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Sky Watcher Skyliner FlexTube
Dobsonian Telescopes
Dobsonians offer an incredible aperture-to-price ratio,
and the FlexTube collapsible fold-away design is perfect
for portability and storage ...
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An effective telescope mount needs to keep a telescope tube
rigidly in place, as an movement, even a small vibration,
can have a marked effect on the positioning of the object
under view, especially at higher magnifications. Traditional
tripod mounts undergo significant forces, and tripod costs
go up significantly as the telescope weight increases. The
Dobsonian mount, popularized by John Dobson in the late
1970’s, is a very simple but effective method of mounting
a Newtonian Reflector, based on the alt-azimuth principle,
and provides a more cost-efficient method of mounting a
telescope, as it doesn't have to cope with large forces
on tripod legs. This type of mount only really works when
the eyepiece is high up the tube, so is ideal for reflector
telescopes. Fast and easy to set up, the Dobsonian mount
consists of a box-type mounting which allows the telescope
to pivot in altitude, while the box itself is rotated on
a base in azimuth. The secret of the design is to correctly
balance the optical tube and to use frictional materials,
which allow it to move easily when nudged but to stay in
position when not. The tube material used on our Dobsonian
range is lightweight but stong aluminium. |
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”I have used a great number of telescopes; some are good, some mediocre and some bad. To me the Sky-Watcher range of instruments are very good indeed, and suited to amateurs of all kinds – and they are not priced out of the market! Excellent value.
Use them and enjoy them.“
Sir Patrick Moore CBE FR
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SKY-WATCHER DELUXE MIRROR COATINGS
Most reflectors today usually have a coat of aluminium as
the mirror surface and then an overcoat of silicon monoxide
or silicon dioxide to protect it. Silicon dioxide produces
a much more durable coat than silicon monoxide but requires
specialized equipment to apply it and is therefore more
expensive. Protection is needed, because in most reflectors,
the mirror is open to the elements and deterioration of
the reflective layer reduces the resolution of the telescope.
ALL Sky-Watcher reflectors are Multi-Coated with Silicon
Dioxide as standard for Optimum Durability and Long Term
Performance. |
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