Optical Accessories

Everything you need of optics for visual and photographic work or accessories for DIY projects, can be found in these categories.
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The uncompromising APM TMB-Design 1.8 x ED Barlow element is available again.The most important data:
- At 588 nm wavelength the negative focal length is - 104.20 mm
- Cemented 2 lens element with ED glass
- Free aperture : 22 mm
- Broadband multicoated
- Magnification factor 1.8x
- Screwable into our APM adapter kit (see accessories)
APM Deluxe Diagonal Mirror 2"
This adapter allows to install the M63 APM-Riccardi Apo reducer inside the focuser barrel of different 3" focuser
The all new APM-Riccardi Universal Apo Flattner 1.0x Model 1 for Apo Telescopes.
The all new APM-Riccardi Universal Apo Flattner 1.0x Model 2 for Apo Telescopes.
This reducer, when used with the 65PHQ astrograph, can effectively shorten the exposure time and significantly increase the field of view.
- specially designed for the 65PHQ
- reduces the focal length by 0.75x
- four-lens system
- camera-side threads M54 and M48
- 65 or 55 mm backfocus
This reducer, connected with the astrographs, can effectively shorten the exposure time and dramatically increase your field of view.- Designed for 107PHQ, 130PHQ and 151PHQ
- Reduces focal length by 0.7x
- Triplet design with ED glass
- Connection threads M68x1 male, M54x0.75 male, M48x0.75 male
- 55 mm backfocus from M48 thread
The Askar 0,8x Reducer - Corrector for the 185mm f7 Triplet APO turns the 185 mm APO into a fast Astrograph.
- designed for the Askar 185APO
- brings the focal ratio down to f5.6
- suitable for full frame cameras
The Askar 1.0x corrector for the 185mm f7 Triplet APO provides a very good image quality across the entire field of view.
- developed for the Askar 185APO
- provides very good image quality across the entire field of view
- suitable for full-frame cameras
The ASKAR full-frame 0.7x focal length reducer improves the FRA400´s and FRA500´s focal ratio from f/5.6 to f/3.9, halving the exposure time
The ASKAR full frame 0.7x focal length reducer improves the FRA600´s focal ratio from f/5.6 to f/3.9, halving the exposure time
Askar´s filter drawer allows filter changes to as little as 18 mm and provides maximum versatility for astrophotography.
- Connections at the telescope side: T2 (M42x0.75), M48x0.75 and M54x0.75 female thread - all adapters included
- Connections on camera side: T2, M48x0.75 and M54x0.75 male thread - all adapters included
- Inserts for mounted 1.25" and 2" filters included
- Inserts for unmounted 31 mm, 36 mm and 50 mm filters included in scope of delivery
- Height of the filter changer only 18 mm (without external thread)
- The set consists of 10 parts - filters are not included in the scope of delivery
- The filter holder is securely fixed in the base body with magnetic force