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Orion StarBlast 4.5 Astro Reflector Reviewed – Recommended Scope

So you want a telescope, and you want one that can give excellent views, without all the frills. Orion’s StarBlast 4.5 Astro Reflector is a favorite among beginner astronomers, due to its low price and the fact that it’s been in the scene for around fifteen years.

However, does it stand the test of time when compared to similarly designed and lower-cost telescopes? Let’s find out.

How It Stacks Up

Ranked #4 of 14 ~$200 telescopes

Rank 1
Rank 4
Orion StarBlast 4.5 Astro
What We Like

What We Don't Like

  • Cannot attach DSLRs
  • Expensive compared to similar offerings
  • Cheap, eyepieces
  • Not the best value

Bottom Line
Recommended Product Badge

There are better options than the StarBlast below its price range, some even boasting a larger aperture, and by the time you take into account spending money on additional accessories(that’s if you intend to), you’d be able to buy a 6ʺ Dobsonian. You could also get a larger 5” tabletop scope or the arguably superior equatorial StarBlast II for the same price. The StarBlast 4.5 isn’t a bad scope by any means. Its wide footprint, light weight, carry handle and wide field of view make it great for a child to use, and it excels at both high-power and wide-field viewing. So if you’re buying it for a kid, or simply nostalgic, by all means, get the StarBlast.

For purchasing this telescope, we'd recommend Orion's Telescope.com, since it's the manufacturer's own e-commerce platform. Telescope.com also offers a 30-day price match guarantee, 30-day money-back guarantee, free technical support, and next-day shipping.

Optical Performance Of Starblast 4.5

The Orion StarBlast is a 4.5ʺ f/4 Newtonian with a focal length of 450mm. Originally designed to compete with the sadly-discontinued Edmund Astroscan, the StarBlast 4.5 excels as a wide-field telescope, offering a nearly 4° field of view (that’s eight full moons across!), along with a 32 mm Plossl or 24 mm wide-field eyepiece (not included). Meade’s Lightbridge Mini 114 and Zhumell’s Z114, along with the Scientifics Direct Astroscan Millenium, are more or less copycats of the StarBlast, and use the same 114 mm f/4 OTA.

While primarily a wide-field instrument, the StarBlast performs pretty well on the Moon and planets, much better than the 60-90mm refractors often cited as good beginner scopes. And of course, it’s no contest when it comes to deep-sky objects. It does need collimating, but that’s an easy task. The focuser is a standard 1.25” rack-and-pinion unit.

The StarBlast attaches to its mount with a simple clamping tube ring, allowing you to slide the tube back and forth and rotate it. For mounting it on a full-sized equatorial or alt-azimuth mount, you’ll need a pair of tube rings and a dovetail plate.


The StarBlast 4.5 Astro includes two eyepieces: 17mm and 6mm Kellners providing 26x and 75x respectively. The 17 mm doesn’t go to low enough power to get the most out of the wide field that the StarBlast can offer, and the 6 mm has a tiny eye lens that makes it basically unusable. Neither eyepiece is particularly sharp, the field of view is narrow, and they don’t include eye guards. Getting the most out of your StarBlast will necessitate buying at least two if not three additional eyepieces.

The scope comes with a standard red-dot finder as well, which is more than adequate for aiming the StarBlast given its ultra-wide field of view.

Reviewing Mount Features

The StarBlast 4.5 Astro was a pioneering scope for introducing the tabletop Dobsonian mount to the world. While not a true “Dobsonian” due to the single side bearing which doesn’t use any Teflon pads, the tabletop mount of the StarBlast is lightweight, compact, easy to aim, and extremely cheap to construct. 

Orion 10015 StarBlast 4.5 Astro Reflector Telescope

Price – Price not available

Orion Starblast 4.5 Astro’s mount has a wider footprint than some competing models, which makes it more steady and less prone to being knocked over.

