Helligkeitsschätzungen von (7) Iris
✍
E. Jost
📂
Article
📅
1903
🏛
John Wiley and Sons
🌐
English
⚖ 99 KB
👁 1 views
with the comparison stars used in Tables and, so that all may be reduced to one system. Measures of the absolute magnitudes of these stars will be undertaken here. It will be noticed that observations on each night should ex-tend over a t least three hours. In that case, a maximum and minimum will