Correctors & Reducers

APM Comacorrecting 1 1/4" ED Barlow 2.7 xDesigned by Gerd Düring / GermanyOur totally new photo-visual apochromatic Barlow with real ED glass, calculated for the correction of Off-Axis Coma at Newtonian telescopes. This Barlow allows you to observe...

APM Comacorrecting 1 1/4" ED Double Barlow 6.25 xDesigned by Gerd Düring / GermanyOur worldwide unique photo-visual apochromatic 2.7x Barlow with real ED glass, calculated for the correction of Off-Axis Coma at Newtonian telescopes, can now be combined...

APM 2 inch coma-correcting telecentric 1.5x Barlowby the well known physicist and optic designer Philipp KellerSome times past APM Telescopes introduced the coma-correcting 2.7 times Barlow designed by Gerd Düring, which enjoys great popularity.New...

Our new reducer, calculated and designed from RiccardiMassimo Riccardi, famous optical designer from Italy, designed for APM-Telescopes a new 3 element 0.75 x Apo-Reducer/Flattener Corrector for all TMB-APM-LZOS Apochromatic Telescopes. Tests show that...

The Askar new FRA400 F3.9 full-frame reducer reduces the telescope’s effective focal ratio by a factor of 0.7x, thus an original f/5.6 becomes an f/3.9 system, your exposure time will significantly shorten, providing a shorter, more optically...

The Askar 3 inch F3.9 full frame reducer features 4 elements optical design specifically for the FRA600, offers a 0...

2" Glasspathcorrector® Factor 1.7 for Newtons - at full aperture with integrated Coma-Corrector. Includes T-2 change ring (#2456320) for adaptation on Maxbright BinocularSuitable to insert into the Baader Maxbright II and Mark V Großfeld Binocular...

2" Glasspathcorrector® Factor 1.8 for Refractors and Schmidt Cassegrains - at full aperture.Suitable to insert into the Baader Maxbright and Mark V Großfeld Binocular viewer (insert diameter: ∅ 2" - 50,.8mm, incl. M48 filter thread)You will also...

A common limitation that plagues owners of most popular Schmidt-Cassegrain telescopes is the narrow field size and high magnifications produced by their slow optical system (typically, f/10). Until now, owners of SCTs have lacked a truly versatile and...

Apochromatic, multi-coated fluorite lens system10-times higher line resolution than the world best projection eyepiecesThe FFC fits on every T-2 thread and in every 2" focuserBaader FFC – 2" / T-2 Fluorite Flatfield ConverterThe CaF2...

Glasspathcorrector Factor 1.25. Optical path length: -30 mmGlasspathcorrector Factor 1,7. Optical path length: -65 mmGlasspathcorrector Factor 2,6. Optical path length: -120 mmInsert diameter: ∅ 38 mmA Baader Glaspathcorrector is not a Barlow lens! The...

3-lens field corrector for BAADER APO 95/560 CaF2 Travel Companion76.11mm backfocus, 52mm corrected field of viewTelescope side M68a thread, camera side M68i thread

45 ° an erecting prism AmiciIncluding 2x Glaswegkorrektor ™ (Glass Path Corrector) and 1¼ "barrelSuitable for all SC telescopes and refractorsOnly suitable for Baader Maxbright Binocular

Coma corrector for Newton telescopes, that reduces neither the focal length nor the image field of your telescope Large lenses for completely vignetting-free exposures up to f / 3.5. Maximum sharpness over the entire image field Phantom Coating™...

The RCC I (Rowe Coma Corrector) is a Coma Corrector from Dave Rowe with Triplet Lense design for f/4 NewtonsThe RCC works from f/3.5 to f/6 - it is perfect on f/4Coma Corrector with backfocus 91,5mmreproduction scale is 1:1 - in contrast to many other...

Features This combination focal reducer and field corrector lens accessory works with all Celestron 5", 6", 8", 9 1/4", 11" and 14" Schmidt-Cassegrain telescopes This clever accessory makes it possible to have a dual focal ratio instrument, without...

Features The EdgeHD .7x Focal Reducer Lens makes your EdgeHD 1100 one full F-Stop faster than f/10, reducing your exposure time by half to capture the same brightness of object 5-element lens design Maintains similar flat-field performance as native...