• DayStar Quantum H-Alpha 0.3 angstrom PE solar filter .3QPE ultra narrow hydrogen alpha filter ideal for serious and advanced astronomers providing a precise specialized and high performance ultra narrow 0.3 angstrom bandpass hydrogen alpha solar filter solution for capturing the sharpest and most detailed solar prominences solar filaments chromospheric features and fine solar surface detail in stunning high contrast hydrogen alpha light for advanced sun viewing and solar photography — Telescope Wolves
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Daystar

DayStar Quantum H-Alpha 0.3Å PE Solar Filter — Ultra-Narrow Passband for Maximum Solar Surface and Prominence Contrast

DayStar Quantum H-Alpha 0.3Å PE Solar Filter — Ultra-Narrow Passband for Maximum Solar Surface and Prominence Contrast

$35,990.00
$35,990.00
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The Quantum 0.3Å PE represents the absolute limit of what is achievable with an air-spaced Fabry-Pérot etalon at the amateur level. At this bandwidth, mottles, individual spicule columns, micro-filament threads, and chromospheric shock waves become visible with the right seeing — contrast approaching what you would expect from a tilt-tuned or pressure-scanned system costing an order of magnitude more. This filter is for observers with a dedicated solar telescope, exceptional seeing conditions, and a serious imaging rig. PE certification means your specific unit has been individually tested, measured, and documented for etalon homogeneity and on-band transmittance. Ships free to the US.

Specifications
Wavelength H-Alpha (656.3nm)
Filter Type Fabry-Pérot etalon (electrically heated for thermal stability, electronically tunable)
Grade PE — certified substrate homogeneity and on-band transmittance; individual unit documentation included
Bandpass (FWHM) 0.3Å at f/30 — maximum chromospheric contrast available in this class; mottles, spicule columns, micro-filaments, and chromospheric shock structures visible in excellent seeing
Optimal f/Ratio Best performance at f/30; dedicated solar telescope strongly recommended
Wavelength Display Live LCD readout, accurate to 0.1Å
Tuning Red/blue wing shift buttons; Doppler velocity mapping capable
Computer Control Serial port for on-screen wavelength display and automation
Power 12VDC (100–240VAC supply included with US, EU, UK, and AU adapters)
ERF Required Yes — front-mount Energy Rejection Filter required; sold separately
What's in the Box Quantum PE 0.3Å filter, certification documentation, 100–240VAC power supply with international adapters (US, EU, UK, AU)
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Frequently Asked Questions

With a beginner telescope you can see a surprising amount — the craters and mountains on the Moon, the rings of Saturn, the moons of Jupiter, and star clusters like the Pleiades. As you get more comfortable, you can also spot nebulae and distant galaxies. Not sure which beginner telescope is right for you? Check out our Telescope Buying Guide.
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All telescopes on Telescope Wolves are hand-picked with beginners in mind. If you're unsure which telescope is right for you, check out our Telescope Buying Guide.
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