Daystar H-Alpha & CaK Filters

All-In-One Hydrogen-Alpha Solar Filter System Designed for Chromosphere (Solar Surface) Detail Integrated, H-Alpha Optimized Telecentric Barlow St...

Dual Switchable H-alpha Etalons: Instantly select a ≤0.5Å bandpass for chromosphere detail or a ≥0.6Å bandpass for bright prominences. Integrate...

Instantly Switchable Prominence & Chromosphere Views Contains Two Internal Fabry-Perot Etalon Filters Optimized for Telescopes from f/15 to f/...

Off-axis energy rejection filter (ERF) for Schmidt-Cassegrain Telescopes Safely isolates a smaller aperture for high-contrast solar viewing Availa...

Targets the 3968.5Å Calcium H-line Wavelength All-in-One Eyepiece-Style Solar Filter Optimized for F/7 to F/30 Refractor Telescopes Integrated 25m...

Hydrogen-Alpha Solar Filter for Chromosphere Viewing Optimized for Long Focal Ratio Telescopes (f/15+) All-in-One, Eyepiece-Sized Design Low-Power...

Choice of 0.7-0.9Å or 0.3-0.5Å Tunable Hydrogen-Alpha Bandpass SE (Standard Edition) Grade for Amateur and Academic Use Live LCD Wavelength Readou...

Full-aperture solar energy rejection filter for refractors Available in 80mm, 100mm, 130mm, and 150mm clear apertures Rejects harmful UV and IR ra...

Targets the Sodium D emission line at 5895.9Å Ultra-narrow 0.4Å bandpass for high-contrast views Professional Edition (PE) grade for research appl...

Observes in the rare Helium D3 line at 5875.61Å Ultra-narrow 0.3Å bandpass for maximizing contrast Professional Edition (PE) grade for research-le...

Targets the Calcium II K-line at 393.3nm 2Å Bandpass for high-contrast chromospheric detail PE (Professional Edition) Grade for research applicati...

Targets the Calcium II H-Line Emission Optimized for Visual and Imaging Use Reveals Lower Chromospheric Detail Produces a High-Contrast Violet Ima...

Bandpass options from 0.8Å down to 0.3Å for specific solar targets Live LCD readout of the precise wavelength output, accurate to 0.1Å Red/blue pu...

Observe the unique Magnesium I (Mg I) solar spectral line All-in-one design fits standard 1.25" diagonals Integrated 4.2X telecentric Barlow lens ...

Observes the Sodium D-Line at 5890 Å Bandpass of approximately 0.3-0.5 Angstroms Integrated 4.2X Telecentric Barlow Lens Designed for F/4 to F/9 R...

Transforms a Questar telescope into a Hydrogen-alpha solar telescope Prominence model optimized for high-contrast views of solar limb activity All...

All-In-One Hydrogen-Alpha Solar Filter Tuned for Chromosphere (Surface) Detail Designed Exclusively for Questar Telescopes USB-Powered for Field U...

Transforms Canon or Nikon SLR lenses into a Hydrogen-Alpha solar telescope Optimized for high-contrast views of solar prominences Internal Fabry-P...

Transforms Canon or Nikon SLR lenses into a Hydrogen-Alpha solar telescope Integrated, H-Alpha optimized telecentric Barlow lens USB-powered, heat...

Optimized for Solar Prominences Designed for Telescopes from f/15 to f/30 All-In-One, Eyepiece-Style Design Powered by Standard 5V USB Requires Of...

Hydrogen-Alpha Solar Filter (Prominence Model) Integrated 4.2X Telecentric Barlow Optimized for F/4 to F/9 Refractors Standard 1.25" Eyepiece Barr...