Showing posts with label ota. Show all posts
Showing posts with label ota. Show all posts

Wednesday, June 19, 2013

Best Celestron EdgeHD 1100 11in Optical Tube Assembly 91050-XLT, OTA


Celestron EdgeHD 1100 11in Optical Tube Assembly 91050-XLT, OTA by Celestron
Celestron EdgeHD 1100 11in Optical Tube Assembly 91050-XLT, OTA Telescope

Read more Celestron EdgeHD 1100 11in Optical Tube Assembly 91050-XLT, OTA

Celestron EdgeHD 1100 11in Optical Tube Assembly 91050-XLT, OTA Feature

  • Celestron 11" aperture aplanatic Schmidt-Cassegrain telescope produces astrograph-quality flat focal plane
  • EdgeHD coma-free Cassegrain optics and a built-in field flattener ensures sharp focus all the way to the edge of the field
  • Flexible tension clutches hold the mirror in place and reduce image shift when rotating the tube around a mount
  • Cooling vents located on the rear cell allow hot air to be released from behind the primary mirror
  • All EdgeHD optical tubes are Fastar compatible for imaging down to f/2 with optional accessories






  • Levenhuk Ra R80 ED Doublet Carbon OTA, apochromatic refractor, 80 mm, carbon tube, case Best Reviews


    Best Review Levenhuk Ra R80 ED Doublet Carbon OTA, apochromatic refractor, 80 mm, carbon tube, case

    This on-line sellers provide the best quality and save price cost which included super conserve shipping (in U.S.A. only) for Levenhuk Ra R80 ED Doublet Carbon OTA, apochromatic refractor, 80 mm, carbon tube, case. Reading opinions offers you with a a whole lot of fuller details in the cons and pros on the Levenhuk Ra R80 ED Doublet Carbon OTA, apochromatic refractor, 80 mm, carbon tube, case.



    Levenhuk Ra R80 ED Doublet Carbon OTA
    Apochromatic refractor. Objective lens diameter: 80 mm. Focal length: 500 mm


    Levenhuk Ra R80 ED Doublet Carbon OTA has a focal length of 19.7 inches and an objective lens diameter of 3.2 inches. The telescope tube made of carbon-fiber-reinforced polymer makes the telescope lighter and allows decreasing focal length dependency on temperature spans.


    Using carbon-fiber-reinforced polymer also makes for quick recovery of the thermodynamic equilibrium of the tube. As any other Levenhuk Ra telescope tube, Levenhuk Ra R80 ED Doublet Carbon model provides high-quality clear views due to fully multi-coated optics. Moreover, this telescope has a dual-speed Crawford focuser that ensures high precision focusing with no backlash.


    Levenhuk Ra R80 ED Doublet Carbon OTA also has a barrel diameter of 1.25'' so you won't have any problems using it with different accessories.


    With Levenhuk Ra R80 ED Doublet Carbon OTA you will also get a sturdy aluminum case -a great addition that lets you store and transport your instrument with ease.



    Specifications:
    Optical design: apochromatic refractor
    Objective lens: two-element
    Objective lens diameter (aperture), in: 3.2
    Focal length, in: 19.7
    Focal ratio: f/6.25
    Optics material: ED glass
    Optics coating: fully multi-coated
    Barrel diameter: 1.25"
    Optical tube material: carbon
    Focuser: 2'' dual-speed Crayford focuser
    Tube-mount assembly system: quick-release thumbscrew
    Optical tube length, in: 15.4
    Optical tube diameter, in: 4
    Optical tube weight, lbs: 6.2



    You still want to buy the Levenhuk Ra R80 ED Doublet Carbon OTA, apochromatic refractor, 80 mm, carbon tube, case?. TheLevenhuk Ra R80 ED Doublet Carbon OTA, apochromatic refractor, 80 mm, carbon tube, case is basically a very good product. If compared to the others. Levenhuk Ra R80 ED Doublet Carbon OTA, apochromatic refractor, 80 mm, carbon tube, case is clearly better.Buy today, you might have a price save, you should check the price before you buy.Of course, everybody wants to have their been then you should check-sized price is at the bottom.

