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  • Newton OrionOpticsUK CT10 Newton OrionOpticsUK CT10

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Newton OrionOpticsUK CT10

Product code: OOUK-CT10

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Quick Overview

Newton OrionOpticsUK CT10 telescope with carbon fiber tube is the perfect telescope for long exposure astrophotography for those who have a mid-range equatorial mount (with load capacity up to 25 kg). It weighs just 11 kg and, thanks to a focal length of 1200mm and f/4.8 fast focal ratio, you can use it with EQ6 or AZ-EQ6 type mounts. The 250mm large diameter make it also ideal for those looking for a universal instrument with which to take pictures of the Moon and planets at high magnifications and for those who want an exceptional optical quality instrument for visual use.

Diameter is important: when we want to photograph the smallest details of the planets, using a large diameter telescope makes the difference. In addition, to record the weaker nebulae or galaxies, a fast focal ratio is recommended to avoid too long and too difficult exposure times. Telescope collimation and optics test included in the price!

Availability: available in 40 days from the order

Order €2,390.00
22% tax incl
if you pay by bank transfer €2,318.30


Carbon fiber tube, rigid and lightweight

Newton OrionOpticsUK CT10 telescope is made of a carbon fiber tube, lighter and more rigid than the classic aluminum tubes. By reducing the weight of the optical tube, the mount on which it is installed can deliver more precise tracking (essential for astrophotography). The high rigidity of the construction allows to maintain perfect alignment of the optics while the very low thermal expansion coefficient of the carbon helps to maintain the position of the focal plane during long exposures.

Built with the utmost attention to details, this optical tube features a beautiful glossy finish outside and matte finish inside, to minimize unwanted reflections.





Certificated optics lambda/10 Ultra Grade

Buying a Newton OrionOpticsUK CT10 telescope you are guaranteed of the utmost optical quality. The optics are in fact made in England by OrionOptics and are supplied with a Zygo optical report that certifies the high quality. Compared to other similar telescopes of same diameter, Newton OrionOpticsUK CT10 offers higher brightness and contrast.

One of the parameters most commonly used to indicate the quality of a mirror is the correction in fractions of lambda (in simplified terms, the lower the value, the better the mirror quality): if cheap telescopes hardly reach lambda/4 and mid-range telescopes usually offer optics with lambda/5-6, Newton OrionOpticsUK CT10 telescope is equipped with OrionOptics Ultra Grade optics with with lambda/10 optical correction! Other important technical values (which the majority of manufacturers of telescopes does not provide as too difficult to reach) are a Strehl ratio with typical values around 99% and RMS values of the order of 0.02PV.

What does all this mean? Better pictures, more contrasted and rich in details, that will allow you incredible performances.



Mirrors with 97% reflectivity for brighter images

Usually normal telescopes mirrors have a reflectivity that can hardly reach 90%. This means that, with a Newton telescope equipped with 2 mirrors, some 80% of the light reaches the CCD camera or the eye of the user. Newton OrionOpticsUK CT10 telescope is equipped with HiLux optical coating that increases the reflectivity to at least 97% across the visible spectrum! This feature allows the Newton OrionOpticsUK CT10 telescope to provide brighter images than other similar instruments of the same diameter.

Further advantage of the HiLux coating is the duration in time: in fact, thanks to the incredible protection that this coating provides to optics, your telescope will not show any decrease of performance that is usually known in cheap instruments, even after several years!



Precision mechanics for mirrors support cells

The best optics require high mechanical precision to deliver maximum performance and maintain (or make it easier) collimation. In order to do this, our Newton OrionOpticsUK CT10 telescope uses anodized aluminum primary cells made with high precision CNC machines. The 9 points mirror holder uniformly distributes the weight of the mirror throughout the cell. The cell is completely anodised not only to provide protection to the metal against corrosion but also to reduce the risk of scratches.

The primary cell has 3 fans (12V) which, when turned on, significantly reduce the risk of fogging and decrease the time of acclimatization of the primary mirror (the telescope provides the best performance when the mirrors temperature reaches the ambient temperature).

The precise collimation system allows to maintain the collimation longer compared to other telescopes. The collimation is also easier to perform thanks to the mechanical precision with which the cells are built.





Newton OrionOpticsUK CT10 reflector - equipment:

- Newton OrionOpticsUK CT10 optical tube (D: 250mm F:1200mm f/4.8)

Carbon fiber tube

50,8mm focuser with 31,8mm reducer and 1:11 fine focus

Aluminum support rings, CNC machined

Finder support shoe

Technical specifications

Optical Design Newton
Optics Specchio parabolico
Diameter (mm) 250mm
Tube diameter 300
Focal Length (mm) 1200
Focal Ratio 4.8
Field flattener/corrector Not included (optional)
Optical Tube Carbonio
Obstruction 25%
Focuser 50,8mm Crayford, micrometrico
Eyepiece holder 50,8mm with 31,8mm reducer
Weight 11
Hard/soft case No

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