Sky-Watcher K100 4" F/10 Klevtsov-Cassegrain OTA

The compact K100 Klevtsov-Cassegrain optical system is an interesting catadioptric design that utilises both primary and secondary mirrors and a sub-aperture correcting lens that effectively folds the telescope's long focal length into a telescope of relatively compact dimensions, ideal for the observation of double-stars, the surface detail of the Moon and bright planets. The telescope is equipped with a friction driven focuser with dual focus knobs (patent pending design) which moves the primary mirror to achieve focus. In addition there is an immensely helpful focus distance indicator scale that shows the position the focuser needs to be to view objects at distances of 8m, 14m and infinity. This focuser design truly enables rapid focusing to be achieved with the minimum of fuss. Capture celestial images with your smartphone with the supplied Smartphone Camera Adaptor!

Main Features:

• Magnifications (with optics supplied):  x50 & x100
• Highest Practical Power (Potential): x200
• Diameter of Primary Mirror: 100mm
• Primary & Secondary mirrors with Radiant™ Aluminum Quartz (RAQ™) coating providing up to 94% reflectivity with optimal durability and long term performance
• Telescope Focal Length: 1000mm (f/10)
• Eyepieces Supplied (1.25"): 10mm & 20mm Photo/Visual
• 5x24 Finder
• Universal Smartphone Adaptor (will fit smartphones with width between 54-90mm)
• 90° Star Diagonal (1.25”)
• 45mm Side-Mounted Dovetail Bar with 1/4-20 Tripod Threads
• Focus Distance Indicator for quick and easy focusing
• OTA Length: 363mm
• OTA Weight: 1680g (with accessories)
• NOTE: Smartphone depicted in product photo NOT included