 kg 
used, in very good condition

Price:
2000.- EUR plus VAT

SOLD


Used Reference Spheres
zygo® Reference Sphere 25mm f/0.51 R=12.7mm 4%, 
used, in good condition, 
including wood box, no test certificate included,
price 1700.- EUR plus VAT
 

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
 

zygo® Transmission Flat 33mm 4%,
used, in good condition,
no wood box included, 
no test certificate included,
price 1000.- EUR plus VAT



Interferogram Analysis Software, Market Overview:
 
Product Name Manufacturer or Author
MetroPro Zygo®
http://www.zygo.com
IntelliWave Engineering Synthesis Devices, Inc.
http://www.engsynthesis.com
Durango Diffraction International
http://www.diffraction.com
4Sight 4D Technology
http://www.4dtechnology.com
µShape Fisba
http://www.fisba.com
Intomatik-S
Intomatik-N
Möller-Wedel
http://www.moeller-wedel-optical.com
QuickFringe Diffraction Limited
http://www.cyanogen.com
Fringe XP,
Shareware
Dave Rowe, download the software from the files section in the Yahoo/Interferometry Group:
http://groups.yahoo.com/group/interferometry/
OpenFringe,
GNU Public General License
Dale Eason
http://sourceforge.net/projects/openfringe/
IFA OEG GmbH
http://www.oeg-messtechnik.de
AtmosFringe Massimo Riccardi
http://www.atmos-software.it
XtremeFringe Indizen Optical Technologies (IOT) 
http://www.iot.es/XtremeFringe
Plugins for ImageJ Joachim Wesner
http://www.joachim-wesner.net/ImageJ/
Fringe Application Smarttech 
PDF: http://www.smarttech.pl/downloads/fringe_pl.pdf
Demo Version: http://www.smarttech.pl/downloads/fringe_demo.exe
Program INTtoTOP Optical Technologies
http://www.hightechoptica.ru/eng/tesaf.html
Article: http://jot.oa.org/abstract.cfm?id=67793
if I forgot any interferogram analysis software in this overview, please let me know!


Objectives for Wyko Topo 3D Interference Microscope:

1.5x Michelson  1800.- EUR incl. VAT (1512.60 EUR overseas)
5x Michelson  1800.- EUR incl. VAT (1512.60 EUR overseas)
20x Mirau  1800.- EUR incl. VAT (1512.60 EUR overseas)
40x Mirau  1800.- EUR incl. VAT (1512.60 EUR overseas)


STACIS 2000
Active Control Isolation System

-- manufactured by Barry Controls
-- used, guaranteed in working condition, 2 weeks warranty
-- line voltage: 230V
-- total load: 1905 - 4770 kg
-- 6 active degrees of freedom
-- active bandwidth 0.3 to 250 Hz
-- including manual, PC diagnostics software, and all cables
 

Price: 4000.- EURO plus VAT


How to modernize a Zygo® MK-2, MK-3 or MK-4 Interferometer:
(1) Remove the old vidicon and diode matrix cameras and replace them by a single modern CCD camera.
A neutral gray filter is required in front of the camera. I don't recommend to make the exposure time too small, because that would freeze the motion of the rotating diffuser disk. 

(2) Remove the old 115V transformer and replace it by the ASTRO ELECTRONIC power supply. This board supplies 2x12V AC for the motors, stabilized +12V for the CCD camera, and also unstabilized 15V or 30V for a laser power supply, if required.
Mains voltage can be either 115V or 230V.

(3) For the MK-3 or MK-3, install the ASTRO ELECTRONIC piezo amplifier. For a description see below.

(4) The original Zygo® laser power supply can normally be changed from 115V to 230V internally.

(5) Adjust all optical parts. Be prepared that this work may take a few days. A description for full adjustment would fill a book ... 

(6) A small hint for focus adjustment:
Set the zoom to the 75mm position and move the camera until the image is sharp. Then set the zoom to the 12.5mm position and move the whole zoom objective until the image is sharp. Repeat these steps a few times. Do not turn the focus ring of the zoom, the correct setting is "infinite".


ASTRO ELECTRONIC PIEZO AMPLIFIER

-- Output voltage range: -400V ... +400V
-- Input voltage range: -10V ... +10V (or -5V ... +5V)
-- Gain: -40 (or -80)
-- Input impedance: 50kOhm (or 25kOhm)
-- Output connector: HV-BNC or BNC, please specify when ordering
-- Input connector: BNC
-- line voltage: 115V or 230V, please specify when ordering
-- Fits perfectly to the Zygo® MK-3 or MK-4 phase shifter
-- Size: 164mm x 105mm (130mm at bottom) x 66mm

Price: 950.- EURO incl. VAT
         (798.32 EURO overseas)


How to modernize a Wyko Siris Interferometer:

The Wyko Siris is a beautiful  small Twyman-Green interferometer.
It has an internal reference mirror with a piezoelectric phase shifter.
There is a movable shutter in front of the reference element. It it's closed, the instrument can be used with an external Fizeau reference element.

