LightBridge Mini 114 4.5" tabletop altazimuth mini-Dob reflector

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This Meade Mini 114 Dobsonian-style tabletop telescope is a great grab-and-go altazimuth mount telescope for spur-of-the-moment tabletop observing. It has a simple design that makes it easy for beginners to use, and its no-tool setup means you are up and observing in no time.

The Meade Mini 114 mini-Dob has a fully collimatable parabolic primary mirror, just like the big Meade LightBridge Dobsonian scopes. It has a generous 114mm (4.5") aperture that gathers 265 times as much light as the sharpest eye. This provides bright, clear views of faint celestial objects and shows the Moon’s mountains and craters in crisp detail. The beginnings of serious planetary observing are also possible (Saturn's rings are clearly visible with the supplied 50x eyepiece), particularly when a Barlow lens or higher power eyepiece is used to increase the magnification. And, thanks to its wide field of view and good light-gathering, you’ll be able to observe comets and many of the more famous deep-sky objects, like the Orion Nebula, the Swan Nebula, the Beehive open cluster, globular clusters M13 and M22, and much more.

Weighing an easily-handled 10.8 pounds, the compact Meade LightBridge Mini 114 is a tabletop mini-Dobsonian telescope that you can pick up with one hand and take out to observe whenever the urge strikes you. It’s also stylish enough to be a decorative fixture on your bookshelf or desk.

This Meade LightBridge Mini 114 Optical System . . .

Reflector optical tube: 114mm (4.5”) aperture 450mm focal length f/4 collimatable parabolic mirror Newtonian reflector. The primary and diagonal mirrors are aluminized for high light transmission and overcoated with durable silicon dioxide (quartz) for long life. The optical tube attaches to the single-arm tabletop mini-Dobsonian mount by means of a Vixen-style dovetail bar. This lets you use the 114mm optical tube on any altazimuth or equatorial mount that uses a Vixen-style dovetail. 

Rack and pinion focuser: The 1.25” focuser has dual focusing knobs for precise image control with either hand. The large focus knobs are easy to operate, even while wearing gloves or mittens in cold weather.

Two eyepieces: You get two 1.25" modified achromatic 3-element eyepieces: a 26mm (17.3x) and a 9mm (50x). The eyepieces have antireflection coatings on their lens surfaces for sharp images and good contrast. An optional 2x Barlow lens will double those powers to 35x and 100x.

Finderscope: An illuminated red dot finderscope attaches to the side of the optical tube. This battery-operated red LED finder projects a small dot of red light onto a clear plate inside the finder housing. When you look through the finder, the red dot appears to float in space wherever your telescope is pointing, day or night, making it easy to quickly and intuitively center the scope on distant objects by moving your scope until the red dot seems to rest on top of your target. The red aiming dot can be seen from virtually any distance behind the finder, from two inches to two feet, so it is easy for eyeglass wearers to use.

This Meade LightBridge Mini 114 Mount . . .

Dobsonian-type tabletop mount: TThe simple and durable painted fiberboard mini-Dobsonian altazimuth mount uses the familiar "lazy Susan" Dobsonian base design for right/left motion at the touch of a finger, while the single vertical arm that holds the optical tube allows smooth up/down motion. The base has rubber feet that let it sit securely on a tabletop or any other suitable horizontal surface. The compact mount weighs 10.8 lbs (4.9 kg) and damps vibrations quickly at high powers. It provides smooth right/left and up/down manual motion of the optical tube. The mini-Dobsonian mount is suitable for low to medium power casual astronomical observing, and will let you easily track objects as they move across the sky. 

A large knob on the mount's vertical arm allows you to adjust the friction on the scope in its up/down motion. This lets you control how smoothly the mount moves as you manually push the tube to follow objects moving through the sky.

Bonus Software . . .

Also included with the Meade Mini 114 is a planetarium software program on DVD that will calculate planetary positions and the times for the best planetary viewing. It will also display sky charts to let you identify stars, constellations, and the brighter deep space objects visible in the Mini 114 on any given night.

Highest Useful Magnification:
This is the highest visual power a telescope can achieve before the image becomes too dim for useful observing (generally at about 50x to 60x per inch of telescope aperture). However, this power is very often unreachable due to turbulence in our atmosphere that makes the image too blurry and unstable to see any detail.