    Levenhuk Ra R80 ED Doublet Carbon OTA, apochromatic refractor, 80 mm, carbon tube, case Feature

  • Apochromatic refractor
  • Objective lens diameter: 80 mm
  • Focal length: 500 mm





  • Sunday, June 16, 2013

    +++ Levenhuk Ra R80 ED Doublet OTA, apochromatic refractor, 80 mm, fully multi-coated optics, case


    Buy Levenhuk Ra R80 ED Doublet OTA, apochromatic refractor, 80 mm, fully multi-coated optics, case

    Most of the patron reviews inform that the Levenhuk Ra R80 ED Doublet OTA, apochromatic refractor, 80 mm, fully multi-coated optics, case from Publisher ,are quality product. It could be a pretty great product for the value. You can scan overview from consumers to find out additional from their past experiences. The customers feedback will give you a nice suggestion of the price and nice satisfaction of the products.

    All in all, we are actually suggest Levenhuk Ra R80 ED Doublet OTA, apochromatic refractor, 80 mm, fully multi-coated optics, case fou you. This shopping online sellers supply the best quality and save expense cost which included super save shipping (in U.S.A. only). Reading opinions delivers you having a a whole lot of fuller info of the cons and pros of the Levenhuk Ra R80 ED Doublet OTA, apochromatic refractor, 80 mm, fully multi-coated optics, case.


    Levenhuk Ra R80 ED Doublet OTA
    Refractor. Objective lens diameter: 80 mm. Focal length: 500 mm.



    Levenhuk Ra R80 ED Doublet OTA has a focal length of 19.7 inches and an objective lens diameter of 3.2 inches. The main feature of Levenhuk Ra R80 ED Doublet OTA is a fully multi-coated optics made of ED glass that offer extra clear views.


    Levenhuk Ra R80 ED Doublet OTA has a very bright, eye-catching design due to a special anodized finish of the optical tube and the body of the dual-speed Crayford focuser.


    Thanks to the retractable dew cap, your instrument will be protected from humidity and always ready when you are.


    It has a standard 1.25" barrel diameter so you won't have any problems choosing accessories.


    With Levenhuk Ra R80 ED Doublet OTA you will also get a sturdy aluminum case -a great addition that lets you store and transport your instrument with ease.



    Specifications:
    Optical design: apochromatic refractor
    Objective lens: two-element
    Optics material: ED glass
    Optics coating: fully multi-coated
    Objective lens diameter, in: 3.2
    Focal length, in: 19.7
    Focal ratio: f/6.25
    Barrel diameter: 1.25"
    Optical tube material: metal
    Focuser: 2" dual-speed Crayford
    Tube-mount assembly system: quick-release thumbscrew
    Optical tube length, in: 15.4
    Optical tube diameter, in: 4
    Optical tube weight, lbs: 6.6



    Levenhuk Ra R80 ED Doublet OTA, apochromatic refractor, 80 mm, fully multi-coated optics, case Feature

  • Refractor
  • Objective lens diameter: 80 mm
  • Focal length: 500 mm
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    Buy Levenhuk Ra 200N F4 OTA, Newtonian reflector, 200 mm, quartz-protected aluminum coating


    Levenhuk Ra 200N F4 OTA, Newtonian reflector, 200 mm, quartz-protected aluminum coating by Levenhuk, Inc.

    Levenhuk Ra 200N F4 OTA
    Newtonian telescope. Primary mirror diameter: 200 mm.


    Levenhuk Ra 200N F4 OTA has a focal length of 31.5 inches and a primary mirror diameter of 7.9 inches. The tube is designed for astrophotography but still can be successfully used for visual observations. The tube itself is made of metal that makes it sturdy and reliable.


    Levenhuk Ra 200N F4 comes with a 2'' dual-speed Crayford focuser that has known advantages: its construction makes for higher stability and the 2'' barrel diameter allows to easily attach a lot of accessories, including powerful cameras. The telescope tube is fitted with a built-in fan for cooling the primary mirror.


    The kit includes:
    - Levenhuk Ra 200N F4 optical tube
    - Finder scope
    - Finder scope base
    - Cooling fan
    - Batteries kit (6 pieces)
    - User guide and 3-year warranty



    Specifications:
    Optical design: Newtonian reflector
    Optics material: BK-7 glass
    Optical coating: quartz-protected aluminum
    Telescope tube: metal
    Primary mirror diameter (aperture), in: 7.9
    Focal length, in: 31.5
    Focal ratio: f/4
    Barrel diameter: 2", 1.25"
    Focuser: 2''dual-speed Crayford focuser
    Tube-mount assembly system: dovetail plate
    Finder scope: optical, 8x50
    Optical tube length, in: 28.3
    Optical tube diameter, in: 9.4
    Optical tube weight, lbs: 16



    Read more Levenhuk Ra 200N F4 OTA, Newtonian reflector, 200 mm, quartz-protected aluminum coating

    Levenhuk Ra 200N F4 OTA, Newtonian reflector, 200 mm, quartz-protected aluminum coating Feature

  • Newtonian telescope
  • Primary mirror diameter: 200 mm
  • Comes in a kit - see the description






  • Wednesday, June 12, 2013

    %$$$ Revews Levenhuk Ra 250RC F8 OTA, Ritchey-Chrétien, 250 mm, hyperboloid mirror, dielectric coating


    Save Product Available. Save Levenhuk Ra 250RC F8 OTA, Ritchey-Chrétien, 250 mm, hyperboloid mirror, dielectric coating. Compare your Save price with best online store. Choose your best product Shopping online.

    Review : Levenhuk Ra 250RC F8 OTA, Ritchey-Chrétien, 250 mm, hyperboloid mirror, dielectric coating

    Save Price Levenhuk Ra 250RC F8 OTA, Ritchey-Chrétien, 250 mm, hyperboloid mirror, dielectric coating. Buy on the merchant 's on the web looking and browse reviews. If you're attempting to locate Levenhuk Ra 250RC F8 OTA, Ritchey-Chrétien, 250 mm, hyperboloid mirror, dielectric coating with probably the most successful worth. This may be the most efficient offers for you. Where you might find these item is by online looking stores? Read the review on Levenhuk Ra 250RC F8 OTA, Ritchey-Chrétien, 250 mm, hyperboloid mirror, dielectric coating Now, it 's spacial worth. for that reason do not shed it.

    Main Features : Levenhuk Ra 250RC F8 OTA, Ritchey-Chrétien, 250 mm, hyperboloid mirror, dielectric coating

  • Ritchey-Chretien telescope
  • Objective lens diameter: 250 mm
  • Focal length: 2000 mm
  • Levenhuk Ra 250RC F8 OTA
    Ritchey-Chrétien telescope. Objective lens diameter: 250 mm. Focal length: 2000 mm



    Levenhuk Ra 250RC F8 OTA is designed specifically for astrophotography and has a focal length of 78.8 inches and an objective lens diameter of 10 inches.



    As every other Levenhuk Ra Ritchey-Chrétien telescope tube, this model has a quartz primary mirror covered with 99% reflection power dielectric coating. This model 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-Chrétien model.



    Specifications:
    Optical design: Ritchey-Chrétien
    Mirror shape: hyperboloid
    Optics material: quartz
    Optics coating: dielectric, 99% reflectivity
    Primary mirror diameter (aperture), in: 9.8
    Focal length, in: 78.7
    Focal ratio: f/8
    Secondary mirror minor axis, in: 4.1
    Focuser: 3''dual-speed Crayford
    Tube-mount assembly system: dovetail plate
    Optical tube material: steel
    Optical tube length, in: 29
    Optical tube diameter, in: 11.8
    Optical tube weight, lbs: 35.2
    Total weight, lbs: 46.7






    Tuesday, June 11, 2013

    %$$$ Quality Levenhuk Ra 200N F4 Carbon OTA, Newtonian reflector, 200 mm, quartz-aluminum coating, carbon tube


    Save Product Available. Save Levenhuk Ra 200N F4 Carbon OTA, Newtonian reflector, 200 mm, quartz-aluminum coating, carbon tube. Compare your Save price with best online store. Choose your best product Shopping online.

    Review : Levenhuk Ra 200N F4 Carbon OTA, Newtonian reflector, 200 mm, quartz-aluminum coating, carbon tube

    Get Save Price Levenhuk Ra 200N F4 Carbon OTA, Newtonian reflector, 200 mm, quartz-aluminum coating, carbon tube. Get around the merchant 's on-line looking and browse testimonials. If you're trying to locate Levenhuk Ra 200N F4 Carbon OTA, Newtonian reflector, 200 mm, quartz-aluminum coating, carbon tube with the most successful worth. This could be the most productive offers for you personally. Exactly where you may locate these item is by on-line looking retailers? Read the overview on Levenhuk Ra 200N F4 Carbon OTA, Newtonian reflector, 200 mm, quartz-aluminum coating, carbon tube Now, it 's best worth. therefore do not shed it.

    Main Features : Levenhuk Ra 200N F4 Carbon OTA, Newtonian reflector, 200 mm, quartz-aluminum coating, carbon tube

  • Newtonian telescope
  • Primary mirror diameter: 200 mm
  • Levenhuk Ra 200N F4 Carbon OTA
    Newtonian telescope. Primary mirror diameter: 200 mm



    Levenhuk Ra 200N F4 Carbon OTA has a focal length of 31.5 inches and a primary mirror diameter of 7.9 inches. The tube is designed for astrophotography but still can be successfully used for visual observations.



