Levenhuk G50 Blank Slides, 50 pcs
Levenhuk Ra 250RC F8 OTA
Levenhuk Ra 250RC F8 OTA
Levenhuk Ra 250RC F8 OTA
Levenhuk Ra 250RC F8 OTA
Levenhuk Ra 250RC F8 OTA
Levenhuk Ra 250RC F8 OTA
Levenhuk Ra 250RC F8 OTA

Levenhuk Ra 250RC F8 OTA

Brand: Levenhuk

Regular price $2,549.95 On Sale

Shipping & Returns: Fast Shipping. Free Returns. All The Time.

Why Buy From Stella Scopes

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.

This model has a quartz primary mirror covered with 99% reflection power dielectric coating. The main advantage of quartz glass is its low thermal conductivity coefficient. The telescope is also equipped with a dual-speed Crayford focuser that ensures high precision focusing with no backlash.

The model comes with a built-in fan for cooling the primary mirror and has a sturdy metal shell. Another important advantage of Levenhuk Ra 250RC F8 OTA is its smaller dimensions compared to Newtonian telescopes so a smaller mount can be used.

We recommend using the Levenhuk 0.75x focal reducer with any Ritchey-Chretien model.

Optical design

Ritchey-Chretien

Optics material

quartz

Optics coating

dielectric, 99% reflectivity

Primary mirror diameter (aperture)

250mm

Secondary mirror diameter

105mm

Lens (mirror) shape

hyperboloid

Focal length

2000mm

Focal ratio

f/8

Resolution threshold

0.55 arcseconds

Diffraction limit, lp/mm

over 1/10

Focuser

2'' dual-speed Crayford

Tube-mount assembly system

dovetail plate

Optical tube material

steel

Optical tube dimensions

299x736mm
11.8x29in

Optical tube weight

15.9kg
35.1lbs

Usage

General use product.
May be used by kids
over 3 years old.

Weight

21.2kg
46.7lbs

 

Product Guarantee

At StellaScopes.com we stand behind every purchase that we make 100%. If for any reason you are unsatisfied with your purchase. Simply send the item back to us unused in it's original packaging within 30 days of it's delivery.

Extensive Manufacturer Warranty

All of our manufacturers offer very generous warranty coverage of the products sold through our store. Based upon which brand is purchased that item is also covered from defects in workmanship and quality.

Explore Scientific: 

  • Explore FirstLight Branded Products: Limited USA One Year Warranty.
  • Explore Scientific Branded Telescopes: Limited* USA One Year Warranty, Extendable to Unlimited Lifetime Warranty
  • Explore Scientific Branded Eyepieces: Limited* USA One Year Warranty, Extendable to Unlimited Lifetime Warranty
  • Explore Scientific Branded Non-Electronic Telescope Accessories: Limited* USA One Year Warranty, Extendable to Unlimited Lifetime Warranty

Levenhuk: All Levenhuk telescopes, microscopes, binoculars and other optical products, except for accessories, carry a lifetime warranty against defects in materials and workmanship; all accessories have a 6-month warranty. This warranty does not cover consumable parts, such as bulbs (incandescent, LED, halogen, energy-saving and other types of bulbs), batteries (rechargeable and non-rechargeable), electrical consumables, etc.

Vixen Optics:Every Vixen telescope, astronomical binocular, and mount is warranted by Vixen Optics to be free of defects in materials and workmanship for a period of 5 years from the date of original purchase in the U.S.A. and Canada. Five year warranty covers all non-electrical/mechanical parts. Electrical parts are warranted for 1 year from date of purchase.