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Bushnell 78-9512 Deep Space 420 x 60mm Refractor Telescope

2.4 out of 5 stars 11 customer reviews

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  • Designed for night sky and land-based viewing
  • Yoke mount and diagonal mirror
  • Quickly locate the object to be viewed with the finderscope
  • Magnification: 420x
  • Objective lens: 60mm
3 new from $40.00 8 used from $34.99

Technical Details


Product Description

From the Manufacturer

Bushnell Deep Space Telescopes are a great value for both the beginner and intermediate astronomer. Fully featured for night after night of fun and excitement exploring deep into space. With all-metal optical tube assembly, high-quality glass optic objectives for crisp clear views, full-length variable height tripods, metal yoke mounting systems, all-metal accessory trays, rack and pinion focusing mechanisms and patented universal coding system, they can help you take a voyage to hundreds of far-away galaxies, learn about the moons of Jupiter, and explore the craters of the Moon. Meticulously engineered, the advanced optics of Bushnell Telescopes deliver amazing detail and will keep viewers enjoying the wonders of the universe for many years to come.

    This is a refractor telescope. Refractors (also known as a dioptrics) capture light with a lens at the front of a long tube and send it to an eyepiece at the other end. They look, in other words, just like what most people think of when they hear the word "telescope."
    Refractors offer--potentially, at least--the cleanest images of any telescope design. They are simple and reliable (the sealed tube is maintenance-free), and are good for both celestial and terrestrial viewing.
   
  • Read more about different telescope designs in our buying guide
  • Specifications for this Bushnell telescope include:
    • Power/Obj.: 420 x 60mm
    • Style: Refractor
    • Focal length: 700mm
    • Mount: Yoke
    • Key Features: Land Eyepiece
    Some useful tech terms:

    Magnification (Power): The magnification of a telescope is determined by dividing its focal length by the focal length of the eyepiece being used. For example, a 500mm telescope with a 5mm eyepiece would magnify objects 100x. Thus, a telescope can provide nearly any magnification required depending on the focal length of the eyepiece used.

    Objective Lens Size (or Aperture): The size of the telescope’s objective lens, or aperture, limits the amount of power that can be used effectively. As the magnification of an object increases, the brightness of the image decreases. This is because the light gathered by the telescope is being spread over a larger area.

    Focal Length: The measured light path of the optical system (tube length), typically measured in millimeters.

    Yoke Mount: A u-shaped altaz mount. Altaz mounts move up-down and left-right.

    Finderscope: On most astronomical telescopes a lower powered finderscope with a wider field of view lets the user quickly locate the object to be viewed by the high-magnification main telescope.

    The Nuts and Bolts of the Bushnell 420x60 Refractor

    1. 60mm Objective Lens
    2. Telescope Main Tube
    3. Altazimuth Yoke Mount
    4. Azimuth Lock Knob
    5. Tripod Legs
    6. Tripod Leg Middle Section
    7. Accessory Tray Brace
    8. Accessory Tray
    9. Tripod Leg - Lock Screws
    10. Rack & Pinion Focus Mechanism
    11. Diagonal Mirror
    12. Eyepiece
    13. Finderscope Mount
    14. Finderscope Focus Adjustment
    15. Finderscope Adjustment Screws
    16. Finderscope
    17. Altitude Lock Knobs


    Product Information

    Product Dimensions 30.8 x 8.7 x 6.5 inches
    Item Weight 7.1 pounds
    Shipping Weight 8 pounds
    ASIN B00005AXJ2
    Item model number 789512
    Customer Reviews
    2.4 out of 5 stars 11 customer reviews

    2.4 out of 5 stars
    Best Sellers Rank #26,175 in Camera & Photo
    #187 in Camera & Photo > Binoculars & Scopes > Telescopes > Refractors
    Discontinued by manufacturer Yes
    Date first available at Amazon.com March 27, 2001

