90mm FMC Aperture300× MagnificationZero-Collimation SetupSmartphone Astro-Adapter
The Cosari AstroScope Pro pairs a 90mm fully multi-coated crown-glass objective lens with a 600mm focal tube for razor-sharp views of lunar craters, Jupiter’s Galilean moons, and Saturn’s rings—setting up in under 3 minutes without tools or collimation.
$189.99 $379.99 SAVE 50% $159.99 each when you buy 2
Cheap department-store telescopes use dim 60mm plastic lenses that turn planets into blurry blobs. AstroScope Pro uses a precision-ground 90mm fully multi-coated (FMC) green-film glass doublet that maximizes light gathering and eliminates purple chromatic aberration around the Moon and bright stars.
Swap effortlessly between the wide-field 25mm Kellner eyepiece (24×) for sweeping views of the Orion Nebula and Pleiades, the high-power 10mm eyepiece (60×) for planetary bands, and the 3× achromatic Barlow lens to push up to 180×–300× on crisp nights.
Lock any iPhone or Android onto the eyepiece with the self-centering smartphone adapter and trigger shake-free exposures using the included wireless Bluetooth shutter remote—while the heavy-duty stainless steel tripod dampens wind vibration in under 1 second.
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Observatory-Grade Views of the Moon, Saturn & Deep Sky in 3 Minutes
$189.99$379.99SAVE 50%
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✓ See What Cheap Scopes Miss: the Cosari AstroScope Pro features a true 90mm fully multi-coated (FMC) optical glass objective lens that collects 65% more light than 70mm entry models—revealing individual craters along the lunar terminator, Jupiter’s cloud belts, and Saturn’s rings.
✓ Zero-Collimation Refractor Design: unlike finicky reflector tubes whose mirrors drift out of alignment in the trunk of your car, AstroScope Pro’s sealed optical tube never requires mirror collimation and sets up in under 3 minutes without tools.
✓ Night Sky + Daytime Spotting in One: the included 45° erect-image BAK4 prism keeps images right-side-up and left-to-right correct, making it just as powerful for watching coastal ships, mountain ridges, and nesting eagles by day as galaxies by night.
✓ Ready for Instant Astrophotography: clip your phone into the universal eyepiece dock, pair the wireless Bluetooth shutter button, and capture tack-sharp shots of the Moon and eclipses without touching the telescope.
Cosari AstroScope Pro 90/600mm optical tube, full-height stainless steel AZ tripod with accessory tray, K25mm & K10mm 1.25" eyepieces, 3× Barlow lens, 5×24 crosshair finderscope, 45° erect-image diagonal prism, moon filter, smartphone adapter, wireless shutter remote, padded travel backpack, star map & quick-start guide.
Free US shipping. Orders ship within 1–2 business days with full tracking. Return within 30 days of delivery for a full refund under our 100% money-back guarantee. Faulty, damaged or wrong item: we email a prepaid return label and you choose a refund or replacement. See our refund policy.
Not all telescopes are equal. Cosari AstroScope Pro leads on aperture, glass clarity, and ease of setup — and is certified Best Choice of 2026.
| Feature | Cosari AstroScope Pro★★★★★ | Others★★☆☆☆ |
|---|---|---|
| Objective Lens Aperture | 90 mm FMC Glass | 60–70 mm Uncoated |
| Light Transmission | 99.2% | ~78% |
| Max Magnification Kit | 24×–300× Included | Single Eyepiece |
| Tool-Free 3-Min Setup | ✓ | ✕ |
| Stainless Steel Tripod | ✓ | ✕ |
| Phone Mount + Remote + Bag | ✓ | ✕ |
| Award Winner 2026 | ✓ | ✕ |
Large multi-coated crown glass lens pulls in faint star clusters, planetary bands, and crisp lunar ridges.
Sealed refractor tube stays permanently aligned—never waste a clear night adjusting tiny mirror screws.
No tools required. Unfold the stainless tripod, click the tube into the dovetail saddle, and observe.
Dampens hand and breeze vibrations fast so high-magnification views of Saturn stay rock-steady.
45° erect-image prism delivers upright views of wildlife, boats, and coastlines during the day.
Comes with 2 eyepieces, 3× Barlow, moon filter, phone mount, Bluetooth shutter, and travel backpack.
Extend the stainless steel legs to your comfortable viewing height and secure the 90mm optical tube with one thumbscrew.
Use the 5×24 crosshair finderscope and smooth panhandle arm to center the Moon, Jupiter, or Saturn in seconds.
Dial the precision rack-and-pinion focuser for a tack-sharp view, or clip on your phone and click the Bluetooth remote.
You can see hundreds of Moon craters, mountain ranges, and maria in razor-sharp 3D detail, Saturn’s ring system, Jupiter and its four largest Galilean moons, Venus’s phases, the Orion Nebula, the Andromeda Galaxy, and bright star clusters like the Pleiades.
Yes. Unlike complex equatorial mounts or reflector scopes that require mirror collimation, AstroScope Pro uses an intuitive pan-and-tilt alt-azimuth mount that sets up in 3 minutes without tools.
