De Admirandis Coeli Characteribus

Opusculi Distinctio Ut ea qua nobis explicanda proponentur, brevi methodo assequamur, hoc nostrum, de Coeli caracteribus admirandis, Opusculum, in quatuor sectiones distinguimus. In quarum Prima nobis praemeditandum proponimus, in quibus Notis nam Stellae Nebulosae ab Occultis, veletiam à Luminosis differant, ut singlulae species internoscantur. In secunda sectione disquirendum sit, quotnam huiusmodi sint in coelo eminentissimo […]

The Hodierna’s Nebulae

A Messier’s forerunner to the court of the early “Gattopardo” In 1654, when Palermo was given to the press the treatise “De Systemate Orbis Cometici, Deque Admirandis Coeli Characteribus” Giovan Battista Hodierna, the real nebulae known you could count barely on the fingers of two hands: it was known since the ancient times, the double […]

De Admirandis Coeli Characteribus

SECTIO PRIMA In qua Differentiae Nota venit indicanda, qua Stellae Nebulosae à Stellis Occultis, et à Luminosis dissideant, atque proinde uniuscuisque Differentiae Diffinitio tradenda venit. Nebulosae Stellae ab Astronomis consuevisse videntur, angusti quidam Coeli Tractus, quos, etiam sub Aethere desaecatissimo, veluti Nebulosos Nodos, vel Globos suboscuros cerneres: sed in eodem Coeli situ, et indelebiliter perseverantes: […]