25–31 August 2026 – we are accepting pre-orders at the promotional price.
1–14 September 2026 – we begin shipping orders; the promotional price remains valid.
From 15 September 2026 – sales begin at the regular price according to the manufacturer’s price list
ZWO Seestar S50 Pro is an advanced all-in-one smart telescope combining a 50 mm four-element APO optical system, two 4K cameras, an automatic mount, focusing system, control computer, integrated filter system, 128 GB storage and a 10,000 mAh battery. The entire system is controlled through a mobile application responsible for object selection, GoTo positioning, tracking, image capture, stacking and processing.
The most important change compared with the original Seestar S50 is the dual imaging system. The main telephoto camera uses an 8.3 MP, 1/1.2" sensor, while the second wide-angle camera is equipped with an 8.3 MP, 1/2" sensor. Both cameras record 4K images at a resolution of 2160 × 3840 pixels.
The telephoto optical system has a 50 mm aperture, 260 mm focal length and f/5.2 focal ratio. Its four-element apochromatic objective with ED glass is designed to reduce chromatic aberration and produce pinpoint star images. The 2.8° field of view makes it possible to capture galaxies, nebulae, star clusters and smaller areas of the Milky Way with clearly visible detail.
The wide-angle camera offers a 63° field of view, 6 mm focal length, f/1.75 focal ratio and a 35 mm equivalent focal length. It can be used to capture wide views of the Milky Way, galactic arches, constellations, star trails and night landscapes. It can also be used during the day for nature, landscape and fast-moving-object photography.
The integrated filter system includes a UV/IR-cut filter for both cameras, a dual-band light-pollution filter for the telephoto camera and a calibration position for recording dark frames. The dual-band filter passes the OIII band with a width of 30 nm and the H-alpha band with a width of 20 nm, improving the contrast of emission nebulae when imaging from urban and suburban locations.
The Seestar S50 Pro automates the entire imaging session. Once an object has been selected, the telescope can orient itself under the sky, determine the target position, focus, begin tracking and stack successive exposures. The application's extensive database contains more than 80,000 deep-sky objects and more than 600,000 stars. Constellation recognition, target recommendations and observation-planning functions are also available.
Plan Mode makes it possible to prepare an entire night's schedule covering several objects and different types of images. The user can create the plan manually or use automatic planning. The telescope completes each item of the schedule within the appropriate time window, reducing the need to supervise the session continuously.
The Seestar application provides live image stacking, automatic mosaics and intelligent one-tap processing. Manual adjustment is also available, including star reduction or removal, cropping, brightness, contrast, noise reduction and color saturation. Processing adjustments can be synchronized with the image preview so that their results are visible directly in the application.
The integrated mount can operate in alt-azimuth mode, while the telescope also supports equatorial mode. Equatorial mode can provide more accurate tracking during longer sessions, but it requires the telescope to be positioned correctly and used with a suitable equatorial base or wedge. An equatorial wedge is not listed as part of the standard package.
According to the manufacturer's laboratory measurements, the 10,000 mAh battery provides up to 9 hours of operation. The eMMC storage has a capacity of 128 GB, with approximately 100 GB remaining available for photographs and recordings after space occupied by the system is taken into account. 2.4 and 5 GHz Wi-Fi, Bluetooth and USB Type-C allow the telescope to be controlled, files to be transferred and external power to be supplied during longer sessions.
• all-in-one smart telescope controlled through a mobile application
• dual imaging system: telephoto camera and wide-angle camera
• two 8.3 MP sensors
• 4K image resolution: 2160 × 3840 pixels
• four-element apochromatic objective with ED glass
• 50 mm main objective aperture
• 260 mm focal length and f/5.2 focal ratio
• 6 mm f/1.75 wide-angle camera with a 63° field of view
• automatic object search, GoTo positioning, focusing and tracking
• automatic live image stacking
• mosaic imaging function
• all-night session planning mode
• alt-azimuth operation and equatorial-mode support
• deep-sky, Milky Way and star-trail photography
• solar and lunar photography
• daytime landscape and nature photography
• intelligent one-tap image processing
• manual tools for advanced image adjustment
• database of more than 80,000 deep-sky objects and more than 600,000 stars
• constellation recognition and target-selection assistance
• integrated UV/IR-cut, dual-band and dark-frame filter system
• 128 GB eMMC storage
• 10,000 mAh battery providing up to 9 hours of operation
• 2.4/5 GHz Wi-Fi, Bluetooth and USB Type-C
• JPEG, FITS, MP4 and AVI file support
• mechanical mount home position
• NFC function
• new upgraded tripod included
The telephoto camera is intended for imaging astronomical objects that require a larger image scale. Its 1/1.2" sensor with 2.9 µm pixels works with a 50 mm aperture, 260 mm focal-length objective. The equivalent focal length is 880 mm, while the minimum focusing distance is 15 m.
The wide-angle camera uses a 1/2" sensor with 1.6 µm pixels. Its 6 mm f/1.75 lens provides a 63° field of view and a 35 mm equivalent focal length. It can focus from a distance of only 0.1 m, making the camera suitable for daytime photography and compositions with a clearly defined foreground.
