Construct · 1 fields · 2 citations

gegenschein: a standalone construct

One name. One construct. A landmark on the map.

● anchor · one construct: the counterglow Nearest construct by meaning·not indexed
gegenschein1 CONSTRUCTGegenscheinBARNARD · COUNTERGLOW

A single standalone construct; nearby constructs are located against it in the Collider. Tap a field for its definition, unit, and measures.

Astronomy

The faint counterglow of zodiacal light at the antisolar point.

The gegenschein (German, 'counter-shine') is a very faint, roughly oval brightening of the night sky at the antisolar point, caused by sunlight backscattered from interplanetary dust at near-zero phase angle; it is the antisolar enhancement of the zodiacal light, carefully observed and described by E. E. Barnard and later treated in Roach and Gordon's The Light of the Night Sky. It is a single, well-defined phenomenon of the inner solar system's dust, an anchor rather than a cross-field collision.[1][2]

Unit
One counterglow, measured in surface brightness (S10 units) at the antisolar point.
Recovery means
Look toward the antisolar point on a dark, moonless night far from the Milky Way.
Measured by
Wide-field photometry of night-sky surface brightness.

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Nearby constructs

collision3 fields · 7 citationsjingle · one word, three constructsphase5 fields · 6 citationsjingle · one word, five constructs

References

  1. Barnard, E. E. (1897). The gegenschein or zodiacal counterglow. The Astronomical Journal, 17, 151. https://doi.org/10.1086/102702
  2. Roach, F. E., & Gordon, J. L. (1973). The zodiacal light and gegenschein. In The Light of the Night Sky (pp. 37-46). Springer. https://doi.org/10.1007/978-94-010-2553-9_3

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