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, neue und gebrauchte Zubehörteile
Used interferometers, new and used accessories
If you want to see our new arrivals
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For new or used translation and tip/tilt stages click here

For NEW reference optics click here

For USED reference optics click here


Refurbished zygo« MK-4 Interferometer with computer and IntelliWave software

-- Zoom 1x - 6x
-- New 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-- The original Vidicon camera has been replaced by a modern USB camera with 1000x1000 pixels resolution, ready to be connected to a PC with IntelliWave for interferogram analysis
-- Including 4" Phase Shifter from Zygo®
-- Including high voltage amplifier from ASTRO ELECTRONIC, built into the MK-4
-- Mains voltage: 120V or 230V, please specify
-- For interferogram analysis I recommend  IntelliWave Software from Mahr 
-- Transmission sphere of flat is not included
-- Used, in working condition, well collimated, including 4 weeks warranty 
-- Immediately available, delivery time for IntelliWave is about 4 weeks

Prices:
Refurbished MK-4 interferometer: 14500.- EUR plus VAT
IntelliWave LE-2 package: 8400.- EUR plus VAT
New PC with english version of Windows 10, IntelliWave already installed: 600 EUR (without TFT screen)

already sold    but I have more in stock


zygo® MK-3 Interferometer with vertical mount

-- 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-- The original Vidicon camera has been replaced by a modern USB camera with 1000x1000 pixels resolution, ready to be connected to aPC with IntelliWave for interferogram analysis
-- Including 4" Phase Shifter from Zygo®
-- Including high voltage amplifier from ASTRO ELECTRONIC, built into the MK-3
-- line voltage: 120V or 230V, please specify
-- For interferogram analysis I recommend  IntelliWave Software from Mahr 
-- includes Tip/Tilt holder for test piece
-- Transmission sphere of flat is not included
-- Used, in working condition, well collimated, including 4 weeks warranty 
-- Delivery time about 8 weeks

Prices:
MK-3 with vertical mount:  14950.- EUR plus VAT
IntelliWave LE-2 package: 8400.- EUR plus VAT
New PC with english version of Windows 10, IntelliWave already installed: 600 EUR (without TFT screen)

I have two in stock. With or without phase shifter.


zygo® GPI-LC Interferometer with vertical mount

-- Aperture 4" (102mm)
-- New CCD camera
-- line voltage: 120V or 230V, please specify
-- This interferometer is not for computer analysis. Only vsual inspection of fringes on a video monitor
-- includes Tip/Tilt holder for test piece
-- Transmission sphere of flat is not included
-- Holder for video monitor is included (not visible in picture)
-- Used, in working condition, well collimated, including 4 weeks warranty 
-- Delivery time about 8 weeks

Prices:
GPI-LC with vertical mount:  12000.- EUR plus VAT
New Video monitor: 210.- EUR plus VAT 


This is an adapter to bring the optical axis of a GPI interferometer 320mm above the table surface.

I did make it myself, but don't need it any longer.
Made of 20mm and 30mm thick beech multiplex plates and stainless steel screws.
The GPI's feet fit exactly in flat bores (about 2mm deep, difficult to see in the picture) on top of this adapter.
Can be disassembled in 4 parts for smaller shipping size.
Very good condition, like new.

Price 200.- EUR plus VAT 
 


Repair of Zeiss IMO 4111 interferometer modules is possibe.

-- Laser or camera replacement
-- Electronics repair
-- Cleaning
-- Adjustment

Please ask.
Repair of "INKO" Interferometer is possibe.

-- The original mercury lamp is no longer available.
-- It can be replaced by a semiconductor laser.
-- You can choose between red (652nm) or green (532nm).

Please ask.


Mitsubishi Video Printer

-- Can be used to print out interferograms from analog video signals
-- Line voltage: 120V, you will need a transformer for 230V
-- Transformer is available upon request
-- Accepts 50 Hz CCIR signals and 60 Hz EIA signals
-- 108 - 110mm thermo paper, one roll is included
-- positive or negative printout
-- brightness can be adjusted
-- prints out what you see on your video monitor
-- Used, in working condition, 4 weeks warranty 

Price: 200.- EUR plus VAT


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 Mahr (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 Mahr (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  13000.- EUR plus VAT
MK-4  14500.- 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.


