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Items 41 to 60 of 914 total

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  1. Astro-Tech - White 111mm f/7 ED Triplet Refractor Telescope

    Astro-Tech - White 111mm f/7 ED Triplet Refractor Telescope

    This 111mm triplet refractor from Astrotech has an increase of 18% light transmission when compared to a 102mm refractor ota.

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    (48 States)
    Model#: AT111EDT
    $1,595.00

  2.  Borg - 77 ED II f/4.3 Astrograph Set (2178 + 7135 + 7835 + 7704)

    Borg - 77 ED II f/4.3 Astrograph Set (2178 + 7135 + 7835 + 7704)

    • BORG 77EDII OTA
    • 0.65x reducer
    • Total of 6 elements
    • 330mm focal length
    • F4.3
    • 35mm full-frame coverage
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    (48 States)
    Model#: B07743
    $2,088.00

  3. Olivon - Alpha Lyra Telescope 76/700 AZ-1

    Olivon - Alpha Lyra Telescope 76/700 AZ-1

    The 76mm Alpha Lyra 76/700 Refractor Telescope from Olivon is an entry-level optic that comes with a kit of accessories for observations of terrestrial and celestial subjects right out-of-the-box.

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    Model#: OLALN76-US
    $109.00

  4. Olivon - Alpha Lyra Telescope 70/900 EQ-1

    Olivon - Alpha Lyra Telescope 70/900 EQ-1

    The Olivon Alpha Lyra Refractor Telescope 70mm x 900mm with Motorized Equatorial EQ-1 mount includes a 2x barlow,

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    Model#: OLALAC70MC-US
    $169.00

  5. Meade - X-Wedge for 8", 10", 12", and 14" LX200 and LX600 Telescopes

    Meade - X-Wedge for 8", 10", 12", and 14" LX200 and LX600 Telescopes

    For long exposure astrophotography and imaging with Meade LX200 and LX600 models. This extremely heavy duty wedge allows for secure and stable mounting with exceptional vibration damping of larger Meade SC and ACF telescopes.

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    (48 States)
    Model#: 07028
    $699.00

  6. Meade - ETX-90 Astro Maksutov-Cassegrain Telescope with Autostar

    Meade - ETX-90 Astro Maksutov-Cassegrain Telescope with Autostar

    The ETX-90 Maksutov-Cassegrain offers terrific optical quality that is the envy of the telescope industry, the easy to use Meade AutoStar computer handbox with over 30,000 object library, and a solid mount and tripod.

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    (48 States)
    Model#: 3514-04-15
    $399.00

  7. AG Optical 20" iDK Astrograph Telescope

    AG Optical - 20" Dall Kirkham Astrograph Telescope

    The 12" AG Optical astrograph has a medium focal ratio of f/6.7 and features an RMS spot size of 6 microns which makes for pinpoint images of stars at low field of views. This optical tube has a two element <0.5% reflective corrector which makes this possible by reducing many of the common light distortions such as coma.

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    (48 States)
    Model#: 20IDK
    $29,995.00

  8. AG Optical - 17" Dall Kirkham Astrograph Telescope

    AG Optical - 17" Dall Kirkham Astrograph Telescope

    The AG Optical 17" iDK Astrograph is an excellent astrograph for a wide variety of astrophotography. The telescope has a medium focal ratio of f/6.7 with 6 micron RMS spot size. This means that stars appear very pinpoint while still at large field of view.

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    (48 States)
    Model#: 17IDK
    $20,995.00

  9. AG Optical 12.5" Dall Kirkham Astrograph Telescope

    AG Optical - 12.5" Dall Kirkham Astrograph Telescope

    A great benefit behind the Dall Kirkham design is excellent off-axis performance. The 12.5 astrograph from AG Optical is in a carbon fiber tub and has a medium focal ratio with a large aperture to support a variety optical and astrophotography combinations.

