NCLT - a Telescope
to darker Skies
Telescope' is a portable telescope design for Newtonian optics to access remote seeing sites with big optical apertures but less
equipment weight and size to carry. Mountainbiking
or hiking with the
lightest NCLT 12" versions
is possible and will allow to reach very dark or high level observing sites. NCLT is based on new structural design principles using composite materials and high quality attachment parts and
fasteners from stainless steel, anodised alloys, hazed titanium and
certain heavy duty industrial plastics. Single
Arm versus Truss Tube
was normally not a
discussion with portable scopes since the advantages, achieved with
tube constructions, appeared obvious. But the workmaterials for telescopes
have changed and they will change further and so will
the designs. The NCLT design in form of the Single Arm version contains a very small number of parts, making the set up easy and quick!
Compact Dimensions, Light Weight, and High Luminosity
NCLT telescope design offers significant advantages:
a) Reduced weight, lower static
forces, and less intertia (e.g. when observing moving objects)
b) Increased stiffness, precision, and stability, providing best tracking performance.
c) Reduced temperature drift and less sensitivity against humidity or
liquid water in every climatic condition.
Single Arm Tube and Truss Tube are possible. Single
Arm Tube version is very quick, allowing more 'real' observing time. Truss Tube Versions are mainly meant for photographic applications. It is possible to
install adapter plates for equatorial mounts. That will lead to an extremely
lightweight, though, powerful astro photography instrument incl. the option to use it as a travel telescope. NCLT works best at fast optical ratios around F/3
- F/4 which is great for versatile set up/take down travel telescopes. The
triangular NCLT geometry combines highest stiffness, lowest weight,
and the least possible structural complexity of a Newtonian reflector telescope.
An additional truss structure solution is included with all NCLT Single Arm versions - Valien struts. It consists of two thin carbon fiber rods to
attach to the pole and to the tube base stopping vibrations instantly. You
don't need them when you observe with lower or mid magnification,
but it will help reduce vibrations at high magnifications.
The obstruction (shading) caused from the Valien struts is
Focuser and Coma Corrector
Feathertouch Focuser from Starlightinstruments
are meeting the requirements for visual and photographic purposes for
advanced travel and backpack instruments in very fast F/3 telescopes. SIPS
is a combination of an optical ParaCorr II Coma Corrector from TeleVue with an attached lightweight focuser. It is ideal with NCLT Travel Instruments for ratios around F/3. We use a special lightweight focuser in combination with the SIPS from Starlight Instruments.For 12" F/3.5 instruments we recommend the lighter Baader MPCC in a HC-2 focuser.
|Iris Baffle, Dew Shield, Dew Heaters, and more Accessories can be installed or
attached as Upgrades
Protection against Wind and Light
Lightweight beach shelter tents are ideal to use with
MOUNTAIN telescopes. Set up in minutes, they protect
against straylight and wind while weighing only a couple of pounds. They are enhancing the contrast for deep sky observing with the low standing
12" MOUNTAIN instrument.
Sitting on a mat leads to great convenience (vs. balancing on a
ladder in the darkness). Sitting
is also better as standing if you want max. visual sensitivity,
comfort, and concentration for getting the best possible impressions of DS objects. A smart way of 'dome' observing with two shelter tents...
Your visual observing techniques may improve when you can lean back and relax your body
while you are 'VISITING THE SKIES'.
We recommend a folding seat that supports your back like a deck chair.
NCLT can serve as a high performance digiscoping instrument for wildlife and
birding to catch the hidden scenes of nature.
A mirror telescope
of 12" will generate better, brighter, and higher resolution digiscoping footage of shy or even nocturnal animals.
tube is an optional assembly to fit on an NCLT telescope base to produce extra stiffness. It will work as best at F/4 to be
balanced by using additional counter weight. Also the set up & take down and the packing/unpacking time may need a little longer as the single tube.
For most visual observing tasks we recommend the single pole
instruments. But the truss tube option will, basically, allow you
more weight on top of the very light NCLT telescopes. Also an optional
Nylon fabric lightshroud can be used for covering the tube. The truss tube version should be used with NCLT telescopes bigger than 16".
is not much difference to tell to any normal fast ratio 12” Dobsonian
telescopes and you will get the same performance as in
any such good telescope
depending on the mirror quality, observing skills, the performance of the eyes, and the available atmospheric seeing. The
diffraction image caused from the two blade secondary cage is not
striking - just a faint unidirectional spike pattern, unlike the
radial spike patterns caused from the common 4 or 3 arm spider mounted
center of gravity in the NCLT instruments is very low so that the structure
collimation-stable and vibration-free observing but without the usual heavy chunky equipment to carry around. It will require a low observing position, e.g. to sit on a
or on a mat on the ground, depending from the angle of altitude and from the size of the optics and ratio. Of course it is also possible to put the scope on a higher level. Children
like NCLT MOUNTAIN telescopes due to the low
eyepiece position. An ideal school telescope
for young astronomers.
Most observing is possible without ballast weight, though the sand or water
ballast system, or a plastic-encased dumbbell weight disc will relieve the strong bungee counter system, making it more convenient to balance the scope with heavy eyepieces.
Normally, there is no need to change the counter weight when changing
the eyepieces. Light or mid weight eyepieces do not require ballast.
5lbs ballast weight is enough for balancing 12" MOUNTAIN telescopes with
heavy eyepieces plus a coma corrector or even a camera. 16" and bigger
telescope sizes will not need ballast for most observing tasks. We
offer (donut shaped) water ballast bags for the 12" MOUNTAIN size. The eyepiece weight may be limited in rather low positions but you, typically, observe planets at such lower positions with rather small
eyepieces or web cams allow viewing on screen or stacking images. The included bungee
counter system makes eyepiece change easy, without the scope
loosing its position.
A counter weight (5lbs) balancing a ParaCorr PLUS Ethos13 Eyepiece.
The bungee cord system allows fine adjustment. Here pictured with F/4 optics in a MOUNTAIN 12" NCLT instrument.
LiteScope MOUNTAIN 12" travel telescope was selected as a 'HOT PRODUCT 2009' by Sky &
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|Copyright: 2018 Vivian Bock. All rights reserved.|
Revised: August 2018
Information in this document is subject to change without notice.
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