The Skywatcher Evostar 80ED Imaging Kit includes the popular Evostar 80ED apochromatic doublet refractor, dedicated field flattener/reducer, plus upgraded finderscope with Testar helical focuser, which allows you to use it as a guidescope with 1.25" barrel-sized guide cameras such as the ASI120MM Mini. The Evostar 80ED is an apochromatic doublet refractor that offers high performance for visual observers and astrophotographers. The objective lens features an element similar in performance to FPL-53, extra-low dispersion glass (ED) that minimizes the chromatic aberration for the best colour correction. As a result, planets and the moon are sharp at high magnification and in astrophotography, images have a high contrast as stars are not surrounded by the purple halo due to chromatic aberration. The 2" Crayford focuser is solid, precise and backlash free. It operates at two speeds due to the 10:1 reduction mechanism for an extra fine focusing adjustment, which is paramount for astrophotography and high resolution observations. The 0.85x field flattener/reducer turns the scope into a powerful astrograph corrected for the APS-C format. The objective lens is fully multi coated with the Skywatcher proprietary "Metallic High-Transmission Coating" (MHC) for an effective anti-reflection result that approaches a transmission of 99.5%. The aluminium tube is light-baffled and blackened to ensure high contrast absorbing stray light. The Evostar 80 ED is an excellent telescope for astrophotography. Its chromatic correction is the highest of all the Evostar telescopes and its small dimension and affordable price makes this telescope the best entry level apochromatic refractor for astrophotographers. The sunspot AR 12192 has been the largest sunspot of the last 3 decades with a size of 129.000 km. Image taken with the Evostar 80ED, Canon Eos 6D at direct focus (image cropped), full aperture ND5 Astrosolar filter. Sydney, Australia 23 October 2014. Specifications Optical design Apochromatic ED doublet Objective diameter 80 mm Focal length 600 mm Focal ratio f/7.5 Resolving power 1.50 arc second Stellar limiting magnitude 11.5 Max. magnification 160 x Light gathering power 131 times the human eye Mount attachment Tube rings on Vixen bar (rings are 183 mm centre to centre apart) Focuser Crayford dual speed (10:1) Tube weight 2.5 kg Tube length 620 mm Tube diameter 100 mm Dew shield diameter 115 mm SKU SWBDED80-OTA+KIT1 Included items Evostar 80ED with dual speed focuser Upgraded 8x50 finderscope with helical focuser and fast release bracket Field flattener/reducer 2" mirror diagonal (90°) 2" to 1.25" adapter for the diagonal 2" to 1.25" adapter with M42 thread M42 extension tube Eyepiece LET 28mm Tube rings with Vixen style bar Lens cap with aperture reduction mask Piggyback 1/4" screw with camera locking nut Foam-lined aluminium carrying case
