Fully multicoated apochromatic triplet objective: This telescope delivers the highest level of contrast and color correction we can produice in a five inch apo. We use a proprietary lens design with each lens element carefully hand figured to achieve a very high Strehl ratio. Each lens element is edge blackened and coated with an extreme Broadband, full multi-coating that will transmit light well above and below the visual spectrum, making them well suited for visual use and ccd imaging.
Aluminum tube and dew shield: The aluminum tube and dew shield comes standard in Instrument White, a durable, American powder coat finish. The dew shield can either be extended or retracted. Extension reduces dewing at night can cut out the light from those blaring street lamps. The dew shield also serves as a lens shade during the day. Retraction will reduce the length of your telescope tube for convenient storage.
Internal tube treatment: The inside of the tube assembly is baffled and painted "ultra flat black" to cut down on excess reflection. The inside of the focuser has light blocking ridges. These ridges are painted ultra flat black, eliminating reflected glare. .
3" Feather Touch focuser: The fully rotating, 3" Feather Touch focuser has 3.5" of travel and is large enough to work with our largest field flattener. There is no need to ever go larger than this massive 3" focuser. This focuser features ultra-smooth coarse and fine focus knobs (10:1 Ratio), internal brake system, ultra-low backlash system.