12 citations · 17 across the 2 of their papers we have counts for
2 papers
astro-ph.IM2020★ 5 cited
Accuracy of magnitudes in pre-telescopic star catalogues
Philipp Protte, Susanne M Hoffmann
Historical star magnitudes from catalogues by Ptolemy (137 AD), as-Sufi (964) and Tycho Brahe (1602/27) are converted to the Johnson V-mag scale and compared to modern day values f…
astro-ph.IM2019★ 12 cited
A new approach to generate a catalogue of potential historical novae
Susanne M Hoffmann, Nikolaus Vogt, Philipp Protte
Ancient Chinese, Korean and Vietnamese observers left us records of celestial sightings, the so-called `guest stars' dated up to years ago. Their identification with mod…