TELESCOPE MIRRORS FOR SALE

ADVANTAGES OF OUR PARABOLIC TELESCOPE MIRRORS

Making a quality telescope mirror is a complex and delicate process that need highly skilled work from experts in this field. The methodology and the way to making optical mirrors have not changed significantly over the decades. 

Our telescope mirrors are made by our own computer-controlled method. In most methods used, the parabolizing tool reaches and stops at a specific area that is selected for processing. Thus, small areas are formed on the surface and it is impossible to obtain a smooth surface. The uniqueness of our method is that during processing the parabolizing tool always passes through the entire surface of the mirror and through all areas. Thus, at each stage of parabolization, a smooth and smoothly changing curve is achieved. The parabolic surface thus achieved at the end is of excellent quality, smooth and without zonal errors. The indicator for quality Strehl is always more than 95%, usually 98% – 99% as you can see here.

Our telescope mirrors are extremely precise made from Borofloat33 and Supremax glass of the German company Schott and accompanied by a certificate from interferometric tests, which ensures a high quality. With a thickness of 25 mm, they are light and have a very short tempering time.

MIRROR DIAMETER
D=205 MM

  • Material: Schott Borofloat 33
  • Aperture: D=203 mm
  • Thickness: d=25 mm
  • Weight: ~1.4 kg
  • Accuracy of the parabolic surface: Strehl > 0.950
  • Interferometric test with a certificate: Yes
  • Reflection: 93%
  • Focal ratio f/4.5 and slower
    PRICE: 460 EUR
  • Focal ratio faster then f/4.5
    PRICE: 515 EUR

   *excl.Shipping costs

MIRROR DIAMETER
D=255 MM

  • Material: Schott Borofloat 33
  • Aperture D=253 mm
  • Thickness: d=25 mm
  • Weight: ~2.7 kg
  • Accuracy of the parabolic surface: Strehl > 0.950
  • Interferometric test with a certificate: Yes
  • Reflection: 93%
  • Focal ratio f/4.5 and slower
    PRICE: 700 EUR
  • Focal ratio faster then f/4.5
    PRICE: 785 EUR

   *excl.Shipping costs

MIRROR DIAMETER
D=300 MM

  • Material: Schott Borofloat 33
  • Aperture D=298 mm
  • Thickness: d=25 mm
  • Weight: ~3.8 kg
  • Accuracy of the parabolic surface: Strehl > 0.950
  • Interferometric test with a certificate: Yes
  • Reflection: 93%
  • Focal ratio f/4.5 and slower
    PRICE: 935 EUR
  • Focal ratio faster then f/4.5
    PRICE: 1050 EUR

   *excl.Shipping costs

MIRROR DIAMETER
D=355 MM

  • Material: Schott Borofloat 33
  • Aperture D=353 mm
  • Thickness: d=25 mm
  • Weight: ~5.3 kg
  • Accuracy of the parabolic surface: Strehl > 0.950
  • Interferometric test with a certificate: Yes
  • Reflection: 93%
  • Focal ratio f/4.5 and slower
    PRICE: 1365 EUR
  • Focal ratio faster then f/4.5
    PRICE: 1530 EUR

   *excl.Shipping costs

MIRROR DIAMETER
D=400 MM

  • Material: Schott Borofloat 33
  • Aperture D=398 mm
  • Thickness: d=25 mm
  • Weight: ~6.3 kg
  • Accuracy of the parabolic surface: Strehl > 0.950
  • Interferometric test with a certificate: Yes
  • Reflection: 93%
  • Focal ratio f/4.5 and slower
    PRICE: 1850 EUR
  • Focal ratio faster then f/4.5
    PRICE: 2070 EUR

   *excl.Shipping costs

MIRROR DIAMETER
D=460 MM

  • Material: Schott Supremax
  • Aperture D=458 mm
  • Thickness: d=39 mm
  • Weight: ~12.5 kg
  • Accuracy of the parabolic surface: Strehl > 0.950
  • Interferometric test with a certificate: Yes
  • Reflection: 93%
  • Focal ratio f/4.5 and slower
    PRICE: 3590 EUR
  • Focal ratio faster then f/4.5
    PRICE: 3950 EUR

   *excl.Shipping costs

MIRROR DIAMETER
D=510 MM

  • Material: Schott Supremax
  • Aperture D=508 mm
  • Thickness: d=39 mm
  • Weight: ~15.0 kg
  • Accuracy of the parabolic surface: Strehl > 0.950
  • Interferometric test with a certificate: Yes
  • Reflection: 93%
  • Focal ratio f/4.5 and slower
    PRICE: 4370 EUR
  • Focal ratio faster then f/4.5
    PRICE: 4810 EUR

   *excl.Shipping costs

  • Contact us for prices of any diameters which is not listed here or for thicker mirrors.
  • Here you can see the independent test results of two of our telescope mirrors. The test is made by the famous expert Wolfgang Rohr.
Computer parabolized primary telescope mirrors

REFIGURING OF FINISHED TELESCOPE MIRRORS

We offer testing and refiguring of finished mirrors. The price depends on the condition and quality of the mirror and the stages to be performed. Sometimes it is necessary to grind, polish and figuring the mirror, sometimes only polish and figuring, and sometimes only figuring. This can be assessed after an interferometric mirror test, which we do before starting.
You can see on the pictures the condition of a refigured mirror before and after processing.

Primary Telescope Mirror 205мм d=25мм f/3.9 , before refiguring - Strehl=0.766

BEFORE REFIGURING
Strehl = 0.766

Primary Telescope Mirror 205мм d=25мм f/3.9 , AR2201, after refiguring - Strehl=0.996

AFTER REFIGURING
Strehl = 0.996