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Ca II K-Line
For apertures greater than 80mm
ever-created glass) and an air-spaced triplet design that omits almost all chromatic aberrations
SkyView Pro
The iEXOS-100 PMC-Eight™ Equatorial Tracker System
Explore Scientific 152mm Achromat Refractor Optical Tube Nikon Ca II K-LineExplore Scientific 152mm Achromat Refractor Optical Tube We introduce this high quality and functional 152mm Achromat Refractor Optical Tube by Explore Scientific. This AR152 Air Spaced Doublet is a classic air spaced, crown and flint doublet achromatic refractor. At (6 inches) 152mm of aperture, it gives the highest resolution of the AR Series and the brightest images. The goal of the design was to offer a very significant value by providing precise