    The main feature of this tube is the carbon-fiber-reinforced polymer used for its shell, material that makes the tube lighter and allows to decrease focal length dependency on temperature spans. This material also makes for quick recovery of the thermal equilibrium. In addition to that, Levenhuk Ra 200N F4 Carbon OTA comes with a stable 2'' dual-speed Crayford focuser and built-in fan of 3.2 inches diameter for cooling the primary mirror.



    The kit includes:
    - Levenhuk Ra 200N F4 Carbon optical tube
    - Finder scope
    - Finder scope base
    - Cooling fan
    - Batteries kit (6 pieces)
    - User guide and warranty



    Specifications:
    Optical design: Newtonian reflector
    Optics material: BK-7 glass
    Optical coating: quartz-protected aluminum
    Telescope tube: carbon
    Primary mirror diameter (aperture), in: 7.9
    Focal length, in: 31.5
    Focal ratio: f/4
    Focuser: 2'' dual-speed Crayford focuser
    Tube-mount assembly system: dovetail plate
    Finder scope: optical, 8x50
    Optical tube length, in: 30.3
    Optical tube diameter, in: 9.4
    Optical tube weight, lbs: 13.8






    Monday, June 10, 2013

    Buy Celestron EdgeHD 800 8" Optical Tube Assembly 91030-XLT, OTA


    Celestron EdgeHD 800 8" Optical Tube Assembly 91030-XLT, OTA by Celestron
    Celestron EdgeHD 800 8" Optical Tube Assembly 91030-XLT, OTA Telescope

    Read more Celestron EdgeHD 800 8" Optical Tube Assembly 91030-XLT, OTA

    Celestron EdgeHD 800 8" Optical Tube Assembly 91030-XLT, OTA Feature

  • Aluminum Optical Tube
  • Celestron's premium StarBright XLT coatings
  • 2032 mm focal length (f/10)
  • 40 mm eyepiece included (51x)






  • +++ Levenhuk Ra R80 ED Triplet OTA, apochromatic refractor, 80 mm, fully multi-coated optics save


    Levenhuk Ra R80 ED Triplet OTA, apochromatic refractor, 80 mm, fully multi-coated optics

    Levenhuk Ra R80 ED Triplet OTA, apochromatic refractor, 80 mm, fully multi-coated optics  : image

    Check Price for "Levenhuk Ra R80 ED Triplet OTA, apochromatic refractor, 80 mm, fully multi-coated optics".

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    Levenhuk Ra R80 ED Triplet OTA, apochromatic refractor, 80 mm, fully multi-coated optics More

    Levenhuk Ra R80 ED Triplet OTA, apochromatic refractor, 80 mm, fully multi-coated optics reviews, you can try to look for product details. Read testimonials offers a much more proportionate recognizing of the pros and cons of the item. You could try to look for simillar items and often will help you to select buy.
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    "Levenhuk Ra R80 ED Triplet OTA, apochromatic refractor, 80 mm, fully multi-coated optics" Feature

    Levenhuk Ra R80 ED Triplet OTA
    Apochromatic refractor. Objective lens diameter: 80 mm.



    Levenhuk Ra R80 ED Triplet OTA has an objective lens diameter of 3.2 inches. The main features of Levenhuk Ra R80 ED Triplet OTA are a fully multi-coated three-element objective lens that makes for clear views, and a dual-speed Crayford focuser for precise focusing.


    Levenhuk Ra R80 ED Triplet OTA produces exceptionally sharp and clear images with no chromatic aberrations due to the fact that the apochromatic objective lens consists of three lenses. Other important features of this tube are compact size and sturdy and reliable metal construction that will serve you for years.


    Specifications:
    Optical design: apochromatic refractor
    Objective lens: three-element, FPL 53 glass
    Objective lens diameter (aperture), in: 3.2
    Focal ratio: f/6
    Optics material: ED glass
    Optics coating: fully multi-coated
    Tube-mount assembly system: dovetail plate
    Focuser: 2'' dual-speed Crayford focuser








    Saturday, June 8, 2013

    %$$$ Quality Levenhuk Ra R66 ED Doublet Carbon OTA, apochromatic refractor, 66 mm, carbon tube, case


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    Save Price Levenhuk Ra R66 ED Doublet Carbon OTA, apochromatic refractor, 66 mm, carbon tube, case. Purchase around the merchant 's on-line looking and browse reviews. If you're attempting to locate Levenhuk Ra R66 ED Doublet Carbon OTA, apochromatic refractor, 66 mm, carbon tube, case with one of the most effective worth. This could be the most efficient offers for you. Exactly where you may discover these item is by online looking outlets? Read the review on Levenhuk Ra R66 ED Doublet Carbon OTA, apochromatic refractor, 66 mm, carbon tube, case Now, it 's spacial value. for that reason usually do not shed it.