Telephoto camera:
• sensor: 1/1.2", 8.3 MP
• pixel size: 2.9 µm
• resolution: 2160 × 3840 pixels
• aperture: 50 mm
• focal length: 260 mm
• focal ratio: f/5.2
• equivalent focal length: 880 mm
• field of view: 2.8° in portrait orientation
• focusing range: 15 m to infinity
Wide-angle camera:
• sensor: 1/2", 8.3 MP
• pixel size: 1.6 µm
• resolution: 2160 × 3840 pixels
• lens aperture: 3.4 mm
• focal length: 6 mm
• focal ratio: f/1.75
• equivalent focal length: 35 mm
• field of view: 63° in portrait orientation
• focusing range: 0.1 m to infinity
The main objective consists of four optical elements and includes low-dispersion ED glass. The apochromatic design reduces colored fringes around bright stars and improves image sharpness across the usable field of view.
• four-element apochromatic objective with ED glass
• UV/IR-cut filter for the telephoto and wide-angle cameras
• dual-band filter for the telephoto camera
• dual-band OIII bandwidth: 30 nm
• dual-band H-alpha bandwidth: 20 nm
• integrated dark-frame position for the telephoto camera
• external magnetic solar filter included
• automatic orientation and sky-position recognition
• object search and automatic GoTo positioning
• automatic focusing
• automatic tracking of the apparent movement of the sky
• live stacking of successive exposures
• observation planning for one or more objects
• manual and automatic session-plan creation
• automatic mosaic imaging
• constellation recognition
• catalogue of more than 80,000 deep-sky objects
• catalogue of more than 600,000 stars
• recommendations of suitable objects for the current night
• publishing and sharing results within the Seestar community
One-Tap Smart Enhancement automatically analyzes the captured material and improves its visibility. More advanced users can then fine-tune the result manually using a set of tools available directly in the application.
• automatic One-Tap Smart Enhancement processing
• advanced manual image adjustment
• real-time synchronization of adjustments with the preview
• reduction of the number and intensity of stars
• star removal
• image cropping
• brightness adjustment
• contrast adjustment
• noise reduction
• color-saturation adjustment
• photography of galaxies, nebulae and star clusters
• wide-angle Milky Way photography
• Milky Way arch imaging
• star-trail photography
• mosaics of large objects and areas of the sky
• photography of the Sun, sunspots and solar eclipses
• photography of the Moon and lunar eclipses
• landscape and nature photography
• birdwatching and bird photography
• intelligent tracking of moving objects
• alt-azimuth mode
• supported equatorial mode
• 8.3 MP telephoto camera sensor instead of 2 MP
• additional 8.3 MP wide-angle camera
• 4K imaging through both optical systems
• four-element APO objective instead of a three-element design
• focal length increased from 250 to 260 mm
• support for Milky Way and star-trail photography
• 10,000 mAh battery instead of 6000 mAh
• declared operating time of up to 9 hours instead of 6 hours
• 128 GB storage instead of 64 GB
• NFC support
• equatorial-mode support
• telephoto focusing from 15 m instead of 30 m
• ZWO Seestar S50 Pro smart telescope
• upgraded tripod
• protective carrying case
• magnetic solar filter
• USB Type-C cable
• safety instructions
• quick-start guide
• astronomy-themed sticker set
Model:
• name: Seestar S50 Pro
Optical system:
• main objective design: four-element apochromat with ED glass
• telephoto aperture: 50 mm
• telephoto focal length: 260 mm
• telephoto focal ratio: f/5.2
• wide-angle camera aperture: 3.4 mm
• wide-angle camera focal length: 6 mm
• wide-angle camera focal ratio: f/1.75
Sensors and imaging:
• telephoto camera sensor: 1/1.2", 2.9 µm, 8.3 MP
• wide-angle camera sensor: 1/2", 1.6 µm, 8.3 MP
• telephoto camera resolution: 2160 × 3840 pixels
• wide-angle camera resolution: 2160 × 3840 pixels
• telephoto camera field of view: 2.8° in portrait orientation
• wide-angle camera field of view: 63° in portrait orientation
• image formats: JPEG / FITS
• video formats: MP4 / AVI
Filters:
• UV/IR-cut: telephoto and wide-angle cameras
• dual-band filter: telephoto camera
• OIII bandwidth: 30 nm
• H-alpha bandwidth: 20 nm
• dark-frame position: telephoto camera
• external solar filter: magnetic, included
Storage and power:
• internal storage: 128 GB eMMC
• user-available storage: approximately 100 GB
• battery capacity: 10,000 mAh
• declared operating time: up to 9 hours
• power input: USB Type-C
• supported power supply: DC 5 V / 3 A and 12 V / 3 A
Connectivity:
• Wi-Fi: 2.4 GHz and 5 GHz
• declared Wi-Fi range: up to 10 m
• Bluetooth: yes
• declared Bluetooth range: up to 5 m
• NFC: yes
• USB Type-C: yes
• hardware Wi-Fi reset: supported
Mount:
• standard operating mode: alt-azimuth
• equatorial mode: supported
• slew rate: 1× to 1440×
• home position: mechanical
• base thread: 3/8"-16
Operating conditions:
• operating temperature: -10°C to 40°C
• charging temperature: 0°C to 40°C
• storage temperature: -10°C to 60°C
• operating humidity: 20–80%
• storage humidity: 20–50%
Dimensions and weight:
• folded dimensions: 140 × 149 × 268 mm
• main-unit weight: 2.8 kg
Always use the included, undamaged solar filter when observing the Sun and install it in accordance with the manufacturer's instructions. Check that the filter is seated correctly before pointing the telescope at the Sun. Never observe or photograph the Sun without a suitable solar filter.
The stated operating time, wireless range and available storage capacity are manufacturer-declared values and may vary depending on temperature, settings, usage, radio conditions and software version. The availability of individual application functions may depend on the currently installed application version.
