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such as the Schmidt-Cassegrain were reserved for the wealthy
5mm multi-coated prism with aluminised backing for maximum reflectivity and illumination to the autoguider
Optical Excellence: The Mak-Cassegrain design blends the compactness of a smaller telescope with the optical prowess of a larger aperture
making this genuine Neodymium Moon & Skyglow-Filter the brightest in its class
CEM40/CEM40EC (early version with 20mm CW shaft ONLY)iEQ30/iEQ30 ProCEM25/CEM25P/CEM25ECZEQ25AZ Mount ProMiniTower ProMiniTower IIMiniTower
Dual ED Telescope Eyepiece - 5mm William Optics such as the Schmidt-Cassegrain wereAvailable focal lengths: 5mm, 8mm, 12mm, 15mm, 18mm, 25mm. The ED eyepieces series offers high optical quality 1. 25" eyepieces with ED elements delivery outstanding contrast and sharpness. The eyepieces combine these optical qualities with a large 60 degrees field of view for a greater immersion and observation comfort. The field of view is flat free of distorsions and the colours are extremely well corrected. All air to glass surfaces are fully
US$ 24.00
US$ 54.00
US$ 40.00
