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Spectra HD 5394 - gam Cas - detail HeI @ 6678 Å

Telescope: 0.28 f/10 (C11 Cassegrain)

Spectroscope: LHiResIII 2400 l/mm grating

Calibration with internal Ar/ne

Calibration RMS: 0.069 A

Resolving Power: 14852 - slit 32µm

Exposure: 17 x 600s