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Starblast 4.5 astro Orion

However, you’ll need a milk crate and a chair to comfortably use it. A Rubbermaid bin or similar will also work as a stand, but hamper the scope’s portability. Sticking the scope on top of a bar stool or car hood also works in a pinch, or you could make a custom stand/tripod for it pretty cheaply.

Alternative Recommendations

The StarBlast isn’t a bad telescope, but there are other options at the same price that provide better value.

  • The Zhumell Z114 is literally the same telescope as the StarBlast but with a 10mm Kellner that’s actually usable instead of a 6mm, and at a lower price.
  • The Zhumell Z130 is bigger than the StarBlast and comes with better accessories.
  • The Sky-Watcher Heritage 130P has the same optics as the Zhumell Z130, but its tube collapses for transport.
  • The Orion StarBlast II 4.5EQ has the same optical tube as the regular StarBlast, but perched atop a more versatile, if less sturdy EQ1 mount and with vastly superior Plossl eyepieces included.

Aftermarket Accessory Recommendations

A 6mm “gold-line” eyepiece (75x) would be a good replacement for the StarBlast’s abysmal stock 6mm Kellner, and a 2x Barlow lens will allow you to double the power to 150x, which is about the limit of what the StarBlast can handle. 

For low power, a 25mm Plossl provides 18x and a 3-degree field of view. A 25mm Agena Starguider, while expensive, will deliver sharper stars at the edges and extend the field out to about 3.3 degrees.

You could add in additional eyepieces in the 9-15mm range to further extend your magnification options, but a good high-power eyepiece and good 24-26mm eyepiece for the maximum possible field of view is all you probably need with the StarBlast.

Lastly, one other accessory you might want to pick up is Orion’s UltraBlock UHC filter. It doesn’t “filter out” light pollution but rather increases contrast on nebulae making them appear brighter against the background and bringing out subtle detail. This filter works great with the StarBlast, which will show you huge swaths of sky containing regions like the North America, Veil, Lagoon, Trifid, Swan, and Eagle Nebula. Even under a dark sky, the UHC brings out more contrast by darkening the sky background.

What can you see?

The StarBlast is optimized for wide fields. It’s primarily made for low-power viewing of nebulae and star clusters. That being said, it’s a pretty good lunar and planetary instrument too.

Even from the suburbs, the Veil Nebula is fantastic with an oxygen-III or UHC filter. The Milky Way is very fun to explore, in both summer and winter. Open clusters are a joy with this telescope. Under dark skies, the many dark nebulae that cross the summer Milky Way are great, challenging objects to hunt for with the StarBlast. The Andromeda Galaxy’s dust lane is an easy catch with a wide-field scope like the StarBlast, though few other galaxies will present any meaningful detail due to the StarBlast’s small aperture. Bright emission nebulae like Orion, the Lagoon, and the Swan look magnificent, especially from dark skies or with a UHC filter.

At high magnification, Jupiter’s Great Red Spot and cloud belts are no problem. You may just be able to spot Jupiter’s moons and their shadows crossing the planet.

Saturn’s Cassini Division is easy to spot on a night of good seeing, as are a few of its brightest moons. Venus’ phases are easy, and Mars will show a few dark regions and the ice cap when it’s at or near opposition. Uranus and Neptune, if you can find them, are little more than star-like bluish dots with the StarBlast.

Optical Design:Newtonian Reflector
Mount Design:Alt-Azimuth
Focal Length:450mm
Focal Ratio:f/4
Focuser:1.25" Rack-and-pinion
Fully Assembled Weight:13 lbs
Warranty:1 year limited

3 thoughts on “Orion StarBlast 4.5 Astro Reflector Reviewed – Recommended Scope”

  1. The eyepieces aren’t plossls. I’ve seen several mentions of both being plossls, and I did take the 17mm apart to confirm it. There are definitely 2 doublets in 2 groups. I guess they could be some other similar design, but they definitely aren’t Kellners, MA, SMA or RKE.


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