| 词条 | De systemate orbis cometici, deque admirandis coeli characteribus |
| 释义 |
ScopeThe first part of his work (De systemate orbis cometici) followed Galileo's ideas on comets.[1][2] The second part (De admirandis coeli characteribus) consisted of four main sections. The first concerns the classification of nebulaes. Hodierna classified the objects into three types according to their resolvability. Luminosae, or star clusters to the naked eye, Nebulae, or clusters that appeared nebulous to the naked eye, but which were resolvable in his telescope, and Occultae, which did not resolve even with the aid of his telescope.[1][2] The second part is a list of 40 nebulae, of which roughly 25 have been identified as known objects, the others having too unclear a description for a modern identification.[1] The third section is an attempt at a unifying theory of celestial objects, and the fourth concerns Copernican heliocentrism.[2] DiscoveriesHodernia is credited with several first descriptions, discoveries and rediscoveries:[1][3] {{Columns|col1=
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}} These discoveries were part of an attempt at compiling a sky atlas, Il Cielo Stellato Diviso in 100 Mappe, but the work was never completed.[1] References1. ^1 2 3 4 5 6 7 {{cite web |last1=Frommert |first1=H. |last2=Kronberg |first2=C. |date=14 May 2012 |title=Giovanni Battista Hodierna (April 13, 1597 – April 6, 1660) |url=http://messier.seds.org/xtra/Bios/hodierna.html |publisher=SEDS |accessdate=2015-07-31}} 2. ^1 2 3 4 {{cite journal |last1=Fodera-Serio |first1=G. |last2=Indorato |first2=L. |last3=Nastasi |first3=P. |year=1985 |title=G.B. Hodierna's Observations of Nebulae and his Cosmology |journal=Journal for the History of Astronomy |volume=16 |issue= |pages=1 |bibcode=1985JHA....16....1F |doi=}} 3. ^{{cite web |last1=Frommert |first1=H. |last2=Kronberg |first2=C. |date=25 August 2007 |title=Hodierna's Deep Sky Observations |url=http://messier.seds.org/xtra/similar/hodierna.html |publisher=SEDS |accessdate=2015-08-11}} Further reading
|last=Hodierna |first=G. B. |year=1654 |title=De systemate orbis cometici, deque admirandis coeli characteribus |url=https://archive.org/details/bub_gb_5x9xAgml4jYC |language=Latin |bibcode=1654dsoc.book.....H |doi=10.3931/e-rara-444 }}
|last1=Fodera-Serio |first1=G. |last2=Indorato |first2=L. |last3=Nastasi |first3=P. |year=1985 |title=G.B. Hodierna's Observations of Nebulae and his Cosmology |journal=Journal for the History of Astronomy |volume=16 |issue= |pages=1 |bibcode=1985JHA....16....1F |doi= }}
|last1=Jones |first1=K.G. |year=1986 |title=Some Notes on Hodierna's Nebulae |journal=Journal for the History of Astronomy |volume=17 |issue= |pages=187 |bibcode=1986JHA....17..187J |doi=10.1177/002182868601700303 }}
|last1=Frommert |first1=H. |last2=Kronberg |first2=C. |date=25 August 2007 |title=Hodierna's Deep Sky Observations |url=http://messier.seds.org/xtra/similar/hodierna.html |publisher=SEDS }}
|last1=Frommert |first1=H. |last2=Kronberg |first2=C. |date=14 May 2012 |title=Giovanni Battista Hodierna (April 13, 1597 – April 6, 1660) |url=http://messier.seds.org/xtra/Bios/hodierna.html |publisher=SEDS }} 3 : 17th-century Latin books|1654 books|Astronomical catalogues |
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