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Thank you for purchasing an Astronz Dobsonian
telescope. This precision optical instrument is built
with the highest quality materials and with proper
care will provide many years of reliable service.
The Dobsonian telescope is an “alt-azimuth” (up-down/
left-right) mounted Newtonian reflector type telescope.
The design was popularised in the 1960’s by San Francisco
astronomer John Dobson, who famously made telescopes
from recycled “junk” such as cardboard tubes and scrap
wood, and was largely responsible for making large aperture
telescopes available to amateur astronomers for a reasonable
cost.
In a Newtonian reflector telescope, invented by British scientist Sir
Issac Newton (1642-1727), light enters the telescope throught the top
of the telescope (the open end) and is reflected off a concave parabolic
curved mirror at the bottom of the tube. The light is then reflected off a flat
mirror mounted at an angle of 45 degrees, into an eypiece on the side of the
telescope tube.
Introduction
⚠
WARNING
DO NOT use the telescope or finderscope to look at the sun with
-
out an approved solar filter. Doing so will cause permanent dam
-
age and even blindness.
NEVER use a solar filter that attaches to the eyepiece. Only
approved solar filters that completely cover the opening of the
optical tube will provide adequate protection.
Summary of Contents for DOBSONIAN GS680
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