Diopter Telescope from M÷ller-Wedel

-- used, in very good condition, including original box
-- For measuring negative (concave) lenses from -5.8 to +0.2 diopters

Price: 150.- EUR plus VAT

Diopter Telescope from Carl Zeiss Jena

-- used, in good working condition, including original box
-- For measuring lenses from -2.0 to +2.0 diopters

-- The measurement range can be extended by inserting additional lenses between the instrument and the test lens. For example when you use a -3 lens, the measurement range is from -1.0 to +5.0 diopters. Five lenses are included: -5, -4, -3, +4 and +5. The +3 lens is missing and the -4 lens is damaged at the edge (but still usable).

Price: 200.- EUR plus VAT  already sold

Russian Diopter Telescope

-- used, in very good condition
-- For measuring lenses from -2.0 to +2.0 diopters

Price: 120.- EUR plus VAT


New replacement cameras for Zygo GPI-LC

-- The original cameras (left side in the picture) fail because the electrolytic capacitors degrade.
-- This (right side in the picture) is a replacement camera designed by Astro Electronic
-- The mounting plate has the same dimensions as the original camera module.
-- The CMOS chip has the same size and is located at the same position.
-- The module has an on-screen menue. It can be configurted by a small joystick in the cable. The configuration is only required one time. The parameters are saved in the module.
-- Supply voltage is 12V, same as the original camera.
-- Possible adjustments:
  -- Exposure time, automatic or fixed
  -- Automatic gain control can be deactivated.
  -- The image can me mirrored or rotated.
  -- Monochrome or color
  -- 50Hz PAL or 60Hz NTSC (Most original cameras are 60Hz NTSC)
  -- and much more
  -- Instructions for the menue structure are included.

-- Available without lens (as shown in picture) or with lens.

Price: 500.- EUR plus VAT


Video Monitor, black&white

-- new in original box
-- 9" (left side)  out of stock
-- or 12" (right side), dimensions: 31cm x 31cm x 31cm still available
-- or 14" (not shown in picture)  still available
-- mains voltage 230V
-- BNC video input and output

Price: 210.- EUR plus VAT
 
 
 
 

Also available:
14" high resolution PAL color monitor with audio,
same price    still available
 


Monochromator Oriel 77250

-- I have two units in stock. The left one has a small gear wheel at the dive shaft, the right one has a small crank handle.
-- Both unis have a 77298 grating installed, which has 1200 lines/mm and a peak efficiency of 80% at 350nm blaze wavelength.
-- calibrated mechanical wavelength counter
-- Both units are used, in good working condition.

Price: 900.- EUR each, 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


Melles Griot Collimation Tester

-- Aperture 50mm
-- Part number 09SPM003
-- used, in good condition

Price:
400.- EUR plus VAT



Used Autocollimators
Autocollimator, unknown manufacturer

-- Bausch & Lomb 48mm/0.08 microscope objective 
-- 45° prism, can be rotated 360°
-- 10x Ramsden eyepiece, made in Germany
-- with 0..10 reticle, only one axis
-- on linear stage, travel range 16.6mm
-- 6V lamp
-- weight 4.2kg
-- used, in good working condition

Price:
250.- EUR plus VAT

Hilger & Watts Model B-4990

in very good condition. Resolution 0.2 arc seconds. 12 Volts lamp.
The telescope can be turned by 90 degrees.
Including original wood box.

Price:
2000.- EUR plus VAT

this one is already sold, but I have some more in stock, please ask

Hilger & Watts Clinometer Model 142/43

in good condition. Resolution 10 arc seconds. 
There is some dust on the optics, but readability is not affected. 
Including lamp and instruction manual.
The eyepiece can be turned 360 degrees.
Including original wood box.

Price:
800.- EUR plus VAT



 
Cable for Zygo Maxim GP Profiler

price 50.- EUR 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: 50.- EURO incl. VAT
(42.02 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)


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)


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

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