Solar Chromosphere in Hydrogen-Alpha Light
Monday, September 14th, 2026 at 6:31:13 PM · 2026/Astrophotography
This remarkable full-disk solar image captures the Sun's chromosphere in Hydrogen-alpha light at 656.3nm wavelength, taken with a Lunt LS60THa 60mm f/8.3 Ha telescope and ZWO ASI585MM monochrome camera on a Sky-Watcher EQ6 tracking mount. The image reveals extraordinary surface detail including dark, thread-like filaments — channels of cool, dense plasma suspended in the chromosphere — particularly prominent along the left (eastern) limb and lower hemisphere. Solar granulation is visible across the entire disk, while small sunspot groups can be identified in the lower-right quadrant, and active regions are traced by complex filament channels. The warm golden-amber color palette and reddish limb darkening are characteristic of H-alpha solar imaging, and the exceptional sharpness was achieved through a multi-exposure HDR ladder combined with lucky-imaging stacking and 2x drizzle processing to maximize resolution.
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