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If there’s one smart telescope that has captured the imagination of amateur astronomers, it’s the ZWO Seestar S50. 

Is that merely because it’s one of the most affordable? It’s certainly low priced, selling for a quarter of the price of Unistellar smart telescopes and a third of what Vaonis charge.  

Is it any good? It’s certainly different to other smart telescopes, weighing just 5.5lbs/2.5kg, but this 50mm/2 inch apochromatic telescope is only capable fo deep-sky imaging and has no inherent ability to capture planets or the moon. 

Full review to follow soon.

ZWO Seestar S50: price and availability

  • Originally on sale in 2023
  • On sale for US$499 / UK£539 / €680

ZWO Seestar S50: electronics and battery

  • Sony Exmor IMX462 CMOS sensor
  • 64GB hard disk
  • Built-in 6,000 mAh lithium-ion rechargeable battery (4 hours) 
telescope at astroshop

Seestar S50: mount and tripod

  • Motorized single-arm altazimuth GoTo
ZWO Seestar S50 smart telescope
Credit: ZWO

Seestar S50: optics

  • Apochromatic (APO) triplet telescope
  • 2-inch/50mm reflector
  • 250mm focal length
  • f/5 focal ratio

Seestar S50: field of view

  • 44 x 77 arcminutes 

Seestar S50: set-up and alignment

  • Carry case 
  • Electronic focuser
  • Dew heater
  • Filter wheel (optional narrowband dual-band filter and solar filter)
  • Optional tripod available for $105 

Seestar S50: control and app

  • Seestar app for smartphones

Seestar S50: image quality

  • 2 megapixels (1920 x 1080 pixels)

These images have been shared with us by Celestron: 

Seestar Z50: specifications

PriceUS$499 / UK£539 / €680
Optics50 mm (2-inch) Apochromatic triplet
Focal length250 mm, f/5
Field of view44 x 77 arcminutes
SensorSony Exmor IMX462
Image resolution1920 x 1080 pixels pixels, 2 megapixels
Image formatJPEG, TIFF, FITS
MountMotorized single arm, altaz, Go-To
BatteryBuilt-in lithium-ion rechargeable battery (4 hours) 
App controlSeestar app app for smartphones
Weight5.5 lbs / 2.5 kg
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