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    (48 States)
    Model#: 125IDK
    $10,995.00

  10. Borg - 77 ED II f/4.6 Astrograph Set (2178 + 7150 + 7137 + 7753 + 7835 + 7870)

    Borg - 77 ED II f/4.6 Astrograph Set (2178 + 7150 + 7137 + 7753 + 7835 + 7870)

    advantage of helical focusers is the fine adjustment possible, in part due to the fine pitch of the focusing ring's thread, and in part due to the large diameter of the ring. In the case of the Borg helical focusers, virtually backlash-free ... ... Learn More
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    (48 States)
    Model#: B07746
    $1,635.00

  11. Borg - 45 ED II f/5 Astrograph Set (6045 + 7857 + 7885)

    Borg - 45 ED II f/5 Astrograph Set (6045 + 7857 + 7885)

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    (48 States)
    Model#: B04561
    $850.00

  12. Astro-Tech ED Four Element 65mm f/6.5 Apochromatic Refractor

    Astro-Tech - ED Four Element 65mm f/6.5 Apochromatic Refractor

    This unique apochromatic ED quad refractor astrograph has a four lens/two group/two ED element fully-multicoated optical system.

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    (48 States)
    Model#: AT65EDQ
    $599.00

  13. Astro-Tech - White 72mm f/6 ED Doublet Refractor Optical Tube Assembly

    Astro-Tech - White 72mm f/6 ED Doublet Refractor Optical Tube Assembly

    Astronomy magazine called this scope’s predecessor, the 66mm Astro-Tech AT66ED, “a product everyone should own.”

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    (48 States)
    Model#: AT72WH
    $379.00

  14. Astro-Tech Green 72mm f/6 ED Doublet Refractor Optical Tube Assembly

    Astro-Tech - Green 72mm f/6 ED Doublet Refractor Optical Tube Assembly

    This green optical tube from Astro-Tech is a piece of equipment every advanced serious astronomer should consider. With high quality refractive optics, fabulous accessories, it is pretty amazing.

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    (48 States)
    Model#: AT72GR
    $379.00

  15. Astro-Tech - Blue 72mm f/6 ED Doublet Refractor Optical Tube Assembly

    Astro-Tech - Blue 72mm f/6 ED Doublet Refractor Optical Tube Assembly

    Astronomy magazine called this scope’s predecessor, the 66mm Astro-Tech AT66ED, “a product everyone should own.”

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    (48 States)
    Model#: AT72BL
    $379.00

  16. Astro-Tech Black 72mm f/6 ED Doublet Refractor OTA

    Astro-Tech - Black 72mm f/6 ED Doublet Refractor OTA

    Astro-Tech has built this optical tube by increasing their previous aperture of 66mm to a now 72mm. This allows 9% higher resolution and 19% better light gathering. In addition, a new and updated focuser has been supplied with this telescope.

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    (48 States)
    Model#: AT72BK
    $379.00

  17. Celestron - Omni XLT 150mm Optical Tube Assembly (OTA Only)

    Celestron - Omni XLT 150mm Optical Tube Assembly (OTA Only)

    Omni XLT series features the stable platform of the CG-4 mount and high quality optics. ... Learn More
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    (48 States)
    Model#: 31057-1

    Regular Price: $299.95

    Special Price: $249.95

  18. Borg - 60mm ED f/5.8 (350mm FL) Optical Tube

    Borg - 60mm ED f/5.8 (350mm FL) Optical Tube

    Mini Borg scopes may be mounted directly with a 1/4"-20 threaded screw into the standard mounting block (left), or in an available finder bracket.

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    (48 States)
    Model#: 6260
    $575.00

  19. Olivon Brass 50mm 18x Handheld Spy Telescope

    Olivon - Brass 50mm 18x Handheld Spy Telescope

    The sophisticated Olivon 18x50mm collapsible spyscope with wooden storage chest offers incredible quality and value.

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    Model#: OLBR1850-US
    $199.00

  20. Olivon - Brass 10-30x30 Pirate Scope with Wooden Box

    Olivon - Brass 10-30x30 Pirate Scope with Wooden Box

    This impressive "Pirate" scope comes with a 10-30X zoom eyepiece.

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    Model#: OLBR103030-US
    $47.95

Items 41 to 60 of 914 total

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