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

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 or 1/20 wave PV, 
1/ 30 or 1/40 wave upon request

Standard Zygo Bayonet

Please ask for prices
 
 

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

New: 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 4" f/11
Numerical Aperture 0.67 0.48 0.33 0.26 0.15 0.10 0.07 0.05
F-Number 0.75 1.1 1.5 1.9 3.3 4.8 7.2 11
Angular Aperture 82.3° 55.6° 38.9° 30.3° 17.3° 12.1° 8.0° 5.4°
Radius of Reference Surface RM  [mm] -48.17 -65.50 -121.44 -163.12 -300.69 -449.0 -700.35 -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 97.4 98.5
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
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
Weight [kg] 2.41 2.3 1.72 1.65 2.08 1.7 1.63 1.44
Operating Wavelength [nm] 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
Reference Element 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
Operating Temperature [°C] 22 +- 8 22 +- 8 22 +- 8 22 +- 8 22 +- 8 22 +- 8 22 +- 8 22 +- 8

 
Long Radius 4" Objectives: 4" f/15
Converger
4" f/15 Diverger 4" f/24
Converger
4" f/24
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 -24 34.9 -34.9 - -
Angular Aperture 3.7° 3.7° 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] 100.0 100.0 100.8 102.5 101.6 101.6 90 101.6
Maximum convex (concave) Radius that can be tested when outside Sample Diameter is larger than DM  [mm] 1515 -1515 2440 -2440 3500 -3490 - -
Diameter x Length [mm] 127 x 45 127 x 45 127 x 45 127 x 45 127 x 45 127 x 45 127 x 45 127 x 45
Weight [kg] 0.9 0.9 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
Input Diameter [mm] 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
Wavefront Deformation for single Pass
[Waves PV]
<0.4 <0.4 <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

 
6" and 8" Objectives: 6" f/1.1 8" f/1.1 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 2.2 5.0 -
Angular Aperture 53.49° 55.6° 26.36° 10.0° -
Radius of Reference Surface RM  [mm] ca. -109 -165.0 -284.90 -760.0 -
Maximum outside Sample Diameter DM allowed when accommodating Radii up to RM  [mm] 102.0 150.0 138.0 150.0 101.6
Maximum convex (concave) Radius that can be tested when outside Sample Diameter is larger than DM  [mm] 107 163 280 750 -
Diameter x Length [mm] 179 x 106 210 x 240 179 x 95 179 x 82 127 x 45
Weight [kg] 7.0 12.5 4.5 3.5 0.9
Operating Wavelength [nm] 632.8 632.8 632.8 632.8 632.8
Input Diameter [mm] 152.4 152.4 152.4 152.4 152.4
Reference Element Fused Silica Fused Silica Fused Silica Fused Silica Fused Silica
Wavefront Deformation for single Pass
[Waves PV]
<2.5 <2.5 <2.0 <1.5 <0.4
Operating Temperature [°C] 22 +- 8 22 +- 8 22 +- 8 22 +- 8 22 +- 8

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

In stock and immediately available:
4" f/1.5 lambda/20
4" f/3.3 lambda/20
4" f/7.2 lambda/20
4" f/11 lambda/20
4" flat lambda/20
6" flat lambda/20

MPF-optics

New Super 8" f/1.1 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 12.5 kg

Zygo bayonet

Please ask for prices

MPF optics

4" --> 6" Beam expander

4"  Zygo bayonet

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


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



 


















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: