Opticstar AR80S GOLD GUIDE-SCOPE, Руководство пользователя

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© Opticstar Ltd 2011
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Once the object is lined up in the finder-scope you will be able to observe the target
through the telescope’s eyepiece. Look through the eyepiece, turn the focuser knob
to bring the target into focus.
Terrestrial Observation
You can use the telescope for terrestrial observation for which you need a prism
diagonal, otherwise the image will appear mirrored and/or upside down. In
astronomy it is not relevant if the Moon is say upside down, what is important is to
capture as much light as possible and correctors take some of this valuable light
away.
Astronomical Observation
When observing at night your first target should be the Moon as it offers a wealth of
detail, it is large, bright and easy to locate. Spend some time with the Moon, high
magnifications will show a wealth of detail. You will see mountain ranges, craters
and evidence of volcanic activity when the Moon was mainly composed of melted
rock. You will need a neutral density filter to observe the Moon, a 13%-25%
transparency filter is recommended.
Once confident with the Moon the planets would be the next target. Planets are easy
to identify as they are bright and do not twinkle unlike stars. Please note that when a
planet is out of focus and it becomes very dim you may not be able to see it.
Use the finder-scope to place the planet in the centre of the field of view, then look
through the eyepiece and use the telescope focuser to bring the planet into focus.
Planets that are easy to observe include Venus, Mars, Jupiter and Saturn. You will
get the most out of the planets at higher magnifications.
Even at high magnifications planets will look like small peas, they will however
reveal a reasonable degree of detail to the trained eye. Jupiter will show banding and
the Red Spot and you will be able to observe the Galilean Moons.
Saturn is probably the most exciting planet to observe through a telescope. While
surface detail is subtle its rings are a unique site and you should be able to observe
the Cassini division which appears as a black gap between the rings.
Mars also known as the Red planet will reveal a reasonable amount of detail when
close to Earth. Its orange colour is prominent and surface markings are visible as are
the Polar caps when present.
Venus can be observed early in the morning before dawn or just after sunset. Venus
appears quite large in the telescope but its atmosphere will hide any surface detail.