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This large superbly hand coloured original antique
celestial chart by Johann Gabriel
Doppelmayr was engraved in 1730 - the date is engraved
in the title - and was published by JB Homann in
Atlas Coelestis.
This is the sixth chart in a series of six depicting
part of the night sky on a gnomonic projection with 'the
fixed stars for the end of the year of Christ 1730
'according to the rules of arithmetic and geometry.'
The constellations are shown as figures according to
classical mythology and the zodiac as derived from
Hevelius. The more recently named constellations are
shown as scientific instruments. The paths of several
comets are traced following a pattern established by
Pardies.
Specifically this chart is an internal view of the sky
centred on the equator above the winter solstice in a
gnomonic projection between the declinations 45° North
and 45° South. Also depicted are the paths of the comets
C/1577 V1 (observed by Tycho Brahe), 1P/1607 S1 [Halley
s Comet] (Johannes Kepler), C/1661 C1 (Johannes Hevelius),
C/1680 V1 (John Flamsteed), C/1702 H1 (Philippe de la
Hire) and C/1707 W1 (Giovanni Domenico Cassini). The
comet of 1692 (observed by Philippe de la Hire) does not
seem to be mentioned in modern cometographies.
Doppelmayr wrote on astronomy, geography,
cartography, spherical trigonometry, sundials and
mathematical instruments. He often collaborated with the
cartographer Johann Baptista Homann (1664-1724), a
former Dominican monk from Oberkammlach in Schwabia who
in 1688 had settled in Nuremberg and became a map
engraver for the publishing firms of Jacob von Sandrart
and David Funck.
In 1702, Homann founded an influential cartographic
publishing firm that after his death was continued by
his son Johann Christoph Homann (1703-1730) and after
the latter s death by his friend Johann Michael Franz
(1700-1761) and his stepsister s husband Johann Georg
Ebersberger (1695-1760) under the name Homännische Erben
. The publishing firm remained in business under
different names until 1848. (Ref: Adelung, J.Chr.,
Johann Gabriel Doppelmayr ; Cantor, M., Johann Gabriel
Doppelmayr )
General Description:
Paper thickness and quality: - Heavy and stable
Paper color: - off white
Age of map color: - Original
Colors used: - Pink, yellow, green, blue
General color appearance: - Authentic
Paper size: - 24in x 20 ½in (620mm x 520mm)
Plate size: - 23 ½in x 19 ½in (600mm x 495mm)
Margins: - Min ½in (12mm)
Imperfections:
Margins: - None
Plate area: - None
Verso: - None
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