This page gathers various maps of the celestial sphere with primary focus on the constellation boundaries. Background information about constellation boundaries is available here.

Reproductions of the maps from Delporte's book

The maps in this series attempt to reproduce those included in Eugène Delporte's book Délimitation Scientifique des Constellations as faithfully as practical.

The two maps below reproduce the large maps of the northern and southern hemispheres that conclude Delporte's book. They specify the coordinates of the constellation boundaries. They use azimuthal equidistant projections on tangent planes at the poles.

Northern Hemisphere
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Southern Hemisphere
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Delporte Constellation Boundaries - Northern Hemisphere Delporte Constellation Boundaries - Southern Hemisphere

The following twenty-six maps cover the celestial sphere. Felice Stoppa's site has images of the originals, see this example. I have used the stereographic projection onto the tangent plane to the celestial sphere at the center of the map from the opposite point. All the maps are drawn at the same scale, unlike the book's, where the ones centered at latitude ±50° appear to use a different scale from the ones centered at ±10° (and even different scale factors along x and y). The equatorial coordinate system corresponds to the equinox of B1875.0. The star set is based mainly on the Bright Star Catalogue, 5th Revised Ed., with the coordinates precessed back to B1875.0.

1N
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2N
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3N
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4N
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5N
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6N
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7N
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1N 2N 3N 4N 5N 6N 7N
8N
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9N
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10N
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11N
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12N
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13N
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8N 9N 10N 11N 12N 13N
1S
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2S
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3S
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4S
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5S
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6S
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7S
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1S 2S 3S 4S 5S 6S 7S
8S
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9S
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10S
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11S
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12S
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13S
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8S 9S 10S 11S 12S 13S

Color maps

These maps provide views of the celestial sphere in the six directions of the cartesian axes of the equatorial coordinate system.

North view
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South view
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Aries view
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Capricorn view
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Libra view
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Cancer view
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North South Aries Capricorn Libra Cancer

Acknowledgments.

  • This research has made use of the VizieR catalogue access tool, CDS, Strasbourg, France. The original description of the VizieR service was published in A&AS 143, 23.
  • This research has made use of the SIMBAD database, operated at CDS, Strasbourg, France.