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StarBlast 4.5 Telescope
Usually Ships in 3 to 5 Days
This Telescope is a Blast of Features!
Our compact, performance-packed StarBlast 4.5 EQ Reflector telescope is a favorite of both beginners and experts alike. It combines the much-heralded Orion StarBlast 4.5” wide-field (f/4.0) parabolic reflector optics with our sturdy EQ-1 equatorial tracking mount and adjustable-height tripod.
The 4.5” aperture reflector telescope’s short focal length serves up a generous chunk of sky in the eyepiece. This tripod-mounted reflector offers an even more pronounced wide-field viewing experience compared to its tabletop counterpart with upgraded eyepieces including a 15mm and 6mm - which have a large 66° apparent field of view.
The included 15mm Expanse telescope eyepiece provides 30x power magnification, while the 6mm Expanse eyepiece bumps up the power all the way to 75x magnification. The 15mm is a great eyepiece to begin observing sessions with, since it provides a large window of night sky for you to view. Once you’ve found an object you’d like to inspect more closely, swap out the 15mm Expanse with the 6mm eyepiece and enjoy a significantly more powerful view.
An included Orion EZ Finder II reflex sight makes it easy to effectively aim the StarBlast 4.5 Equatorial Reflector Telescope anywhere in the night sky. The EZ Finder II projects a small red-dot onto a viewing window so all you have to do is move the telescope until the red-dot is aimed at the area of sky you wish to view through the telescope. With the EZ Finder II reflex sight, starhopping around the sky is a breeze!
With the included Orion EQ-1 equatorial telescope mount, you will be able to keep your target object centered in the telescope eyepiece with only an occasional tweak of one slow-motion cable. The EQ-1, like all equatorial telescope mounts, orients the attached StarBlast 4.5” reflector telescope on two axes of motion (right ascension and declination), allowing you to easily track celestial objects as they appear to move across the night sky. Thanks to this design, it’s easy for anyone to manually track a celestial object using slow-motion control cables. You can even add an optional electronic motor drive (sold separately) to the EQ-1 equatorial mount so it can track objects automatically once you’ve centered the object in the telescope eyepiece. The adjustable-height aluminum tripod allows you to set the StarBlast 4.5 Equatorial Reflector up for comfortable views, while remaining lightweight so the entire assembled telescope is easy to transport to and from your favorite skywatching location.
Optical design - Reflector
Optical diameter - 114mm
Focal length - 450mm
Focal ratio - f/4.0
Optics type - Parabolic
Glass material - Soda-lime plate
Eyepieces Expanse - 15.0mm, 6.0mm
Magnification with included eyepieces - 30x, 75x
Resolving power - 1.02arc*sec
Lowest useful magnification - 16x
Highest useful magnification - 228x
Highest theoretical magnification - 228x
Limiting stellar magnitude - 12.9
Optical quality - Diffraction limited
Finder scope - EZ Finder II
Focuser - 1.25" Rack-and-pinion
Secondary mirror obstruction - 34mm
Secondary mirror obstruction - by diameter 30%
Secondary mirror obstruction by area - 9%
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 - 14-70
Setting circles - Yes
Polar-axis scope - Not available
Counterweights - One 4.8 lb.
Tube material - Steel
Tripod material - Aluminum
Counterweight bar length - 8 in.
Diameter of counterweight shaft - 12mm
Height range of mount - 32.50 in. - 54.75 in.
Length of optical tube - 18.0 in.
Weight, optical tube - 4.0 lbs.
Weight, mount/tripod - 11.9 lbs.
Weight, fully assembled - 20.7 lbs.
Additional included accessories - Collimation cap
Warranty One year
Orion reflector telescope optical tube assembly
15mm Orion Expanse telescope eyepiece (1.25")
6mm Orion Expanse telescope eyepiece (1.25")
Telescope equatorial mount
EZ Finder II finder scope
Tripod accessory tray
Slow-motion control cables
Latitude adjustment T-bolt
Starry Night special edition software
A wide-field reflector telescope with enough aperture to get great views of the Moon, planets, and many bright deep-sky objects
Works amazingly well with the included Expanse telescope eyepieces which yield a very wide 66° apparent field of view
Fast f/4 optics and a short focal length provide a very wide field of view, making it easy to locate celestial objects without having to hunt around
The EQ-1 equatorial telescope mount makes tracking night-sky objects extremely easy using the included slow-motion controls
Includes an EZ Finder II reflex sight for easy aiming, 15mm and 6mm 1.25" Expanse eyepieces, collimation cap, Starry Night software, and more!
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