Correctors - Increasing the performance of your telescope system

For the photographic correction of the Field of View (FOV) ASA produces correctors designed and calculated by Dipl. Phys. Philipp Keller. All correctors come with ample back focus to accommodate all common DSLR and CCD cameras.

Best possible design. Our correctors are not calculated for a small spectral bandwidth of 450 to 650nm, but are optimized for a wider bandwidth from 400 to 700nm and above. Every lens which is used in ASA correctors is re-measured in radius and thickness. Any lens which lies outside of the strict ASA tolerances is discarded.

Production. All our corrector tubes are manufactured in our company own CNC production. Only high-grade aluminum is used and processed within a 0,01mm tolerance. ASA's strict quality control of lenses and exact processing of corrector frame and mounting ultimately guarantee high-end products which today already have became the reference class by which to measure excellence.

Unique. Every corrector is measured and tested within the system. For the highest grade lenses - deployed in professional Ritchey-Chrétien and Cassegrain systems - the actual diffraction index of the delivered glass batch furthermore is measured. Should deviations in the material occur, the design will be adapted individually to ensure that the theoretical precision is also achieved in practise.

Custom-made designs. ASA will also custom produce correctors for professionals. The correctors and hyperbolic astrographs designed for the new SuperWasp II project used to discover new Exo-Planets, e.g, are quality products by ASA.

Interesting Links:
ASA Folder Correctors
Overview: Corrected fields of view (FOU)

2" Schmidt-Cassegrain Reducer Corrector 0.77x

	2SCKORR System: Schmidt-Cassegrain (not suitable for MeadeTM ACF systems) Corrected FOV: 22mm (APS-C Format) Backfocus: ca. 97 mm Price: EUR 390,- excl. shipping More Informations

2" Coma Corrector Quattro 1.175x

	2KORRC System: Newton, Dobson Corrected FOV: 30-40mm Backfocus: ca. 70 mm Price: EUR 550,- excl. shipping More Informations

2" Reducer Corrector 0.73x

	2KORRR System: Newton, Dobson Corrected FOV: 25-27 mm Backfocus: ca. 65 mm Price: EUR 720,- excl. shipping More Informations

2" Barlow Corrector 1.8x

	2 KORRB System: Newton, ASA-Astrograph Corrected FOV: 30 mm Backfocus: ca. 121,5 mm Price: EUR 990,- excl. shipping More Informations

3" Wynne Corrector 0.95x

	3 KORRW System: Newton, ASA-Astrograph Corrected FOV: 50 mm Backfocus: ca. 57 mm Price: EUR 990,- excl. shipping More Informations

3" Reducer Corrector 0.73x

	3 KORRR System: Newton, ASA-Astrograph Corrected FOV: 28 mm Backfocus: ca. 77 mm Price: EUR 1050,- excl. shipping More Informations

4" Wynne Corrector 1.0x

	4KORRW System: Newton Corrected FOV: 60 mm Backfocus: ca. 60 mm Price: EUR 1450,- excl. shipping More Informations

4" Cassegrain Field Flattener Corrector

	4CAKORRFL System: Classical Cassegrain, ASA Cassegrain Corrected FOV: 80 mm (e.g. KAF16803) Price: EUR 1600,- excl. shipping More Informations

4" Ritchey-Chrétien Field Flattener Corrector

	4RCKORRFL System: Ritchey-Chrétien, ASA Ritchey-Chrétien Corrected FOV: 80 mm (e.g. KAF16803) Price: EUR 1600,- excl. shipping More Informations

4" Cassegrain Reducer Corrector 0.72x

	4CAKORRR System: Classical Cassegrain, ASA Cassegrain Corrected FOV: 60 mm (e.g. KAF16803) Backfocus: ca. 90 mm Price: EUR 3025,- excl. shipping More Informations

4" Ritchey-Chrétien Reducer Corrector 0.84x

	4RCKORR System: Ritchey-Chrétien, ASA Ritchey-Chrétien Corrected FOV: 60 mm (e.g. KAF16803) Backfocus: ca. 90 mm Price: EUR 3025,- excl. shipping More Informations

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