The spelling of the word "Unobscursd" may seem unusual, but it can be broken down phonetically as /ʌnəbˈskɜːrd/. The "un-" prefix means "not," while "obscured" means hidden or obstructed. The "-ed" suffix indicates past tense. Therefore, "Unobscursd" means something that has not been obstructed or hidden in the past. While the spelling may be unconventional, the phonetic sounds still follow English language rules.
Not darkened.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.