Premium quality fluorite ( CaF2) Barlow providing the renowned German Baader Planetarium offer. From 3x to be used up to 8x magnification both visual and astroimaging (up to 6x7 format, DSLR and CCD cameras) purposes, each telescope type (refractor, Newton, Schmidt - Cassegrain, Ritchey-Chrétien etc). The magnification rate depends on the projection distance (see attached figure). T2 adapters (not included) is required for the connection of the FFC. In addition to providing free from chromatic aberration focus aid, as a field flattener corrects the image plane up to 90 mm image circle. One of the developer of the legendary Zeiss APQ apochromat designed the FFC with Baader Planetarium. Specially recommended for high resolution lunar, planetary and double star visual observations and photography.
IMPORTANT! Extremely keep the manufacturer's recommendations! Sensitive optical device, avoid using large temperature difference. Should always be stored in the external ambient temperature not indoors.
- Four-element, fluorite (CaF2), apochromatic Barlow and field flattener
- Magnification: 3-8x
- T2 (internal) and T2 (external) threads
- 7-layer coating to all air-glass surfaces
- Surface machining accuracy rate: λ/10
- Recommended for all types of telescopes (for Newtonian Reflector from f/4.5)
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The product comes with 1 year warranty.