There exist several different versions of the Siris, I've seen it with 840nm semiconductor lasers and with 633nm He-Ne lasers.
In the original configuration, the laser is in an extra housing on top of the interferometer. This modified Siris does now have an internal He-Ne laser, a new CCD camera, and an internal power supply. You only have to connect the mains power, a video monitor and the remote control.

The laser beam is directed by two small adjustable mirrors (with a small negative lens in the middle between them) to a spatial filter assembly.
 

WYKO SIRIS in original configuration (not modified): 2500.- EUR incl. VAT 


ZYGO® Video Sync Combiner

-- untested as-is

Price: 100.- EURO incl. VAT
(84.03 EURO overseas)


Diode Matrix camera from a ZYGO® MK-3 Interferometer

-- I have two of them
-- untested as-is 

Price: 100.- EURO incl. VAT
(84.03 EURO overseas)


Transformer for Zygo® MK-II or MK-III

in working condition, mains voltage is 115V AC, secondary voltage is 2 x 12V without load.

Price 20.- EURO incl. VAT
(16.81 EURO overseas)


BURLE CCD Camera
TC301E

2/3" CCD sensor
120V AC 60 Hz
C-Mount
In working condition

Price 100.- EURO incl. VAT
(84.03 EURO overseas)


HP Computer for
COBRA Controller

It does power up, but is otherwise untested. What you see is what you get. No manual, no schematics, no warranty.

Price: 200.- EURO incl. VAT
(168.07 EURO overseas)

Picture of back side:

-- Wyko Cobra Interface
-- HP Human Interface, RS232, SPKR, HP-HIL KYBD, HP-IB
-- HP98543A, seems to be the video card with RGB outputs 


WYKO SIRIS
COBRA Controller

This is the electronics box from a SIRIS interferometer.
It does power up, but is otherwise untested. What you see is what you get. Some (but not all) cables included. No manual, no schematics, no warranty. I have two of them. 

Price: 100.- EURO incl. VAT
(84.03 EURO overseas)


WYKO SIRIS

This is the camera from a WYKO SIRIS Interferometer. I sell it untested as-is. The rest of the interferometer was in like-new condition.

The CCD chip is a RA-0100AAQ-011 from Reticon.
Sensitive area is about 6mm x 6mm.

With cable and connector. I don't have the rest of the electronics or any schematic diagrams.

Price: 100.- EURO incl. VAT
(84.03 EURO overseas)
 

WYKO SIRIS

This is the camera from a WYKO SIRIS Interferometer. I sell it untested as-is. The interferometer was unopened when I got it, with the factory seals not removed.

This camera has a giant CCD chip:
It's a RA-0226BAQ-011 from Reticon.
Sensitive area is about 10.2mm x 10.2mm.

With cable and connector (not visible in picture). This camera fits to the COBRA controller above, but I don't have the cable that connects the SIRIS with the COBRA. I don't have any schematic diagrams.

Price: 100.- EURO Europe incl. VAT
(84.03 EURO overseas)


WYKO SIRIS

This is the infrared diode laser from a WYKO SIRIS Interferometer. It is in working condition. The type plate says 840nm wavelength and 2.0 mW maximum power. I do not need the diode laser because I built a 633nm He-Ne laser into the SIRIS.
The key for the switch is missing, but it's absolutely no problem to replace the whole switch, or simply shorten the wires.
Two adjustable mirrors and one lens inside. One spatial filter with pinhole and microscope objective inside. Laser radiation exit is at the bottom of the unit.
I think the supply voltage is about 24-28 VDC.
A Wyko technican told me that the coherence length is several meters if the diode current is adjusted correctly at the multi-turn potentiometer.

Price: 300.- EURO incl. VAT
(252.10 EURO overseas)


WYKO LADITE

This is the video camera from a WYKO LADITE Interferometer. I sell it untested as-is. 
Cable is included. I don't have the rest of the electronics or any schematic diagrams.

Price: 100.- EURO incl. VAT
(84.03 EURO overseas)


WYKO LADITE

This is the electronics board from a WYKO LADITE Interferometer. I sell it untested as-is. 
I don't have the rest of the electronics or any schematic diagrams.

Price: 30.- EURO incl. VAT
(25.21 EURO overseas)