Explore Scientific 0116950, Инструкция по эксплуатации

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• If the air humidity is high, the glass may fog up and moisture may form. This is not a defect! In this
case, allow the device to acclimatise at room temperature for some time so that the residual hu-
midity can be reduced.
• All burnished screws should be treated from time to time with a maintenance oil for metal to avoid
the formation of rust film.
• Once the residual moisture has been completely removed, fit the dust caps and store the tele-
scope in a closed container* in a dry, mould-free place. It is recommended to store accessories in
a closed container with desiccant.
• (Depending on the model, a case may already be included in the scope of delivery)
21 Technical data
20'' Truss-Tube-Dobson
Item number 0116950
Design/Construction Open truss tube design, cage constructions and
tubes made of powder-coated aluminium, 4-arm
secondary mirror holder made of steel
Primary mirror 20'' (500mm) diameter, parabolic, Quartz glass
material, 94% reflectivity
Secondary mirror 120mm diam., Quartz glass material
Focal length 1800mm
aperture ratio f/3,6
Theor. Theor. resolution power 0.28'' (arc-seconds)
Visual limit value 26 mag
Focusing 2.5'' HEXAFOC 1:10 focuser, with 1.25'' adapter
Mounting Dobson system
Viewfinder Optical viewfinder 8x50
OTA weight 42,4 kg
Base weight 10,6 kg
Total weight 53,0 kg
Errors and technical changes excepted.