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Spectra  10 Cas - HD 144 - mag.: 5.57 - H-alpha detail

Telescope: 0.28 f/10 (C11 Cassegrain)

Spectroscope: L200 with 1800 l/mm grating

Calibration with internal Ar/ne

Calibration RMS: 0.002 A

Resolving Power: 10365

Exposure: 5 x 600s