The world’s biggest binoculars
you can buy
Early Access to Bloom
extended to September 14
With 8” mirrors, Bloom squeezes
56,000mm² of starlight into the 7mm pupils
in your eyes.
No pixels, just realtime jaw-dropping views
of the actual universe.
It’s a whole new way to experience the night sky
Discover so much more with both eyes open, including recent discoveries like interstellar medium and ghost planetary nebulae. See every deep space object in amazing detail and brightness in its full context in the sky.
2” eyepieces allow maximum brightness and widest fields with 7+mm exit pupils
56mm minimum eye distance (IPD) for 2” eyepieces - the same as 50mm handheld binoculars and a world record for binocular telescopes. Included 35mm/70 degree eyepiece kits are 56mm diameter.
Zoom in from 28x-333x using any 1.25” eyepieces regardless of focal point or undercut
49mm minimum IPD with modular 1.25” focusers. Range from 49mm to 85mm fits over 99.9% of faces.
Enhanced coating on secondary and tertiary mirrors for the brightest possible image
f/5 optics maintain sharp edges in wide views and perfect color when zoomed. No coma corrector is required.
Exploration Station
Bloom is thoughtfully designed by actual astronomy enthusiasts to provide an incredible user experience. The joy of binocular astronomy is unlocked when everything sits at your fingertips.
Magnetic 2” filter cartridges docked inches from their slots. Space for two filter sets.
Discover new objects by wandering the sky and PiFinder can tell you what you found.
Capacity for four sets of eyepieces always directly in front of you
Green laser pointer to quickly reposition Bloom, to point out an object to friends, or as a backup finder. Safe, 4 mW direct drive module
Star chart and push-to directions at a glance, inches from the eyepieces. Plate solving is accurate at any magnification.
Hand Controller for PiFinder and green laser pointer lets you control both while slewing and engaged at the eyepieces.
Perfect merging from zenith to horizon, from 28x to 300x
Design means nothing without precise alignment of both telescopes that lasts through the night.
Drawtube Gripfins Perfectly centered eyepieces
Easy Merging Knobs Perfectly merge imperfect eyes and eyepieces
Geared IPD rings Perfectly even bilateral adjustment of IPD
Stiff OTA Strong aluminum frame with custom clamps maintains alignment even with rough handling
The world’s first smart binoculars for astronomy
Integrated PiFinder Plate Solving computes position photographically, not through guesswork, with its IMX296 f/2 camera
Object identification: Wander the sky, discover something you’ve never seen before, and PiFinder will tell you what it is
Object catalogs: Messier, NGC, Barnard, IC, Sharpless, Arp, Caldwell, Collinder, Herschel 400, Named Stars, Planets, Abell and more
One-time alignment: Integrated design means alignment is maintained even when trusses are disassembled for travel
Dark site friendly: Dim the control pad and display to maintain dark adaption at the darkest sites
Open source software designed by actual visual astronomy enthusiasts for the best experience
Connect to Sky Safari via WIFI if you want a bigger screen
New PiFinder Features:
Larger 2” Screen (80% larger by area)
Larger 10-hour battery (twice the battery life)
Truss-mounted hand controller
4-way controller replaces arrow keys
Designed for Travel
All optical assemblies combine into one package measuring 22x14x9 inches (airline carry-on) with minimal disassembly
Send trusses, azimuth bearing, altitude trunnions, and included hardware case in checked luggage
The most light gathering you can put on an airplane
This design also makes Bloom an incredibly compact travel companion in a car, camper, or RV
Intelligent Material Choices
Black powder-coated Aluminum & stainless frame
All 304 Stainless Hardware
Strong, stress-tested, heat-tested PETG Components
Printable, Upgradable, Customizable
Print your own components
Download and print the latest updates
Use and contribute to community-generated accessories and remixes
Bloom is
Built by You
Like our other binocular telescope models, Bloom comes as a kit that you build with easy, step-by-step video instructions. Join astronomy’s greatest explorers when you become a telescope maker.
It’s an incredibly rewarding, customizable build.
Tech Specs
| Objective Mirrors | GSO, 1/4 wave P/V or better, 93% reflective coating. 196mm clear aperture. 1/10 wave mirror upgrade planned. Bring your own primary mirrors also an option. |
| Secondary/Tertiary Mirrors | Secondaries 1/10 wave P/V or better, enhanced (96+%) coating. Tertiaries 1/4 wave P/V or better, enhanced (96+%) coating. |
| Standard Focal Length | 1000mm (also configurable to 1200mm) |
| Image Orientation | Vertical flip |
| 2" Focuser IPD Range | 56-85mm (fits almost everyone) |
| 1.25" Focuser IPD Range | 49-85mm (fits over 99.9%) |
| Standard Dimensions (assembled OTA) | 590mm width x 900mm height x 530mm depth (23.25 x 35.5 x 21 inches) |
| Minimum Airline Dimensions | 540 x 352 x 200 mm (21.25 x 14 x 8 inches) |
| Weight | Total Weight TBD. Fully assembled OTA is 16.5 kg (36 lbs) |
| Zoom Range (f/5) | 28-333x (36mm to 3mm eyepieces) |
| Filters | Any standard 2" or 1.25" filter |
If you had eyes the size of Bloom, you’d be fifty-two meters tall.
