- Ideal for night sky and land-based viewing.
- Yoke for stable movement.
- Finder helps you quickly locate objects.
- Magnification: 525x.
- Objective lens: 60mm.
.com
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.com Review Bushnell has been making excellent beginner
teles for years, and the Deep Space 525x60 does not fail to
live up to their usual standard. Developed for both the beginning
astronomer and the nature lover, this tele has many features
that will surely impress both crowds. As an astronomical
tele its high-power lens is capable of resolving detail on
the moon, the rings of Saturn, and beyond. For the nature lover,
this tele comes with a more user-friendly Altazimuth ,
which moves fluidly up, down, left, and right (as sed to the
circular movement of most astronomical teles). This means
tracking far off objects, or just checking out the scenery is
much, much easier.
This is a standard 60mm refracting (lens based) tele, but
what sets it apart is its dual-use and design, as well as
its generous accessory package. With this tele you get three
quality eyepieces, a 5mm (140x), 12mm (58x), and a 20mm (35x), as
well as a Barlow lens that effectively doubles the magnification
of any eyepiece it is used with. Unfortunately these are .96"
accessories, not the general standard of 1.25", but that should
not prove to be much of a problem. It should also be noted that
magnification is not always the answer; many of the most
breathtaking objects in the sky actually look better with lower
magnification levels. Along with the eyepieces, there is a 5x24mm
finder, a sturdy, adjustable tripod with the previously
mentioned Altazimuth head. This tele is not only versatile,
it is also a complete light-weight package. And in my opinion,
portability is the key to getting out night after night and
enjoying your equipment. But what can you actually see? Well, for
starters, the moon alone can keep most astronomers busy for a
life time. A bit further away, you can resolve the reddish disk
of Mars, the rings of Saturn, and track the major moons of
Jupiter. Outside the Solar System, there are literally thousands
of clusters, double stars, and nebula visible in this tele.
Its longer focal length (f/11.6), however, means that this
tele was really designed for the moon and planets, and this
is clearly where it will excel. A long focal length means that
the tele is capable of more power, but does so at the
expense of the size of the viewing area, which is inherently
limited by the small objective lens (60mm). A small lens simply
does not allow as much light into the tele, meaning high
power views will be dim. The best eyepieces to use with this
tele are the lower-power 20mm and 12mm eyepieces. Lower
powers with small teles guarantee sharper and brighter
views. --Curt Irwin
Pros:
* Versatile Altazimuth
* Complete package of accessories
* Sturdy, portable build
Cons:
* Longer focal length not great for deep space views
* 60mm aperture is on the small side
* Inadequate .96" accessories
From the Manufacturer
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From the Manufacturer Bushnell Deep Space Teles 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. Include all-metal optical tube assembly,
high-quality glass optic objectives for crisp clear views,
full-length variable height tripods, metal yoke ing 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 Teles deliver
amazing detail and will keep viewers enjoying the wonders of the
universe for many years to come.
Specifications for this Bushnell tele include:
* Power/Obj.: 525x60mm
* Style: Refractor
* Focal length: 700mm
* Features: Yoke , Vertical Stabilizer Bar, Diagonal Mirror,
Barlow, Erecting Lens, Finder, Universal Coding System
Some useful tech terms:
Magnification (Power): The magnification of a tele is
determined by dividing its focal length by the focal length of
the eyepiece being used. For example, a 500mm tele with a
5mm eyepiece would magnify objects 100x. Thus, a tele can
provide nearly any magnification required depending on the focal
length of the eyepiece used.
Objective Lens Size (or Aperture): The size of the tele’s
objective lens, or aperture, limits the a 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 tele is being spread over a larger area.
Focal Length: The measured light path of the optical system (tube
length), typically measured in millimeters.
Yoke : A u-shaped altaz . Altaz s move up-down and
left-right.
Finder: On most astronomical teles a lower powered
finder with a wider field of view lets the user quickly
locate the object to be viewed by the high-magnification main
tele.
The Nuts and Bolts of the Deep Space 525x60 Refractor