About the Orion SpaceProbe 130ST Equatorial Reflector Telescope...
The largest aperture SpaceProbe reflector Orion Telescope is the niftiest Newtonian reflector on an equatorial Orion Telescope Mount we''ve seen in a long time. The Orion SpaceProbe 130ST EQ Reflector Telescope is a step up from the standard SpaceProbe 130 EQ for the more serious beginning or intermediate stargazer who wants additional performance, particularly for targeting deep-sky objects.
Just what''s so nifty about the Orion SpaceProbe 130ST EQ Reflector Telescope? The answer is best described as "short and sweet."
First, the short. This "ST", or "Short Tube", version of the Orion SpaceProbe 130ST EQ Reflector Telescope is indeed more compact than the standard model. The 130ST reflector telescope''s optical tube measures 24" long compared to 33" on the standard 130. The focal length of the Orion Telescope ST''s 130mm (5.1") primary mirror is 650mm (f/5), yielding a wider field of view and brighter images for a given telescope eyepiece focal length.
That brings us to sweet. The 130mm aperture primary is a diffraction-limited parabolic mirror, the same type used on much larger reflector Orion Telescopes costing many times as much. On a short-focal-length design like this one, a parabolic mirror is a must for focusing incoming light to a point and delivering sharp, detailed images. Moreover, the secondary mirror is held in an advanced holder with thin 0.5mm metal vanes, to reduce diffraction spikes and light loss. These features combined with the included 25mm (26x power) and 10mm (65x power) Sirius Plossl telescope eyepieces and quick-release 6x30 achromatic finder scope make this one sweet optical system for astronomy! The Orion SpaceProbe 130ST EQ Reflector Telescope also includes a collimation cap and center-marked primary mirror for easy optical alignment.
The Orion SpaceProbe 130ST EQ Reflector Telescope comes on a sturdy and precise EQ-2 equatorial Orion Telescope Mount with dual setting circles and slow-motion hand controls. After a simple polar-alignment procedure, the EQ-2 mount allows you to easily track celestial objects as they appear to migrate across the night sky, so you can observe them in detail. An optional EQ-2M Orion Telescope Mount electronic drive can be added for automatic tracking (EQ-2M drive sold separately). The adjustable-height aluminum tripod is strong yet lightweight and includes an accessory tray so you can keep eyepieces, flashlights, and other accessories close by while using the Orion Telescope.
The relatively compact Orion SpaceProbe 130ST EQ Reflector Telescope weighs just 27 lbs. once assembled. It'''s an easy telescope to take out to your favorite stargazing spot, whether just outside the back door or in a more distant location away from streetlights and light pollution.
Whether you''re looking for a better-quality first telescope or a nicely portable telescope to complement your big Dobsonian, you''ll love the Orion SpaceProbe 130ST EQ Reflector Telescope.
Orion SpaceProbe 130ST Equatorial Reflector Telescope Features...
- This 5.1" aperture reflector telescope gathers an ample amount of light for great views of the planets and Moon, as well as brighter galaxies, nebulas, and star clusters
- Short 24" long optical tube design for easy portability and fast f/5 focal ratio for pleasing wide-field performance makes the SpaceProbe 130ST EQ a very versatile telescope the whole family can enjoy
- Sturdy EQ-2 equatorial telescope mount and adjustable tripod allows manual slow-motion tracking of celestial objects as they appear to migrate across the night sky
- Complete assembled telescope weighs just 27 lbs. for convenient transport
- Includes two 1.25" Sirius Plossl eyepieces (25mm and 10mm), 6x30 finder scope, 1.25" rack and pinion focuser, tripod accessory tray, collimation cap, Starry Night astronomy software, and more!
Orion SpaceProbe 130ST Equatorial Reflector Telescope Specifications...
Best for viewing: Brighter deep sky
Best for imaging: Lunar & planetary
User level: Beginner
Optical design: Reflector
Finder scope magnification: 6x
Optical diameter: 130mm
Finder scope lens diameter: 30mm
Focal length: 650mm
Focal ratio: f/5.0
Optics type: Parabolic
Glass material: Soda-lime plate
Eyepieces: Plossl 25.0mm, 10.0mm
Magnification with included eyepieces: 26x, 65x
Resolving power: 0.89arc*sec
Lowest useful magnification: 19x
Highest useful magnification: 260x
Highest theoretical magnification: 260x
Limiting stellar magnitude: 13.2
Optical quality: Diffraction limited
Finder scope: 6x30
Focuser: 1.25" Rack-and-pinion
Secondary mirror obstruction: 38mm
Secondary mirror obstruction by diameter: 28%
Secondary mirror obstruction by area: 8%
Mirror coatings/over-coatings: Aluminum & Silicon Dioxide
Mount type: Equatorial
Astro-imaging capability: Lunar & planetary
Dovetail bar system: No
Motor drive compatibility: Clock drive sold separately
Computerized compatibility: Not compatible
Bearing material: Friction bearings
Latitude range: 16-72
Setting circles: Yes
Polar-axis scope: Not available
Counterweights: One 4.8 lb.
Tube material: Aluminum
Tripod material: Aluminum
Counterweight bar length: 8 in.
Diameter of counterweight shaft: 12mm
Height range of mount: 35.00 in. - 55.50 in.
Length of optical tube: 24.0 in.
Weight, optical tube: 6.2 lbs.
Weight, mount/tripod: 18.0 lbs.
Weight, fully assembled: 24.2 lbs.
Additional included accessories: Collimation cap
Warranty: One yearOrion Product Number: 09007