On nights of less-than-perfect seeing, medium to low power planetary, binary star, and globular cluster observing (at 25x to 30x per inch of aperture or less) is usually more enjoyable than fruitlessly attempting to push a telescope's magnification to its theoretical limits. Very high powers are generally best reserved for planetary observations and binary star splitting.

Small aperture telescopes can usually use more power per inch of aperture on any given night than larger telescopes, as they look through a smaller column of air and see less of the turbulence in our atmosphere. While some observers use up to 100x per inch of refractor aperture on Mars and Jupiter, the actual number of minutes they spend observing at such powers is small in relation to the number of hours they spend waiting for the atmosphere to stabilize enough for them to use such very high powers.
150x
Visual Limiting Magnitude:
This is the magnitude (or brightness) of the faintest star that can be seen with a telescope. The larger the number, the fainter the star that can be seen. An approximate formula for determining the visual limiting magnitude of a telescope is 7.5 + 5 log aperture (in cm).

This is the formula that we use with all of the telescopes we carry, so that our published specs will be consistent from aperture to aperture, from manufacturer to manufacturer. Some telescope makers may use other unspecified methods to determine the limiting magnitude, so their published figures may differ from ours.

Keep in mind that this formula does not take into account light loss within the scope, seeing conditions, the observer’s age (visual performance decreases as we get older), the telescope’s age (the reflectivity of telescope mirrors decreases as they get older), etc. The limiting magnitudes specified by manufacturers for their telescopes assume very dark skies, trained observers, and excellent atmospheric transparency – and are therefore rarely obtainable under average observing conditions. The photographic limiting magnitude is always greater than the visual (typically by two magnitudes).

12.8
Focal Length:
This is the length of the effective optical path of a telescopeor eyepiece (the distance from the main mirror or lens where the lightis gathered to the point where the prime focus image is formed). Focallength is typically expressed in millimeters.

The longer the focallength, the higher the magnification and the narrower the field of viewwith any given eyepiece. The shorter the focal length, the lower themagnification and the wider the field of view with the same eyepiece.

450mm
Focal Ratio:
This is the ‘speed’ of a telescope’s optics, found by dividing the focal length by the aperture. The smaller the f/number, the lower the magnification, the wider the field, and the brighter the image with any given eyepiece or camera.

Fast f/4 to f/5 focal ratios are generally best for lower power wide field observing and deep space photography. Slow f/11 to f/15 focal ratios are usually better suited to higher power lunar, planetary, and binary star observing and high power photography. Medium f/6 to f/10 focal ratios work well with either.

An f/5 system can photograph a nebula or other faint extended deep space object in one-fourth the time of an f/10 system, but the image will be only one-half as large. Point sources, such as stars, are recorded based on the aperture, however, rather than the focal ratio – so that the larger the aperture, the fainter the star you can see or photograph, no matter what the focal ratio.

f/4
Resolution:
This is the ability of a telescope to separate closely-spaced binary stars into two distinct objects, measured in seconds of arc. One arc second equals 1/3600th of a degree and is about the width of a 25-cent coin at a distance of three miles! In essence, resolution is a measure of how much detail a telescope can reveal. The resolution values on our website are derived using the Dawes’ limit formula.

Dawes’ limit only applies to point sources of light (stars). Smaller separations can be resolved in extended objects, such as the planets. For example, Cassini’s Division in the rings of Saturn (0.5 arc seconds across), was discovered using a 2.5” telescope – which has a Dawes’ limit of 1.8 arc seconds!

The ability of a telescope to resolve to Dawes’ limit is usually much more affected by seeing conditions, by the difference in brightness between the binary star components, and by the observer’s visual acuity, than it is by the optical quality of the telescope.

1.02 arc seconds
Aperture:
This is the diameter of the light-gathering main mirror or objective lens of a telescope. In general, the larger the aperture, the better the resolution and the fainter the objects you can see.
4.5"
Weight:
The weight of this product.
10.8 lbs.
Telescope Type:
The optical design of a telescope.  Telescope type is classified by three primary optical designs (refractor, reflector, or catadioptric), by sub-designs of these types, or by the task they perform.
Reflector
Warranty:
1 year
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LightBridge Mini 114 4.5" tabletop altazimuth mini-Dob reflector

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Our Product #: MLB114
Manufacturer Product #: 203002
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The Meade LightBridge Mini 114 tabletop reflector is designed for beginning or casual astronomers who want to experience for themselves a dazzling comet, star cluster, or nebula . . . without spending a fortune.





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