Title:

Low-Resolution Stellar Spectroscopy at the UNH Observatory: ​ Resolving Absorption Features Across the OBAFGKM Sequence

This study explores the capability of the UNH Observatory’s 14” Schmidt-Casegrain telescope to resolve stellar absorption features across the OBAFGKM spectral sequence. Low-resolution spectra were obtained with the Star Analyzer 100 and a DSLR camera, using RSpec; absorption features were resolved and compared with published spectral atlases. Prominent features detected include Balmer hydrogen lines, neutral helium, neutral iron, neutral magnesium, and TiO molecular bands. However, instrumental limitations and detector artifacts restricted the resolution of faint spectral lines. These results demonstrate that low-resolution spectroscopy can recover some of the dominant spectral characteristics in the visible regime of stars' electromagnetic spectra.

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