    Main Features : Levenhuk Ra R66 ED Doublet Carbon OTA, apochromatic refractor, 66 mm, carbon tube, case

  • Apochromatic refractor
  • Objective lens diameter: 66 mm
  • Focal length: 400 mm
  • Levenhuk Ra R66 ED Doublet Carbon OTA
    Apochromatic refractor. Objective lens diameter: 66 mm. Focal length: 400 mm



    Levenhuk Ra R66 ED Doublet Carbon OTA has a focal length of 15.7 inches and an objective lens diameter of 2.4 inches.


    The main features of Levenhuk Ra R66 ED Doublet Carbon OTA are a fully multi-coated two-element objective lens that makes for high-quality views, and a carbon-fiber-reinforced polymer shell that makes the tube lighter and allows it to quickly recover thermodynamic equilibrium.


    Levenhuk Ra R66 ED Doublet Carbon OTA comes with a reliable aluminum case - you can easily transport and store your refractor without any fear of damaging it.


    Thanks to the retractable dew cap, your instrument will be protected from humidity and always ready when you are.


    It has a standard 1.25" barrel diameter so you will be able to use it with eyepieces from different manufacturers.



    Specifications:
    Optical design: apochromatic refractor
    Objective lens: two-element
    Objective lens diameter (aperture), in: 2.4
    Focal length, in: 15.7
    Focal ratio: f/6
    Optics material: ED glass
    Optics coating: fully multi-coated
    Barrel diameter: 1.25"
    Optical tube material: carbon
    Focuser: 2" dual-speed Crayford
    Tube-mount assembly system: quick-release thumbscrew
    Optical tube length, in: 12.2
    Optical tube diameter, in: 3.2
    Optical tube weight, lbs: 3.8






    Monday, June 3, 2013

    $$$$$ Revews Levenhuk Ra 200RC F8 Carbon OTA, Ritchey-Chrétien, 200 mm, dielectric coating, carbon tube


    Shop for save price Levenhuk Ra 200RC F8 Carbon OTA, Ritchey-Chrétien, 200 mm, dielectric coating, carbon tube.Save and Options of Levenhuk Ra 200RC F8 Carbon OTA, Ritchey-Chrétien, 200 mm, dielectric coating, carbon tube from variety stores in usa. 2013.

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    Levenhuk Ra 200RC F8 Carbon OTA, Ritchey-Chrétien, 200 mm, dielectric coating, carbon tube Description

  • Ritchey-Chretien telescope
  • Objective lens diameter: 200 mm
  • Focal length: 1600 mm
  • Levenhuk Ra 200RC F8 Carbon OTA
    Ritchey-Chrétien. Objective lens diameter: 200 mm. Focal length: 1600 mm



    Levenhuk Ra 200RC F8 Carbon OTA is designed specifically for astrophotography and has a focal length of 63.9 inches and an objective lens diameter of 8 inches. The main feature of this tube is its shell made of carbon-fiber-reinforced polymer, material that makes the tube lighter and allows decreasing focal length dependency on temperature spans. This material also makes for quick recovery of the thermal equilibrium due to its low coefficient of thermal expansion and high thermal conduction.



    As every other Levenhuk Ra Ritchey-Chrétien telescope tube, this model has a quartz primary mirror covered with 99% reflection power dielectric coating. This model 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. Another important advantage of Levenhuk Ra 200RC F8 Carbon OTA compared to Newtonian telescopes is its smaller dimensions so a smaller mount can be used.



