ASTRO ELECTRONIC
Dipl.Ing. Michael Koch
Raabestr. 43 D37412 Herzberg Germany
Tel: +49 (0)5521 854265 Fax: +49 (0)5521 854266www.astroelectronic.de email
Neue ReferenzObjektive
für Interferometer
New reference optics for interferometers 
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new arrivals
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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 RitcheyCommon Test is available as well. Customerspecific 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 
FNumber  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 R_{M} [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 D_{M }allowed when accommodating Radii up to R_{M} [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 D_{M} [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     
FNumber  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 R_{M} [mm]  1517.0  1517.0  2449.4  2449.4  3520  3500     
Maximum outside Sample Diameter D_{M }allowed when accommodating Radii up to R_{M} [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 D_{M} [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   
FNumber  1.1  1.1  2.19  5.0   
Angular Aperture  53.49°  55.6°  26.36°  10.0°   
Radius of Reference Surface R_{M} [mm]  109  165.0  284.90  715.6   
Maximum outside Sample Diameter D_{M }allowed when accommodating Radii up to R_{M} [mm]  102  150  131  145  152.4 
Maximum convex (concave) Radius that can be tested when outside Sample Diameter is larger than D_{M} [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:

MPFopticscs
Super 6" f/1.1s Transmission sphere 6" input,
internal beam,
Surface
Accuracy:
Numerical
aperture: 0.45
Diameter 210
mm
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 is
a 25.4mm diameter, high precision silicon nitride ball and kinematic mount used
to calibrate phasemeasuring interferometers by determining the errors in the
transmissionsphere referencesurface.
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

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
Wood Box: yes
Price:
already sold 
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: 606031311
Wood Box: yes
Price:

Optische Formelsammlung: Allgemein Optical formula collection: General
Optische Formelsammlung: Interferometrie Optical formula collection: Interferometry
Linsen, Spiegel, optische Bauteile
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