BRIXIIS Astronomical Observatory

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Contact Form Spectra  theta Corona Borealis - HD 138749 - 20 apr. 2019

Spectra HD138749 - tet CBR - H-alpha detail


Telescope: 0.28 f/10 (C11 Cassegrain)

Spectroscope: LHiResIII with 2400 l/mm grating

Calibration with internal Ar/ne

Calibration RMS: 0.061 A

Resolving Power: 12875

Exposure: 3 x 600s