ASA Newtonian Correctors 2" Reducer and 3" Wynne

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we offer a limited quanity of brandew ASA-Austria correctors, designed by Philipp Keller


ASA NEWTON Coma Corrector 0.73x Reducer - 2" Connection
https://www.apm-telescopes.net/en/asa-newton-coma-corrector-073x-reducer-2-connection

This coma corrector and reducer turns your Newtonian telescope into a high-speed astrograph. The focal length is reduced and the field is corrected.

  • The corrector reduces the focal length of the Newtonian and increases speed while correcting the field at the same time.
  • The corrector can be used with all Newtonian telescopes from f/3.5 to f/8. Prerequisite is just a 2" connection and sufficient working distance (backfokus)
  • The existing design was clearly improved at the same time, the usable field is larger and the illumination was improved.
  • Shortening factor 0.73x
  • Working distance from the M48 thread ist 67 mm
  • Usable field up to 30 mm (APS-C size) / fully corrected 22 mm
  • Necessary focus distance from the 2" receptacle of the focuser: 85 mm - that is fulfiled by almost all Newtonian telescopes with 2" connection
  • Mechanical length of the corrector is 56 mm - it is short and does not protrude into the tube. The shorter design also provides a larger illuminated field of view
  • At the telescope side, an M48x0.75 2" filter thread is available
US $ 700 include UPS shipping


ASA 3" Wynne Corrector for Newtonian
https://www.apm-telescopes.net/en/asa-3-wynne-corrector-for-newtonian

ASA 3" Wynne Corrector 0.95 x

The ASA 3" Wynne corrector is a high performance corrector for Newtonian telescopes with a 0.95x multiplier meaning an F4 Newtonian will operate at F3.8 with a corresponding 0.95x reduction in focal length.

This high performance corrector has a 50mm corrected field allowing it to properly illuminate all sensors up and including the KAF-16803.

Back focus for the corrector is typically 56mm depending on the native F ratio of the scope it is used with.

 

To correct the field of view ASA uses the correctors designed by Dipl. Phys. Philipp Keller. All correctors have sufficient backfocus to be connected to all popular camera systems.

Each lens of the ASA correctors will be remeasured in radius and thickness. So we don´t use lenses which don´t comply with our rigid criterias. The highest quality lenses will be used for the Ritchey Chrétien and Cassegrain systems and additional the real refractive index will be measured of the glass material. With variations the design is matched individually, to ensure the maximum accuracy in the praxis.

All corrector housings will be made in the proprietary CNC production.We only use highest quality aluminium with tolerances under 0.01 mm. The strict quality control of the lenses together with the exact built housing guaranties a highest quality product of the reference class.

Name ASA - 3" Wynne Corrector
Manufacturer ASA - Astrosysteme Austria
Model ASA-3KORRW

Price incl. UPS US $ 1,095.00