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Focal Reducers & Field Flatteners
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Sky-Watcher 0.77x Focal Reducer / Flattener for EvoStar 150DX f/8 Refractor
BH # SKS20208 MFR # S20208
Key Features
- For Astrophotography/Astroimaging
- Virtually Eliminate Spherical Aberration
- Shortens Focal Ratio from f/8 to f/6.2
- Reduces Exposure Times by 66%
Available in other Styles, Configurations & Kits
Tele Vue 0.8x Photographic Field Reducer and Flattener
BH # TERF102 MFR # RFL-4087
Key Features
- Reduces Focal Length by 20%
- Widens Field & Shortens Exposure Time
- Eliminates Lens Curvature
- Requires Camera-Specific T-Mount
Sky-Watcher 0.77x Focal Reducer / Flattener for Esprit 150 ED APO f/7 Refractor
BH # SKS20215 MFR # S20215
Key Features
- For Astrophotography/Astroimaging
- Virtually Eliminate Spherical Aberration
- Shortens Focal Ratio from f/7 to f/5.4
- Reduces Exposure Times by 68%
Available in other Styles, Configurations & Kits
Sky-Watcher 0.77x Focal Reducer / Flattener for Esprit 120 ED APO f/7 Refractor
BH # SKS20209 MFR # S20209
Key Features
- For Astrophotography/Astroimaging
- Virtually Eliminate Spherical Aberration
- Shortens Focal Ratio from f/7 to f/5.4
- Reduces Exposure Times by 68%
Available in other Styles, Configurations & Kits
Tele Vue 0.8x Reducer for NP101is and NP127is Telescopes
BH # TENPR2073 MFR # NPR-2073
Key Features
- Reduces Focal Length by 20%
- Minimizes Full-Frame Sensor Vignetting
- Increases Field of View by 25%
- Threaded for Tele Vue Imaging System
Alpine Astronomical Baader M68 Field Flattener
BH # ALFFM68 MFR # FF-M68
Key Features
- For Baader APO 95/560 Travel Companion
- 3-Lens Field Corrector System
- 76.11mm Back Focus
- Telescope-Side M68a Thread