Microscope (constellation)
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Constellation microscope |
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| Latin name | Microscopium |
| Latin genitive | Microscopii |
| Abbreviation | Mic |
| Right ascension | 20 h 27 m 36 s to 21 h 28 m 10 s |
| declination | −45 ° 05 ′ 24 ″ to −27 ° 27 ′ 35 ″ |
| surface | 209,513 deg² rank 66 |
| Completely visible | 45.2 ° N to 90 ° S |
| Observation time for Central Europe | Summer (partially) |
| Number of stars brighter than 3 mag | 0 |
| Brightest star (size) | γ microscopii (4.67) |
| Meteor streams | |
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Neighboring constellations ( clockwise from north ) |
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| swell | IAU , |
 The Microscopium constellation as seen with the naked eye |
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The microscope ( Latin microscopium ) is a constellation of the southern sky.
description
The microscope is a completely inconspicuous constellation south of Capricorn . It contains 15 stars of 4th and 5th magnitude that are visible to the naked eye.
Only the northern part can be seen from Germany. To the south of the Karlsruhe - Regensburg line, the star θ1 rises above the southern horizon.
history
The constellation was introduced in the middle of the 18th century by the French astronomer Nicolas Louis de Lacaille , who often used technical devices for the names. It seems as if Lacaille inserted the constellation as a "gap filler" between Sagittarius (Sagittarius) and the crane (Grus).
Celestial objects
Stars
| B. | F. | Names or other designations | size | Lj | Spectral class |
|---|---|---|---|---|---|
| γ | 4.67 m | 224 | G8 III | ||
| ε | 4.71 m | 165 | A0 V | ||
| θ 1 | 4.80 m | 187 | A2p | ||
| α | 4.89 m | 381 | G8 III | ||
| ι | 5.11 m | 134 | F1 IV | ||
| ν | 5.12 m | 216 | K0 III | ||
| HR 8076 | 5.20 m | 354 | K2 III | ||
| HR 8104 | 5.25 m | 109 | F5 V | ||
| ζ | 5.32 m | 115 | F3 V | ||
| HR 7987 | 5.34 m | 412 | K2 III | ||
| HR 8110 | 5.41 m | 392 | K3 III | ||
| HR 7893 | 5.47 m | 239 | K1 III | ||
| HR 7933 | 5.48 m | 320 | B8 + B9V | ||
| HR 8202 | 5.50 m | 176 | At the | ||
| δ | 5.69 m | ||||
| θ 2 | 5.76 m | ||||
| β | 6.06 m | ||||
| AU Microscopii | 8.8 m | 33 | M1Ve |
γ Microscopii is a yellow shining star of the spectral class G8 III, 224 light-years away, with 10 times the diameter of our sun .
Variable stars
| star | size | Type | |
|---|---|---|---|
| AU | 8.8 m | Eruptively changeable |
AU Microscopii is a red dwarf star only 33 light years away. Due to its low brightness of only 8.8 m , you need at least prism binoculars to observe it . The star sometimes shows bursts of brightness. Investigations have shown that it is surrounded by a debris disk .
