Vixen Telescope Corrector PH

Description Professional Astrophotography without Chromatic Aberration The Vixen Coma Corrector is designed to eliminate coma aberration that easily occurs in the parabolic mirror of reflective telescope, making it possible to take sharp astrophotographs even the edge part. A Wynne type 3-element in 3-group design. Corrects coma aberration from parabalic mirrow surfaces. Minimize occurrence of spherical aberration. A broad 44mm diameter circle, which covers a 36mm x 24mm full frame DSLR, and delivers sharp images over the entire imaging field. The same anti-reflective AS coatings, which are used in Vixen's high end VSD 100f/3.8 astrograph, are used to take advantage of 99.9%. In order to take advantage of the characteristics, we suggest you use Wide Photo Adapter 60 and Light Baffle Hood together. Applicable to all Vixen R200SS telescope. Old type R200SS telescope can also be renewed to f/3.8 high speed astrograph too. With bright edge R200SS telescope, by correcting aberration from parabolic mirror surfaces, the corrector delivers bright sharp pinpoint star images to the edge of the broad imaging circle. Specs Magnification 0.95x Focal Length R200SS 800mm (f/4)→760mm (f/3.8) Coatings AS Coatings (Per Side Maximum 99.9% Light Transmission) Lens Configuration Wynne Type 3-element in 3-group Image Circle 44mm (covers 36mm x 24mm full frame DSLR) Screw Thread M56, P=0.75mm Applicable Filter 52mm Applicable Telescope R200SS Visual Observation O (uses with 31.7mm eyepiece and eyepiece adapter together) Size φ56 x Length 78mm Weight 175g Country of Origin Japan Warranty Vixen warranties its products to be free from initial defects in materials and workmanship for a specified period based on part type: Vixen Electronic Parts: Limited One Year Warranty Vixen Mechanical Parts: Limited Two Year Warranty Click Here to read more CA Residents: Prop 65 WARNING(S)