More products from the brand :Sky-Watcher

Acuter 40 H-alpha sunglass

CHF 999

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Acuter Elite Phoenix 40 - The versatile and innovative H-alpha solar telescope

Visit Acuter Elite Phoenix 40 is a new-generation solar telescope designed to observe our star in stunning detail. Thanks to a 40 mm H-alpha standard at the front and an integrated blocking filter, it reveals the Sun's most dynamic structures: protuberances, filaments, flares and active patches appear in high definition in intense red light, filtered around 656 nm. With a bandwidth of less than 0.6 Ångström, this telescope rivals much more expensive instruments.

But the Phoenix 40 doesn't stop there: with just a few flicks of the wrist, it can also become a classic 80 mm f/5 refractor for deep-sky and planetary observation. This rare versatility makes it the ideal two-in-one instrument for curious astronomers, educators or experienced amateurs.

Main technical data

Specification Detail
Opening in solar mode 40 mm (H-alpha)
Opening in visual mode 80 mm (achromatic refractor)
Focal length 400 mm
F/D ratio f/10 (solar), f/5 (visual)
H-alpha spectral range < 0.6 Å
Standard setting By pressure (fine tuning)
Blocking filter 8 mm integrated into the solar angle drive
Focuser 1.25″ rotating crayford - 360° locking
Supplied eyepiece Zoom 5-16 mm (magnifications 25× to 80×)
Recommended frame Sky-Watcher SolarQuest (Solar Go-To)
Smartphone holder Included (universal for H-alpha photo)
Mounting 45 mm dovetail bar with 1/4-20 pitch
Tube weight 2 kg
Tube length 412 mm
Safety compliance ISO 12312-2:2015
Carrying case Includes aluminum with foam cut-out

Two instruments in one: solar and celestial

The Phoenix 40 is one of the few telescopes capable of transformation. By simply removing the standard and the solar bent reflector, then installing the classic diagonal mirror supplied, it becomes a true refractor 80/400. Ideal for nebulae, open clusters, the Moon or Jupiter, it can be used with standard 1.25″ eyepieces and can accommodate short CCD or CMOS cameras (55 mm backfocus or less).

Sun observation in complete safety

Thanks to its ISO-compliant design, integrated solar finder and blocking filter, the Phoenix 40 guarantees maximum safety during H-alpha observations. However, it is crucial to always use the telescope with the original components supplied (in particular, the solar bent reflector) and never to point it at the Sun without these protections.

For solar photo enthusiasts

Supplied with a universal smartphone adapter, it makes it easy to capture spectacular images of the solar chromosphere. It is also compatible with 1.25″ astronomical cameras for professional results. Generous backfocusing makes it easy to focus, even with more complex systems including Barlow or filter wheel.

Conclusion

Visit Acuter Elite Phoenix 40 is much more than a solar telescope: it's an evolutionary, compact and affordable observation platform. High-performance in H-alpha, versatile in night mode, it is a unique solution for exploring the Sun... and the stars. An ideal instrument for schools, astronomy clubs, curious enthusiasts and lovers of beautiful images.

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