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
Neue Referenz-Objektive für Interferometer
  New reference optics for interferometers
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For used interferometers click here

For USED reference optics click here

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


New Transmission spheres from MPF-optics
Surface Accuracy: 1/10, 1/20 or 1/30 wave PV, or better upon request

Standard Zygo Bayonet

Operating wavelength: 632.8nm

Operating temperature range: 22 +- 8 °C

Material of reference element: Fused Silica

Please ask for prices
 
 

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

Customer-specific transmission spheres with any f/number above f/15 are possible, converger or diverger, typical lead time 12 weeks  

4" Objectives: 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
Converger
4" f/7.2
Diverger
4" f/11
Converger
4" f/11
Diverger
Numerical Aperture 0.67 0.46 0.33 0.26 0.15 0.10 0.07 0.07 0.05 0.045
F-Number 0.75 1.1 1.5 1.9 3.3 4.8 7.2 7.2 11 11
Angular Aperture 82.3° 55.6° 38.9° 30.3° 17.3° 12.1° 8.0° 8.0° 5.4° 5.4°
Radius of Reference Surface RM  [mm] -48.17 -65.50 -121.44 -163.12 -300.69 -449.0 -700.35 700.35 -1051.7 1051.7
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 97.5 97.5 98.5 98.5
Maximum convex (concave) Radius that can be tested when outside Sample Diameter is larger than DM  [mm] 47 65 120 162 299 447 695 -705 1045 -1055
Input Beam Diameter [mm] 101.6 101.6 101.6 101.6 101.6 101.6 101.6 101.6 101.6 101.6
Diameter x Length [mm] 140 x 68 140 x 72 140 x 72 140 x 72 140 x 72 140 x 72 140 x 72 140 x 68 140 x 72 140 x 72
Weight [kg] 2.1 2.5 1.7 1.7 2.0 2.0 1.6 1.5 1.6 1.5
Wavefront Deformation for single pass
[Waves PV]
<1.5 <1.5 <1.5 <1.5 <1.0 <1.0 <1.0 <1.0 <0.5 <1.0

 
Long Radius 4" Objectives: 4" f/15
Converger
4" f/15
Diverger
4" f/25
Converger
4" f/25
Diverger
4" f/35
Converger
4" f/35
Diverger
90mm
Flat 
4"
Flat 
Numerical Aperture 0.03 0.03 0.02 0.02 0.01 -0.01 - -
F-Number 15 15 24.3 24.3 34.9 34.9 - -
Angular Aperture 3.8° 3.8° 2.4° 2.4° 1.5° 1.5° - -
Radius of Reference Surface RM  [mm] -1517.0 1517.0 -2449.4 2449.4 -3520 3500 - -
Maximum outside Sample Diameter DM allowed when accommodating Radii up to RM  [mm] 100.0 100.0 100.0 100.0 100.0 100.0 90 101.6
Maximum convex (concave) Radius that can be tested when outside Sample Diameter is larger than DM  [mm] 1520 -1510 2460 -2440 3500 -3490 - -
Input Beam Diameter [mm] 101.6 101.6 101.6 101.6 101.6 101.6 90 101.6
Diameter x Length [mm] 140 x 45 140 x 45 140 x 45 140 x 45 140 x 45 140 x 45 140 x 45 140 x 45
Weight [kg] 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0
Wavefront Deformation for single pass
[Waves PV]
<0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5

 
6" Objectives: 6" f/1.1 6" f/1.1s 6" f/2.2 6" f/5.0 6" Flat 
Numerical Aperture 0.45 0.45 0.228 0.09 -
F-Number 1.1 1.1 2.19 5.0 -
Angular Aperture 53.49° 55.6° 26.36° 10.0° -
Radius of Reference Surface RM  [mm] -109 -165.0 -284.90 -715.6 -
Maximum outside Sample Diameter DM allowed when accommodating Radii up to RM  [mm] 102 150 131 145 152.4
Maximum convex (concave) Radius that can be tested when outside Sample Diameter is larger than DM  [mm] 107 163 280 710 -
Input Beam Diameter [mm] 152.4 152.4 152.4 152.4 152.4
Diameter x Length [mm] 190 x 109 210 x 240 190 x 109 190 x 109 190 x 60
Weight [kg] 7.0 12.7 4.9 3.5 2.2
Wavefront Deformation for single Pass
[Waves PV]
<2.5 <2.5 <2.0 <1.5 <1.0

 
All MPF Transmission Spheres come in a wood box and include a test certificate.
 

In stock and immediately available:
4" f/0.75 1/20 wave
4" f/1.1 1/20 wave
4" f/1.5 1/20 wave
4" f/1.9 1/20 wave
4" f/3.3 1/30 wave and 1/40 wave
4" f/7.2 1/20 wave
4" f/11 1/20 wave
4" f/15 Converger 1/20 wave
4" f/25 Converger 1/20 wave
4" transmission flat 1/20 wave
6" transmission flat 1/20 wave

MPF-opticscs

Super 6" f/1.1s Transmission sphere

6" input, internal beam,
expander to 8" diameter,
true 6" f/1.1 output 

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

Numerical aperture: 0.45
Radius of reference element: 165mm
 

Diameter 210 mm
Length 240 mm
Weight 12.7 kg

Zygo bayonet

Please ask for prices

MPF optics

4" --> 6" Beam expander

4"  Zygo bayonet

Diameter 180mm, Length 230mm

Weight 3.7 kg

Wavefront deformation in single pass: < 1.5 waves PV

Please ask for prices


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 

 


New Transmission Spheres from other Manufacturers
Surface Error
Tested either with CaliBall (average of 10 measurements) or against a 1/40 wave f/3.3 transmission sphere.
Description            Pictures
Jenfizar 4" f/3.3

This TS is new old stock, manufactured in 2006, never used, in perfect condition

Serial number: 4010

Includes the original calibration report from 2009, which claims PV 0.042 and RMS 0.006
(right click to enlarge)

Wood Box: yes
Foam in Box: yes

Price:
10200.- EUR plus VAT

already sold


New Transmission Flats from other Manufacturers
Surface Error (Average of 10 measurements)
-- 4" or smaller optics were tested against a 4" 1/70 wave PVr flat
-- Aluminized optics were tested against a 6" 1/43 wave PV Dynaflect flat from Zygo
Description        Pictures
CVI Technical Optics Ltd. 4"
Transmission Flat
 

This TF is new !

Serial Number:  6060313-11
AE stock number: 62

Wood Box: yes
Foam in Box: yes

Price:
1800.- EUR plus VAT



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Optische Formelsammlung: Interferometrie      Optical formula collection: Interferometry

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