Newtonian
Astrograph Telescopes
| Alluna Newton
Astrographs are high-end telescopes uncompromisingly oriented to highest
optical and mechanical quality. As pure astrograph or as robust observatory
telescope for visual use or for research, the Alluna Newton astrographs
are the right choice for all application areas. |
For
the optics, the core of each optical telescope, we do not engage with any
experiment. We use exclusively high-quality optics of our own production.
The tube is, same as in our RC Telescopes, made of a honeycomb-pocket structure.
In order to allow the best possible insight the tube's upper part is rotatable
in a highly precise socket. |
| Newton
Astrograph Optics |
| A perfect parabola shape
of the main mirror and in addition a low surface roughness are the preconditions
for the high-contrast pictures of a Newton astrograph. We guarantee, that
all Newton optices comply with these rewuirements. Alluna Newton astrographs
are available as fast-lens f3.8 systems in four different sizes, 16, 18,
20 and 24 inches as standard. In case you require a higher light intensity,
we can offer systems with openings of down to f3.0. With a 3 inch Wynne
corrector you may achieve a perfectly corrected field of up to 45 mm. |
| Newton
Astrographs CNC Carbon Truss OTA |
You will hardly find a Newton
astrograph featuring the same precision down to the last detail as our
Carbon Aluminium Truss astrograph. All bigger parts are cut from solid
aluminium. Thanks to the honey-comb pocket structure we achieve enormously
stable and warp resistant systems even in a leightweight construction.
Using most modern CAD systems
is indispensable for construction and design of our high-quality telescopes.
Complex single components and sub-assemblies are modelled exactly upon
the requirements and assembled virtually before production. Thus all parts
can be optimised with regard to weight, stability and expansion behaviour.
The comprehensive FEA (Finite element analysis) additionally helps to analyse
all supporting parts by means of stress simulations.
OTA modeling in CAD |
Finite element analysis
Supporting components |
|
| Alluna
Telescope Control |
Same as for our Ritchey-Chrétien
telescopes, QSC, the telescope control system takes over control of the
basic functions of the Newton telescope. On the one hand climatisation
of the optical tube and the primary mirror and on the other hand focusing
on the 3.5 inch drawtube and switching on/off heating of the secondary
mirror.
 The
climate mode also provides exact temperature data. Controlling the fans
is fully automated, depending on the current delta between surrounding
temperature and main mirror temperature. The focus mode displays the current
focus position in digits, mm or inches on a large-sized display.
The GoTo function allows you to approach pre-set focus positions fast and
precise. The so-called focus drift is automatically compensated. For a
detailed explanation of all the telescope control system's functions please
refer to the corresponding product page. |
| Pictures |
|
| Basic
information Newton Astrograph |
-
Available sizes: 16 / 18 / 20 / 24 inch f3,8 System - f3,0 to f3,8 possible
-
Also available with glass ceramic Zerodur primary mirror
-
Interferometrically tested and certified optics min. L1/8 PV wave
-
High-quality aluminium coating with plasma polymer protective layer
-
High-quality Carbon Aluminium Truss tube
-
Tube upper part rotatable by 16 to 20 Inch
-
3.5 inch draw tube, optionally motor-driven
-
Wynne Coma Corrector 45 mm field optional
-
Weight-reduced and warp-resistant carbon/aluminium CNC truss tube
-
easy adjustment with long-term adjustment stability
-
Temperature measurement directly at the mirror
-
OneView temperature monitor, automatic fan control
-
Telesopce Control System (More)
-
Only one USB cable for controlling the entire telescope
-
Focus-positioning, auto-focus-drift-compensation optional
-
One USB cable is sufficient to control the entire telescope
-
ASCOM interface
-
Short delivery times
-
Absolutely high-quality optics, mechanics and software; complete manufacturing
"Made in Germany " ! |
| technical
data Alluna Newton Astrographs |
 |
Alluna Newton16
|
Alluna Newton18
|
Alluna Newton20
|
Alluna Newton24
|
| main
mirror |
16 inch / 410 mm
|
18 Inch / 460mm
|
20 Inch / 510 mm
|
24 Inch / 610 mm
|
| aperatur* |
f3,8 / 1550 mm
|
f3,8 / 1730 mm
|
f3,8 / 1940 mm
|
f3,8 / 2320 mm
|
| sekundary |
140 mm
|
150 mm
|
160 mm
|
180 mm
|
| focuser |
3,5 Inch
|
3,5 Inch
|
3,5 Inch
|
3,5 Inch
|
| corrector |
3" Wynne optional
|
3" Wynne optional
|
3" Wynne optional
|
3" Wynne optional
|
| tube's
upper part rotatable |
Yes
|
Yes
|
Yes
|
No
|
| weight
/ kg |
46 kg
|
60 kg
|
82 kg
|
145 kg
|
|
*to f3,0 to f3,8 possible
| Delivery |
-
Carbon aluminum CNC truss tube
-
Losmandy dovetail mounting plate, others upon request
-
High quality Alluna Ritchey Chretien optics with certificate
-
Telescope Control System more
info
-
3,5 Inch Feather Touch Focuser
-
Software with ASCOM interface |
| Optional
more |
- Ether with glass ceramic
Zerodur primary mirror
- Available
sizes f3,0 to f3,8 ( Standard is f3,8)
-
robotic DustCover
- 3 Inch Coma Corrector
- Motor-driven focuser,
control via PC / Notebook
- Control of secondary mirror
heating On / Off via PC / Notebook
- Transport box for worldwide
shipping |
| References |
| are available for business
outside of Germany |
| Prices
without 19% German VAT plus shipping and packing |
| Delivery
times on inquires |
trading conditions
If
interested, please contact us at - Contact
|
Alluna Optics 18 Zoll f3,8 Newtonian Astrograph
Alluna Optics 18 Zoll f4,0 Newtonian Astrograph
on Astro AP12000
Alluna Optics rotatable upper part with
3,5 Inch OAZ
|
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