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Takahashi Mewlon 210 OTA - TLK21000
[TAK_TLK21000]

Price: 3.520,00 EUR

 

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Product Details

Takahashi Mewlon 210 OTA - TLK21000

You have dreamed of a reflector with exceptional and powerful optics, with a generous diameter and with the guarantee of an incredible contrast : Mewlon is for you !

With its Cassegrain range reflectors, based on Dall-Kirkham optical design, Takahashi acted as a pioneer, and made Schmidt-Cassegrain other manufacturers outdated. This reflector with its excellent optical qualities can be used in a wide range of applications, and brings it on the top of the market. No worldwide mass production of reflectors can be compared to the Mewlon and be able to offer similar performances : compactness, power, rationality and versatility.

Mewlon are available in 4 diameters (180mm, 210mm, 250mm and 300mm) , optical tube assemblies (OTAs) or associated with equatorial mountings.

The focuser, often one of the weak points of the current telescopes, was particularly neat. The translating mechanism of the primary mirror of Mewlon 180mm and 210mm is machined with a particular care in the Takahashi workshops in order to reduce the shifting, to obtain a softness and an optimal regularity of focusing. Mewlon 250mm and 300mm are equipped with a the secondary mirror translating focuser, ordered with an electric handbox.
Equipped with a 50.8mm eyepiece holder in standard, you will be able to associate the most appropriate accessory with it, for visual, photographic or CCD use. The complete and coherent range of accessories proposed, will reach any of your goals.

The fixing of Mewlon on equatorial mountings is carried out using functional and effective dovetails. Their design facilitates frequent handling such as balancing or OTA assembly/disassembly without deterioration. Moreover, on Mewlon of large diameters, a counterweight is provided to balance the optical tube.
Mewlon integrates a high quality finder scope, associating luminosity and sharpness. This finder scope can also be used as a handle for transportation, without creating any bending or malfunctioning

The precision of optical surfaces is at least of λ/20. This standard of quality induces a strong concentration of the light in Airy disc, physical image of a star looked through any optical system. The stellar images are more defined and contrasted. The Mewlon primary mirror, oversized compared to the effective aperture, is installed in a mirror cell especially designed to avoid stresses sometimes generating of astigmatism

Levering:
Takahashi Mewlon-210 tube assembly with 50.8/31.75 adapter
D-210mm F-2415mm F/11.5 with :
TLK21010 Mewlon-210 and 7 X 50 integrated finder
TKP71422 Dove-tail adapter (female)

Product Specifications

The precision of optical surfaces is at least of λ/20. This standard of quality induces a strong concentration of the light in Airy disc, physical image of a star looked through any optical system. The stellar images are more defined and contrasted. The Mewlon primary mirror, oversized compared to the effective aperture, is installed in a mirror cell especially designed to avoid stresses sometimes generating of astigmatism

Optical designDall-Kirkham (Cassegrain)
Effective aperture180mm210mm250mm300mm
Primary mirror diameter (focal length)180mm (F/3)220mm (F/2,9)260mm (F/3)310mm (F/3)
Secondary mirror diameter (amplification)54mm (x4)65mm (x4)70mm (x4)95mm (x4)
Secondary obstruction0,330,320,280,32
Standard
Focal length (at prime focus)2160mm2415mm3000mm3572mm
Focal ratio (at prime focus)F/D 12F/D 11,5F/D 12F/D 11,9
Resolution0,64"0,55"0,46"0,40"
Limiting magnitude1313,413,814,2
Light grasp661x900x1275x1836x
Image circle16mm18mm21mm25mm
Back focus210mm210mm210mm210mm
Eyepiece holder(s)50,8mm/31,75mm50,8mm/31,75mm50,8mm/31,75mm50,8mm/31,75mm
With reducer
Focal length1763mm1961mm2307mm2739mm
Focal ratioF/D 9,8F/D 9,3F/D 9,2F/D 9,1
Image circle36mm39mm42mm42mm

Photographic field

Tube length640 mm700 mm850 mm1094 mm
Tube diameter210 mm244 mm280 mm324 mm
Tube weight6 kg8 kg12 kg26 kg

Product Pictures

 
Options

0.8x F/9.3 Reducer/Flattener

[TKA70581]

All the Mewlon telescopes can be equipped with a focal reducer, also acting as field flattener. This reducer makes it possible to reduce the focal length and offer a better general-purpose focal ratio.

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Takahashi Mewlon 210 21cm F12 OTA - TLK21000
Ik kocht deze kijker in 2006 als tweedehands instrument, zon ..
5 of 5 Stars!
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