    Technical Specification

    Warranty & Support

    Product Warranty: For warranty information about this product, please click here

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    Customer Reviews

    Top Customer Reviews

    By A Customer on February 21, 2004
    Nothing will kill a beginning astronomer's interest quicker than this flimsy "department-store" telescope. Never buy a telescope based solely on claims like "420x!". The highest magnification this telescope can realistically provide under the best of viewing conditions is about 50-60x per inch of aperture, or 120-140 power in this case. Light-gathering ability is by far the most important consideration when purchasing a telescope. A much better choice for a first scope would be a 4-inch dobsonian mounted reflecting telescope, available for just a few more dollars; you DO get what you pay for.
    Comment 44 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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    This scope is NOT a good starter scope for anyone interested in a real pursuit of astronomy. Here's why:

    1. The objective is too small, only 60 mm, 2.36 inches, so it is too small to bring in the light necessary for even a beginning look at the universe. I suppose it is adequate for the moon, but that is it. The planets will appear as very small disks. One will be able to see Saturn's rings, but the image will be very small. Forget it for deep sky objects, clusters, galaxies, etc.

    2. The mount is an altazimuth, which will not follow the celestial object in the sky. The earth is rotating, and anyone focusing on a star or moon will quickly find the object drifting out of the field of vision. A better mount is an equatorial mount which makes it much easier to track objects.

    3. The mount will vibrate when touched, which will cause the image in the eyepiece to "shiver", which is very frustrating.

    Even for the low price, don't be enticed by this scope; it has too many flaws. Save your money for a larger scope with a better mount.

    kone
    Comment 27 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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    This scope is not really very good for viewing planets but is ok for the moon if you stick with the 20MM eyepiece, the 5MM, giving about 140X, is just to much for this mount as it vibrates very easily and is hard to hold anything in the FOV for very long! I think it would be better for a person to buy a 4.5 inch reflector with a Dobsian mount for just a few bucks more.
    Comment 12 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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    Bushnell always makes quality products that are still affordable for the everyday Joe, no exception here. This is a very nice telescope and a great baragain at its price. This is a perfect way for children (or adults) to learn more about stars, planets and everything else that lies out there in the universe. I highly recommend this product. You'll be amazed at what you've been missing out there. :o)
    1 Comment 100 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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    By mauibeach on September 22, 2007
    This was what I chose for my 15 year prize from work. It went to the curb for trash pick up just the other day. Junk is what it is. I was so excited to have a new back deck this summer and use the telescope with my boys. Tried for about 2 hours and wasn't worth my time. The view finder was no help. We saw more without the lenses in! Don't wast your money.
    Comment 8 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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    This is not a good beginner or child telescope. It's just a not-so-cheap toy.
    I have purchased this for my father-in-law. He asked me for a cheap telescope and I bought this for around $30 in an auction online.
    First: the manual is just a piece of junk. It does not offer you any detail about how to do anything.
    The quality of the finish is awful: I could barely turn the adjustment screws of the finder - with a plier! The focuser is totally loose, you can move it sideways/up-and-down, the diagonal is totally loose too. The eyepieces are not that bad (the 20mm is fine and sharp), but the complete assembly is totally inadequate.
    But THE WORST IS THE TRIPOD and MOUNT. It's an altazimuthal with no tracking controls. Once you can find the object (forget the finder: impossible to align, worse image ever, very dark, not directionally correct), whenever you can focus (not hard on the 20mm, but nearly impossible on the 5mm due to a lack of fine focusing), it's just a challenge to center the object on the eyepiece. The earth is rotating, and you can get about 45 seconds of observation before your target disappears on the 20mm eyepiece (about 4 times less with the 5mm). I take about 3 minutes finding a planet, then it's a real pain to keep observing it.
    The optics are not bad, but you have a very limited aperture (60mm lenses), which will have you to look at the moon, planets and that's all.

    DO NOT BUY THIS TELESCOPE. You NEED A BETTER MOUNTING. And a better focuser and diagonal. It's just too sloppy and loose to give any decent observation. For about the same price, you can get a mini-dob table-top reflector with 4 times more aperture area (remember that a 120mm disc has about 4 times more area than a 60mm disc).
    2 Comments 2 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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