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  • £10.00 - £11,999.00

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Brand

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Condition

Optical Design

Optical Design

Cassegrain

telescope design that combines a

spherical mirror with a lens in a

design that takes advantage of

all the surfaces being nearly

"spherically symmetrical"

 

Learn More About Cassegrain Telescopes

Cassegrain Grovers Optics Northallerton

Cassegrain

15 products - next page link at the bottom

Showing 1-15 of 95 item(s)

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  • Celestron C8 XLT CGE OTA

    Price £1,309.00

    Celestron Schmidt-Cassegrain Optical Tube Assemblies (OTA) are available individually for use with your favorite mount

  • The Heritage-90 packs a powerful punch and is ideal for observing the Moon, planets and double-stars, and also can be used for high power daytime terrestrial viewing

  • Sky-Watcher SkyMax 102

    Price £219.00

    102mm 4inch f/1300 Maksutov-Cassegrain Telescope. The Sky-Watcher SKYMAX Maksutov-Cassegrains are the ultimate ‘take-anywhere’ telescopes. They are also ideal if working space is limited.

  • C8 Optical Tube Assembly as used in the best selling Celestron Evolution 8. Sold without eyepiece, visual back or finderscope. Ideal if you have a damaged telescope or want to upgrade to the "magic" 8 inch aperture.

  • C8 Optical Tube Assembly as used in the best selling Celestron Nexstar 8se. Sold without eyepiece, visual back or finderscope. Ideal replacing a damaged telescope or want to upgrade to the magic 8 inch aperture.

    The tripod socket on this OTA makes it ideal for terrestrial use as well.

  • Perfect if you have damaged a Nexstar telescope's optical tube:
    SLT grey (Right), Astro-Fi black (Right), Evolution silver (Left) SE orange (Left)
    Construction & StarBright multi-coated optics are identical in all

    The dovetail position (in brackets) will alter the position of the focuser
    An EQ mounted focuser is different again

    Supplied without mount, tripod, finderscope, visual back, diagonal or eyepieces

  • With a total weight of 28 lbs including the tripod, the ultra portable 5 SE features a precision optical system with 1,250 mm focal length (f/10) standard with our premium StarBright XLT coatings and offers 56% more light gathering power than a 4" model.

  • Control your telescope via integrated WiFi using the free Celestron SkyPortal app for iPhone iPad Android devices

    With fully coated glass optics provides outstanding views the Moon and planets, as well as bright deep space objects beyond our Solar System

    Read the critical product review comparison below

  • Skywatcher Skymax 127...

    Price £549.00

    The highly portable Sky-Watcher SKYMAX-127 (VIRTUOSO GTi), has been designed to be controlled wirelessly with your Smartphone or Tablet, using the free SynScan App for iOS or Android. The Virtuoso GTi mounting, with it's built-in WiFi module, creates it’s very own Wi-Fi network, so the mount can be used anywhere, without any reliance on other WiFi or mobile networks.

  • Perfect if you have damaged a Nexstar telescope's optical tube:
    SLT grey (Right), Astro-Fi black (Right), Evolution silver (Left) SE orange (Left)
    Construction & StarBright multi-coated optics are identical in all

    The dovetail position (in brackets) will alter the position of the focuser
    An EQ mounted focuser is different again

    Supplied without mount, tripod, finderscope, visual back, diagonal or eyepieces

  • Used Celestron AstroFi...

    Price £299.00

    Used telescope in very good condition - 6 month warranty

    Control your telescope via integrated WiFi using the free Celestron SkyPortal app for iPhone iPad Android devices

    With fully coated glass optics provides outstanding views the Moon and planets, as well as bright deep space objects beyond our Solar System

    Read the critical product review comparison below