Light Weight Red Dot Finder Scope with Brackets and Dovetail: $45.Other features: Sling lateral support and deluxe push-pull brass knob collimation screws.Additional, optional accessories: 8x50 Finder, Shroud, Wheelbarrow, Vinyl foam Cushioned Grips.Tube material: 6063-T6 Aluminum Alloy tubes with black zinc plated steel knob screws Aluminum Alloy main structure (OTA and mount) and structure steel mirror cell.Mirror coatings/over-coatings: 96% Enhanced coating on both of the primary and secondary mirrors.Focuser: 2" dual-speed linear bearing Crayford.Optical quality: Diffraction limited++ (Strehl 0.95+ for the primary mirror, 1/10 lambda or better in PV for the secondary mirror).The entire systems can be assembled easily and quickly, as little as a few minutes. Modular and Compact Design: The Hubble UL20 is delivered in several preassembled modules.Enhanced Coating - The state of the art 96% Enhanced Coating on the primary and the secondary mirrors.Fast Optics - The UL20 fast optical system delivers bright images and features a short tube keeping the eyepiece conveniently close to the ground.Exclusive Optical Technology - The UL20 features Hubble lightweight sandwich mirror with an optimized thermal design that cools up to 10 times faster than the regular solid mirrors.It features a real mirror box for safe mirror protection, and convenient storage and transportation
#Dobsonian telescope portable
It has 8 rigid truss tubes and extremely strong and portable folding ALT bearing structure. Fully assembled the UL20 weighs at about 90 pounds. Light, Strong, Compact and Extremely Portable - The Hubble UL20 features a precision-machined all-metal construction.Outstanding Images - Premium quality, diffraction limited Newtonian optical systems will deliver stunning views of the heavens from dark sky sites.A Premium, Light, Compact and Portable Design - About half the weight of traditional Dobsonian telescopes.A quantum leap in optical performance - the UL 20 Truss Dobsonian telescope's huge 20" diameter primary mirror gathers more than 6 times more light than popular 8" reflectors or almost three times of the light grasp of a 12" telescope.
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