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10000046: Levenhuk Ra 250RC F8 OTA

Ritchey-Chrétien. Objective lens diameter: 250 mm. Focal length: 2000 mm

Levenhuk Ra 250RC F8 OTA is a Ritchey-Chrétien telescope with an aperture of 250 mm (9.8 in) and a focal length of 2000 mm (78.7 in) in a traditional metal shell. This model is perfect for any keen astrophotographer. One of the main features of Levenhuk Ra 250RC F8 OTA is the primary mirror made of quartz with a dielectric coating of 99% reflectivity. This model is also fitted with a dual-speed Crayford focuser with the 2'' large diameter thread.

The quartz glass of the primary mirror has one of the lowest thermal conductivity coefficients among optical materials. This model is fitted with a built-in cooling fan for the primary mirror (12V). The relatively compact size of the telescope tube allows for a smaller mount to be used, unlike Newtonian telescopes.

It is recommended that you use the Levenhuk 0.75x focal reducer with any Ritchey-Chrétien model.

Optical design

 Ritchey-Chretien

Optics material

 quartz

Optics coating

 dielectric, 99% reflectivity

Primary mirror diameter (aperture), mm

 250

Secondary mirror diameter, mm

 105

Mirror shape

 hyperboloid

Focal length, mm

 2000

Focal ratio

 f/8

Resolution threshold, arcseconds

 0.55

Diffraction limit, lp/mm

 over 1/10

Focuser

 2

Tube-mount assembly system

 dovetail plate

Optical tube material

 steel

Optical tube dimensions, mm

in

 299x736

11.8x29

Optical tube weight, kg

lbs

 15.9

35.1

Weight, kg

lbs

 21.2

46.7


Price:        2549.95


10000046: Levenhuk Ra 250RC F8 OTA

$2549.95

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PayPal: Buy 10000046: Levenhuk Ra 250RC F8 OTA

$2549.95