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



    Specifications:
    Optical design: Ritchey-Chrétien
    Mirror shape: hyperboloid
    Optics material: BK-7 glass
    Optics coating: dielectric, 99% reflectivity
    Primary mirror diameter (aperture), in: 7.9
    Focal length, in: 63
    Focal ratio: f/8
    Secondary mirror minor axis, in: 3.5
    Focuser: 2''dual-speed Crayford
    Tube-mount assembly system: dovetail plate
    Optical tube material: carbon
    Optical tube length, in: 18.7
    Optical tube diameter, in: 9
    Optical tube weight, lbs: 16.3
    Total weight, lbs: 22.9






    Sunday, June 2, 2013

    +++ Celestron EdgeHD 1400 14" Optical Tube Assembly 91060-XLT, OTA reviews


    Celestron EdgeHD 1400 14" Optical Tube Assembly 91060-XLT, OTA

    Celestron EdgeHD 1400 14

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    "Celestron EdgeHD 1400 14" Optical Tube Assembly 91060-XLT, OTA" Feature

    Celestron EdgeHD 1400 14" Optical Tube Assembly 91060-XLT, OTA Telescope






    %$$$ Revews Levenhuk Ra R102 ED Triplet OTA, apochromatic refractor, 120 mm, fully multi-coated optics


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    Best Reviews Levenhuk Ra R102 ED Triplet OTA, apochromatic refractor, 120 mm, fully multi-coated optics. Purchase around the merchant 's on the web looking and browse testimonials. If you're attempting to find Levenhuk Ra R102 ED Triplet OTA, apochromatic refractor, 120 mm, fully multi-coated optics with one of the most effective worth. This could be the most effective deals for you personally. Exactly where you may locate these item is by on-line searching stores? Read the review on Levenhuk Ra R102 ED Triplet OTA, apochromatic refractor, 120 mm, fully multi-coated optics Now, it 's best worth. as a result don't shed it.

    Main Features : Levenhuk Ra R102 ED Triplet OTA, apochromatic refractor, 120 mm, fully multi-coated optics

  • Apochromatic refractor
  • Objective lens diameter: 120 mm
  • Levenhuk Ra R102 ED Triplet OTA
    Apochromatic refractor. Objective lens diameter: 120 mm.



    Levenhuk Ra R102 ED Triplet OTA is a telescope tube designed for astronomical observations. The tube has an objective lens of 4-inches diameter and contains three fully multi-coated ED glass lenses, so Levenhuk Ra R102 ED Triplet OTA provides high-quality clear views.


    Levenhuk Ra R102 ED Triplet OTA is equipped with a dual-speed Crawford focuser that ensures high precision focusing with no backlash. Thanks to its metal construction, this model is very sturdy and reliable and will stay in great condition for decades.



    Specifications:
    Optical design: apochromatic refractor
    Objective lens: three-element, FPL 53 glass
    Objective lens diameter (aperture), in: 4
    Focal length, in: 28.1
    Focal ratio: f/7
    Optics material: ED glass
    Optics coating: fully multi-coated
    Optical tube material: metal
    Focuser: 3'' dual-speed Crayford focuser
    Tube-mount assembly system: dovetail plate
    Optical tube dimensions, in: 24x30
    Optical tube diameter, in: 5
    Optical tube weight, lbs: 12.5






    Saturday, June 1, 2013

    %$$$ Save Levenhuk Ra 250N F4 OTA, Newtonian reflector, 250 mm, quartz-protected aluminum coating


    Buy Levenhuk Ra 250N F4 OTA, Newtonian reflector, 250 mm, quartz-protected aluminum coating

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    Levenhuk Ra 250N F4 OTA
    Newtonian telescope. Primary mirror diameter: 250 mm.



    Levenhuk Ra 250N F4 OTA has a focal length of 39.4 inches and a primary mirror diameter of 9.9 inches. The tube is designed for astrophotography but still can be successfully used for visual observations. The telescope tube is made of metal that makes it sturdy, reliable and long lasting.



    Levenhuk Ra 250N F4 comes with a 3'' dual-speed Crayford focuser that makes for higher stability and the 3'' barrel diameter allows to easily attach a lot of accessories including more powerful cameras. The telescope tube is fitted with a built-in fan for cooling the primary mirror.



    The kit includes:
    - Levenhuk Ra 250N F4 optical tube
    - Finder scope
    - Finder scope base
    - Cooling fan
    - Batteries kit (6 pieces)
    - User guide and 3-year warranty



    Specifications
    Optical design: Newtonian reflector
    Optics material: BK-7 glass
    Optical coating: quartz-protected aluminum
    Telescope tube: metal
    Primary mirror diameter (aperture), in: 9.8
    Focal length, in: 39.4
    Focal ratio: f/4
    Barrel diameter: 2", 1.25"
    Focuser: 2" dual-speed Crayford focuser
    Tube-mount assembly system: dovetail plate
    Finder scope: optical, 8x50
    Optical tube length, in: 38.6
    Optical tube diameter, in: 12.2
    Optical tube weight, lbs: 29.3