Absolutely. The included universal smartphone adapter clamps securely onto either eyepiece and aligns your phone camera with the optics. Use the included Bluetooth shutter remote so your hand doesn’t shake the scope.
Yes. Because it includes a 45° erect-image diagonal prism, daytime views are right-side-up and left-to-right correct—ideal for birdwatching, whale watching, or mountain overlooks.
Always start with the K25mm eyepiece (24× magnification) to locate your target easily in a wide field of view. Then switch to the K10mm eyepiece (60×) or add the 3× Barlow lens (72× to 180×+) for close-up planetary and lunar detail.
Yes. The entire telescope, stainless steel tripod, and accessories pack neatly into the included padded backpack (total weight 6.4 lbs).
You are covered by our full 30-day money-back guarantee from the day your telescope is delivered, giving you plenty of clear nights to test it in your own backyard.
Mark & Evan T.
★★★★★Saw Saturn’s rings within 15 minutes of opening the box
Bought this for my 11-year-old son and honestly I think I’m more obsessed with it than he is. We set it up on our back patio in Utah in maybe 4 minutes. Pointed at the Moon first—jaw-dropping craters—and then swung over to Saturn. Seeing the rings with your own eyes instead of a NASA photo is unforgettable.
Owned 4 weeks · Utah · verified buyer
Brian K.
★★★★★90mm glass makes a huge difference over 70mm scopes
Bright, sharp edge-to-edge, zero purple glare on the Moon. Worth every penny.
Owned 2 weeks · Arizona
Dr. Alan S.
★★★★★A real stainless steel tripod that doesn’t wobble in the breeze
My biggest complaint with sub-$300 telescopes is always the flimsy aluminum tripod that shakes every time your eyelashes touch the eyepiece. Cosari actually included a tubular stainless steel tripod. When you focus at 180× on Jupiter, the image settles immediately.
Owned 6 weeks · Colorado
Hannah R.
★★★★★My family group chat thought I faked my iPhone Moon photo!
The phone mount and little Bluetooth clicker are genius. I clipped my iPhone 16 Pro onto the 25mm eyepiece, tapped the Bluetooth button so my hands weren’t touching the scope, and got a crater photo so sharp my brother thought it was a wallpaper.
Owned 3 weeks · Texas
Leonard P.
★★★★★Doubles as a coastal spotting scope during the day
We keep it by our bay window overlooking Puget Sound. Watches ferries and bald eagles by day, stars by night.
Owned 1 month · Washington
Melissa & Dan W.
★★★★★Took it camping in Joshua Tree—the backpack fits everything
Everything packs into the padded travel bag in 2 minutes. Out under dark desert skies we saw the Orion Nebula, Andromeda, and four tiny pinpoint moons lined up right next to Jupiter. Best family camping gear we’ve ever bought.
Owned 5 weeks · California
Victor M.
★★★★★No mirror collimation headaches
I returned a 114mm reflector last month because collimating the mirrors took 40 minutes every time we drove anywhere. This 90mm refractor is grab-and-go perfection.
Owned 4 weeks · Oregon
Paul D.
★★★★★Tip: always align the finderscope in daylight first
Once you spend 2 minutes aligning the 5×24 crosshair finder on a distant treetop or chimney before sunset, finding planets at night takes 5 seconds. Optics are 10/10.
Owned 3 weeks · Ohio
carmen L.
★★★★★Ordered 2—one for us, one for our grandkids in Maine
The 2-pack discount saved us $60 total. Now my husband and our 9-year-old grandson FaceTime while looking at the exact same Moon craters from 1,200 miles apart.
Owned 6 weeks · Florida · bought 2
Jason B.
★★★★★Included Moon filter saves your night vision
A full Moon through a 90mm aperture is super bright! Screwing the included moon filter onto the bottom of the 25mm eyepiece cuts the glare and makes the crater shadows pop.
Owned 1 month · North Carolina
Trevor G.
★★★★★Smooth rack-and-pinion focuser
Zero backlash when dialing in focus on double stars. Feels like a $400+ instrument.
Owned 3 weeks · New Mexico
Natalie K.
★★★★★Got my kids off their iPads for two hours straight
Every clear evening my two teenagers actually come outside on the deck to track Jupiter’s moons changing position from night to night. Setup is completely frustration-free.
Owned 7 weeks · Virginia
Stephen H.
★★★★★Crisp cloud bands on Jupiter at 180×
Using the K10mm with the 3× Barlow on a calm night showed the two main equatorial belts on Jupiter clearly.
Owned 4 weeks · Montana
Diane F.
★★★★★Lightweight enough for me to carry with one hand
At 64 I didn’t want a 40-pound Dobsonian cannon. At 6.4 pounds assembled, I carry it out to the yard effortlessly.
Owned 3 weeks · Pennsylvania
Marcus Y.
★★★★★Fast shipping, double-boxed and foam-lined
Arrived in 2 days in pristine condition with every lens cap and a custom-fitted padded backpack.
Owned 2 weeks · Georgia
Kendra V.
★★★★★Best astronomy value of 2026
Compared this side by side with my neighbor’s $340 Celestron 90mm and the Cosari had a sturdier tripod and better phone mount for half the price.
Owned 2 months · Michigan