GSO N-203/1000 M-CRF on Sky-Watcher EQ5 mount Newtonians opinie

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GSO N-203/1000 M-CRF on Sky-Watcher EQ5 mount
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GSO N-203/1000 M-CRF on Sky-Watcher EQ5 mount
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GSO telescope in the Newton 203/1000 CRF system on the Sky-Watcher EQ5 assembly

GSO N-203/1000 M-CRF OTA is a complete optical tube in the Newton system with a main mirror diameter of 203mm and a focal length of 1000mm. It is a versatile astronomical instrument that allows to conduct very advanced visual observations and astrophotography. It is equipped with a 2-inch focuser with a reduction of 1.25 inches with a microfitter 10: 1 , allowing the use of both standards of eyeglass frames and very precise focusing.

As far as the observation possibilities of this tube are concerned, it can be used to observe objects of the Solar System (Moon, planets, asteroids, comets) as well as nebulae. In its range there are several thousand nebular objects (all objects of the Messier catalog and an important part of the NGC catalog).

The optical tube can be mounted on any assembly with stiffness class EQ-5 or higher (HEQ5, EQ6, with GOTO or without), through the standard dovetail link in the Vixen / Sky-Watcher / Meade standard.

The EQ5 (CG-5) parallact mount offers exceptional stability and precision along with many other high-performance features that are useful for anyone, even an advanced astronomer. The assembly head reliably rests on a wide platform mounting stand made of stainless steel and equipped with a useful accessory table. The set also includes a level indicator (level), adjustment of the geographical width setting along with a micrometer scale and an azimuthal polar setter for the polarity star. The EQ5 also has engraved aluminum adjusting rings and microcontroller knobs. Mounting can optionally be equipped with a polar spot scope and drive in one or two axes. Assembly weight: about 22kg.


Optical system
• high, over 94% efficiency of the system and durability of the optics
• parabolic mirror f / 5
• mirror cooling system

Eyeglass extractor
• 2 "lift equipped with a clamping ring
• microprocessor with planetary gear 10: 1
• reduction of 2 "to 1.25" equipped with clamping ring
• millimeter scale for easier focusing of images

• complete optical tube
• 8x50 mm finder with a cross
• tube clamp
• dovetail rail in the Vixen / Sky-Watcher / Meade standard
• 2 "/ 2" 35mm bushing with brass pressure ring

Technical parameters of the optical tube

• Optical system: Newton's headlamp
• Diameter of the mirror: 203 mm (8 ")
• Focal length of the lens: 1000 mm
• Lighted: 1/5
• Accuracy of the mirror's performance: 1 / 8?
• Switching capacity: 0.69 ''
• Theoretical range: 13,5mag
• Maximum useful magnification: 400x
• Length of the optical tube: 920 mm
• Weight of the optical tube: 9,8kg


the planet
star clusters


2 years

(complete optical tube with a diameter of 203mm on the EQ5 class parallactic assembly)

(included: tube with optics, 8x50 finder with cross, tube clips, dovetail 43mm width, 35mm "extender" sleeve, EQ5 mount with micromodels, steel field tripod)

(mirror cooling system - windmills)

(thin arms fastening the secondary mirror ensure minimized diffraction)

(Crayford 2 "/ 1.25" focuser with clamping ring and micro-processor 10: 1)

(adapter for 2 "glasses included)

Assembly photos Sky-Watcher EQ5

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