Old Dutch halo observations in Onweders, Optische verschijnselen
The Dutch weather amateurs journal Onweders, Optische verschijnselen, that was published between 1880-1961 contains plenty of observations of atmospheric optical phenomena. Two days ago I visited the Repository library in Kuopio to mark the relevant pages (mainly halos) from the publications for scanning. Pasi Juttula from the library scanned everything yesterday and I have put them here for download. Not all years are there, issues before 1896 are missing from the library collection as well as year 1933. Also I did not mark some of the last issues for scanning, because there seemed to be nothing interesting. Above is a selection of halo drawings from the journals, as well as photos from my visit to the library.