Opticstar AR80S GOLD GUIDE-SCOPE, Руководство пользователя, Страница: 9 / 16

© Opticstar Ltd 2011
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Observing the Sun
Special precautions need to be taken when observing the Sun with a telescope. A
full aperture filter must be used to dramatically reduce the amount of light that
enters the telescope, only use filters designed to be used for Solar observation with a
telescope. A second filter can also be used at the eyepiece end in conjunction with a
full aperture Solar filter to increase the level of surface detail i.e. Solar Continuum
Filters. Such filters work very well with digital cameras in particular and will reveal
additional detail otherwise not visible to the human eye. Always check the integrity
of any Solar filter before using it with a telescope. A hair-line scratch on a filter is
enough to damage your eyesight. If in doubt seek professional advice and never
point a telescope towards the Sun without a suitable Solar filter.
Visual Accessories
Depending on what came with your telescope you may need a number of extra
eyepieces which will provide a wider range of magnifications. For example high
magnifications are required for the Moon, planets and planetary nebulae. Low
magnifications are useful for observing extended objects and for locating targets.
Ninety degrees star diagonals are necessary as they make astronomical observation
comfortable. For terrestrial observation forty-five degrees prism diagonals are
preferred, such diagonals will also offer a corrected view unlike star diagonals.
A Moon filter will be necessary to observe the Moon with almost all telescopes
including the AR80S, light pollution filters can also help by reducing sky glow and
incoming light from other local light sources
Imaging Accessories
When imaging with a camera attached to the AR80S infra-red block, nebula (UHC)
and narrow-band filters (O3, H-alpha, S2) are recommended depending on
requirements.
The AR80S is suited for wide field deep-sky imaging due to its low focal ratio, solid
structure and Precision Focuser. It is well suited for deep sky imaging when coupled
with the Opticstar DS336 XL TEC-cooled camera which supports long exposures in
conjunction with very low noise levels. The small camera pixels of the DS336 XL
closely match the focal length of the AR80S telescope to produce unusually high
definition images.
The AR80S can also be used as a guide scope for auto-guiding motorised/GOTO
telescope mounts in conjunction with an appropriate guide camera and auto-guide
controller. Complete auto-guide kits include the Opticstar AG130M CA, AG131M
CA and AG131C CA. Such kits consist of a guide-camera, auto-guide controller,
cables, adapters and software to auto-guide with.