    Levenhuk Ra 250N F4 OTA, Newtonian reflector, 250 mm, quartz-protected aluminum coating Feature

  • Newtonian telescope
  • Primary mirror diameter: 250 mm
  • Comes in a kit - see the description
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    Monday, May 27, 2013

    Celestron C6-A-XLT Optical Tube Assembly OTA Telescope w/ StarBright XLT Coatings for 91010-XLT Reviews


    We are here to serve your needs with the largest selection of products in the largest variety of categories on the web. We comb the web to make sure our prices are the reasonable price, especially Celestron C6-A-XLT Optical Tube Assembly OTA Telescope w/ StarBright XLT Coatings for 91010-XLT. We stand behind the quality of the products we sell, which is why we provide you with excellent quality for every items on our sites.

    Product Name : Celestron C6-A-XLT Optical Tube Assembly OTA Telescope w/ StarBright XLT Coatings for 91010-XLT

    Celestron C6-A-XLT Optical Tube Assembly OTA Telescope w/ StarBright XLT Coatings for CG-5 Mount

    Product Description : Celestron C6-A-XLT Optical Tube Assembly OTA Telescope w/ StarBright XLT Coatings for 91010-XLT

  • A High Point Certified Pre-Owned Telescope.
  • Comes with a full 90 Day High Point Warranty.
  • Condition Grade - 8.8 (Excellent).
  • See the complete High Point condition scale grading system by clicking the Demo & Used Telescope t
  • Celestron C6 Features Celestron XLT Coatings
  • ***Why don't we show the price?
    Because our price may lower than the manufacturer suggested retail price, the manufacturer does not allow us to show you our price until you click to see price
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    Sunday, May 26, 2013

    ##### Buy Levenhuk Ra R115 ED Triplet OTA, apochromatic refractor, 115 mm, fully multi-coated optics


    Shop for Best Levenhuk Ra R115 ED Triplet OTA, apochromatic refractor, 115 mm, fully multi-coated optics.Compare Price and Options of Levenhuk Ra R115 ED Triplet OTA, apochromatic refractor, 115 mm, fully multi-coated optics from variety stores in usa. .

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    Levenhuk Ra R115 ED Triplet OTA, apochromatic refractor, 115 mm, fully multi-coated optics Description

  • Apochromatic refractor
  • Objective lens diameter: 115 mm
  • Levenhuk Ra R115 ED Triplet OTA
    Apochromatic refractor. Objective lens diameter: 115 mm.



    Levenhuk Ra R115 ED Triplet OTA is a perfect choice for serious astronomical observations. The tube has an objective lens diameter of 4.5 inches. The three multi-coated lenses of the tube's objective lens are made of ED glass and provide clear high-quality views with no chromatic aberrations.


    Levenhuk Ra R115 ED Triplet OTA is equipped with a dual-speed Crawford focuser that ensures high precision focusing with no backlash. Thanks to its metal construction, this model is very sturdy and reliable and will stay in great condition for decades.



    Specifications:
    Optical design: apochromatic refractor
    Objective lens: three-element, FK61 glass
    Objective lens diameter (aperture), in: 4.5
    Focal length, in: 31.7
    Focal ratio: f/7
    Optics material: ED glass
    Optics coating: fully multi-coated
    Optical tube material: metal
    Focuser: 3'' dual-speed Crayford focuser
    Tube-mount assembly system: dovetail plate
    Optical tube dimensions, in: 28.5x34.5
    Optical tube diameter, in: 5.7
    Optical tube weight, lbs: 15.8






    Wednesday, May 22, 2013

    Levenhuk Ra 200N F5 OTA, Newtonian reflector, 200 mm, quartz-protected aluminum coating Shopping


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    Levenhuk Ra 200N F5 OTA
    Newtonian telescope. Primary mirror diameter: 200 mm.


    Levenhuk Ra 200N F5 OTA has a focal length of 39.4 inches and a primary mirror diameter of 7.9 inches. This tube is a good choice not just for astronomical observations but also for astrophotography. Pyrex glass used for manufacturing the tube's mirrors has low ratio of the degree of expansion to the change in temperature. The mirrors' reflective layer is fully multi-coated and covered with silicon dioxide sputtering to protect it from external conditions.


    Sturdy and reliable metal construction of the telescope tube ensures that Levenhuk Ra 200N F5 OTA will serve you for a long period of time.


    Levenhuk Ra 200N F5 OTA comes with a precise dual-speed Crayford focuser and a built-in fan of 3.2 inches diameter for cooling the primary mirror.


