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 garanties a highest quality product of the reference class.
|Manufacturer||ASA - Astrosysteme Austria|
|Additional Information||Recommended distance from focal plane to connecting thread: 77 mm|
|Focal Length||Focal length reduction: 0.73 x|
|Optical Coatings||Fully multicoated|
|Other||Connection to camera: Flange with 6 x M3 thread , Connection to telescope: 3" Barrel|
|Periodic Error Correction||Fully corrected field: 28 mm|
|Use||Newtonian telescopes from F/3 to F/5|