Bushnell Deep Space 525 x 3" Reflector Telescope

by Bushnell

Product Details

• Item Weight: 19.4 pounds
• Shipping Weight: 26 pounds
• Shipping: Currently, item can be shipped only within the U.S.
• ASIN: B0000A0AJ0
• Item model number: 78-9003
• Average Customer Review: 3.6 out of 5 stars  See all reviews (5 customer reviews)
• Amazon Best Sellers Rank: #49,984 in Camera & Photo (See Top 100 in Camera & Photo)
• Discontinued by manufacturer: Yes
• Date first available at Amazon.com: June 11, 2003

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.

Reflectors     This is a reflector telescope. Reflectors (also known as Newtonian reflectors or catoptrics) capture light with a mirror at the bottom of a tube, which sends the image to the eyepiece at the top of the tube.    First-time telescope users sometimes have difficulty with the idea of looking through the side of a telescope, but the big draw for reflectors is that they are by far the cheapest to manufacture--and thus offer the best value--of all telescope types. They also generally have zero chromatic aberration.     Read more about different telescope designs in our buying guide

Specifications for this Bushnell telescope include:

• Power/Obj.: 525x3"
• Style: Reflector
• Focal length: 700mm
• Yoke Mount
• Vertical Stabilizer Bar,
• Barlow
• Finderscope
• Universal Coding System
• Camera Adaptable
• Upgradeable to 1.25" Format

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 Deep Space 525x3" Refractor

Finderscope Rack & Pinion Focusing Mechanism 965" Format Eyepiece Vertical Stabilizer Bar Azimuth Lock Screw Tripod Leg Tripod Leg Middle Section Accessory Tray Brace Accessory Tray Tripod Leg Lock Screws Stablizer Bar Mounting Screw Alt-Azimuth Yoke Mount Primary Mirror (Internal) Main Telescope Tube Vertical Fine Adjustment Screw Finderscope Focus Adjustment Finderscope Adjustment Screws

Product Description

mfr: Bushnell
- 523 x 3" reflector
- Focal length: 700
- Eyepieces: 4, 20
- Magnifications: 35, 105, 175, 525
- Yoke mount
- Vertical stabilizer bar
- Barlow
- Finderscope
- Universal coding system

Customer Reviews

Most Helpful Customer Reviews

27 of 27 people found the following review helpful:

3.0 out of 5 stars Good for the money, however...., June 17, 2005

By 

David H. Holton - See all my reviews
(REAL NAME)   

This review is from: Bushnell Deep Space 525 x 3" Reflector Telescope (Electronics)

As an owner of this particular telescope, and a very-much-amateur astronomer I have a few tips to help you get the most out of your instrument.

First of all, this is a tool just like any others. It's simplicity can fool you. Give yourself some time to practice with it for awhile on easily-viewed objects (the moon, Jupiter, Venus, your neighbor, etc).

You will absolutely want to calibrate the finder scope. To do this, use the smallest magnification eyepiece (the 20mm) and focus on a solid object at least 200 yards away (a stop sign, a street light, whatever) and get it properly focused and dead center in the eyepiece. Then start adjusting the finder scope so it's crosshairs are dead center on the object. You should consider doing this before every viewing session.

This telescope has two mirror covers for the main tube. The directions do NOT specify this. The first is a small cap on the end of the tube. Use just this one if you're viewing in an area with a lot of ambient light. However, the whole piece it attaches to also comes out. If you'll be doing some star-hunting in a remote area free from ambient light, remove the whole thing to let as much light as possible reach the mirror. You will be stunned how much brighter your images will be!

There are two versions of this scope out there, one with a motorized mount and one without. I have the one with a manual mount on an aluminum tripod. It's a bit finicky. You might have to 'overshoot" when lining up on a target, then lock it down and wait for the scope to 'settle'. Again, practice. It might seem a bit frustrating at first but you'll get the hang of it. best do to this alone before you start showing off the night skies to your friends.

Now then, on to the eyepieces and my reccomendations:

First, get an idea of what you want to look at. You can 'sight' alongside the finder scope to get to the general area of the object you want to view. Then, use the finder scope to line up your crosshairs. Afterwards, have a peek through your eyepiece and do any fine-tuning you need to do to center it.

Always, always, always start out with the lowest magnification lens, the 20mm. This will give you 35X magnification. You'll have bright images, a wide field of view, and objects will remain in view for quite awhile.

Next stage in magnification is to insert the 20mm eyepiece into the 3X Barlow adapter. This will run up your magnification to 105X. The field of view will be noticeably narrower, but you'll have a really bright image to look at. Count on doing some more focusing. The moon looks absolutely stunning at this magnification. This will also give you more than enough magnification for Jupiter, Saturn, Mars, Venus, and most double stars.

Feeling brave? Let's move up to the 4mm eyepiece. You are now running at 175X. Viewing will be signifigantly more difficult now. This level is excellent for deep-field viewing of stars and nebula, but be aware, objects will pass out of view fairly quickly (a few minutes, at best). Light levels will be much more dim and harder to focus on. You will want very good viewing conditions to take advantage.

On to 525X. Yes, it does work, but be warned. Light levels will be exceptionally dim and images will be very blurry no matter how much you fiddle with the focus. The slightest touch on the scope will set up some pretty intense shaking of the image. You will need outstanding sky conditions to do any viewing at this level. More to the point, based on Earth rotation, objects will pass from the right side of the view to the left in about 20 seconds. I'm not kidding. Do NOT bother trying to use this under less-than-ideal conditions, you will only dissapoint yourself.

All in all, it's a great scope for the money, and a great way to get familiar with what you really want in a telescope when you're ready to shell out bigger bucks. have fun with this.

Oh last but not least, invest in a star chart program. You'll be glad you did.

And remember, to KEEP.....LOOOKING....UP!

12 of 17 people found the following review helpful:

4.0 out of 5 stars This is pretty great!, October 25, 2003

A Kid's Review

This review is from: Bushnell Deep Space 525 x 3" Reflector Telescope (Electronics)

I think this telescope is pretty great because it has equatorial mount and manufactured by a company that is expert on telescopes (so you can trust it). But it is not so good because of its weight (246 pounds). Equatorial mount is a type of mounting the compensate the Earth's rotation, making the telescope easier to follow the objects in the sky. It's also a reflector, my favorite type of telescope between the two main types of optical telescopes (reflector and relractor). It's excellent for observing very faint objects, such as nubulas. Most refractors cannot observe these faint objects because it's lens absorb precious light. However, reflecters use mirrors and mirrors reflect light instead aborbing it. I recommend this telescope for begininers, intermediate, and between intermediate and experts.

5.0 out of 5 stars GREAT!, November 10, 2010

By 

kman - See all my reviews

This review is from: Bushnell Deep Space 525 x 3" Reflector Telescope (Electronics)

I bought this telescope for my kids and they absolutely loved it! While it takes some getting used to, it's wonderful for looking at simple things like the moon. The important thing I found was to read the instructions. Don't immediately start plugging in lenses!

All in all, I would recommend this to a family that hasn't had a telescope before and would like to use a simple one first.