    The kit includes:
    - Levenhuk Ra 200N F5 optical tube
    - Finder scope
    - Finder scope base
    - Cooling fan
    - Batteries kit (6 pieces)
    - User guide and 3-year warranty



    Specifications:

    Optical design: Newtonian reflector

    Optics material: BK-7 glass

    Optical coating: quartz-protected aluminum

    Telescope tube: metal

    Primary mirror diameter (aperture), in: 7.9

    Focal length, in: 39.4

    Focal ratio: f/5

    Barrel diameter: 2", 1.25"

    Focuser: 2" dual-speed Crayford

    Tube-mount assembly system: dovetail plate

    Finder scope: optical, 8x50

    Optical tube length, in: 37

    Optical tube diameter, in: 9.4

    Optical tube weight, lbs: 18.2



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    Levenhuk Ra 200N F5 OTA, Newtonian reflector, 200 mm, quartz-protected aluminum coating Feature

  • Newtonian telescope
  • Primary mirror diameter: 200 mm
  • Comes in a kit - see the description





  • Tuesday, May 21, 2013

    *** Levenhuk Ra R110 ED Doublet OTA, apochromatic refractor, 110 mm, fully multi-coated optics, case buy


    Levenhuk Ra R110 ED Doublet OTA, apochromatic refractor, 110 mm, fully multi-coated optics, case

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    "Levenhuk Ra R110 ED Doublet OTA, apochromatic refractor, 110 mm, fully multi-coated optics, case" Feature

    Levenhuk Ra R110 ED Doublet OTA
    Refractor. Objective lens diameter: 110 mm


    Levenhuk Ra R110 ED Doublet OTA is a high-quality professional refractor with an object lens diameter of 4.3 inches. Its objective lens, due to fully multi-coated coating provides sharp clear views with no chromatic aberrations.


    Levenhuk Ra R110 ED Doublet OTA is made of aluminum so it is sturdy and lightweight. The optical tube has a dovetail mounting bracket that makes it is easy to assemble in just a few minutes. Moreover, the instrument is equipped with a retractable dew cap that will protect the objective lens from fogging.


    With Levenhuk Ra R110 ED Doublet OTA you will also get a sturdy aluminum case -a great addition that lets you store and transport your instrument with ease.



    Specifications:
    Optical design: apochromatic refractor
    Objective lens: two-element, FPL 53 glass
    Objective lens diameter (aperture), in: 4.3
    Focal length, in: 30.3
    Focal ratio: f/7
    Optics material: ED glass
    Optics coating: fully multi-coated
    Optical tube material: metal
    Focuser: 3" dual-speed Crayford
    Tube-mount assembly system: dovetail plate
    Optical tube dimensions, in: 25.5x33
    Optical tube diameter, in: 5.7
    Optical tube weight, lbs: 12.2








    Monday, May 20, 2013

    Levenhuk Ra R72 ED Doublet OTA, apochromatic refractor, 72 mm, fully multi-coated optics, case Shopping


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    Levenhuk Ra R72 ED Doublet OTA
    Refractor. Objective lens diameter: 72 mm. Focal length: 432 mm.



    Levenhuk Ra R72 ED Doublet OTA has a focal length of 17 inches and an objective lens diameter of 2.8 inches, which allow using the tube for observation of the Moon craters, Saturn rings and other astronomical objects.



    The main feature of Levenhuk Ra R72 ED Doublet OTA is fully multi-coated optics which makes for high-quality views.


    There are also some important features that make the tube reliable and allow using it comfortably: compact size, dew cap, aluminum case, stylish glossy design, and a standard 1.25" barrel diameter that means you won't have any problems with choosing accessories for the tube.


    With Levenhuk Ra R72 ED Doublet OTA you will get a sturdy aluminum case that will help you protect your instrument during transportation.



    Specifications:
    Optical design: apochromatic refractor
    Objective lens: two-element
    Optics material: ED glass
    Optics coating: fully multi-coated
    Objective lens diameter, in: 2.8
    Focal length, in: 17
    Focal ratio: f/6
    Barrel diameter: 1.25"
    Optical tube material: metal
    Focuser: 2" dual-speed Crayford
    Tube-mount assembly system: quick-release thumbscrew
    Optical tube length, in: 12.2
    Optical tube diameter, in: 3.6
    Optical tube weight, lbs: 5.1



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    Levenhuk Ra R72 ED Doublet OTA, apochromatic refractor, 72 mm, fully multi-coated optics, case Feature

  • Refractor
  • Objective lens diameter: 72 mm
  • Focal length: 432 mm