Celestial hemisphere:  Northern  ·  Constellation: Taurus (Tau)  ·  Contains:  Crab nebula  ·  HD245010  ·  LBN 833  ·  M 1  ·  NGC 1952  ·  Sh2-244
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M 1  The Crab Nebula, Roland Schliessus
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M 1 The Crab Nebula

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M 1  The Crab Nebula, Roland Schliessus
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M 1 The Crab Nebula

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Description

The Crab Nebula (cataloged as M 1 and NGC 1952) in the constellation Taurus is the remnant of the supernova observed in 1054, in which a pulsar wind nebula has formed. It is located in the Perseus Arm of the Milky Way and is about 2000 parsecs from Earth.

Expanding at nearly 1,500 kilometers per second, the nebula is oval in shape, 6 arc minutes long and 4 arc minutes wide. At its center is the neutron star that emerged from the exploded star of origin, which rotates around its axis about 30 times per second (33 ms period) and forms a pulsar in the radio frequency range as well as in the optical, X-ray and gamma frequency range (so-called cancer or Crabpulsar) is detectable. The surrounding nebula is laced with filaments formed from the parent star's outer shells, composed mostly of ionized hydrogen and helium. There are also smaller amounts of carbon, oxygen, nitrogen, iron, neon and sulphur, sometimes in the form of dust.

Because of its low apparent brightness, the Crab Nebula can only be observed through telescopes and was only discovered with their systematic use in the 18th century. Due to its proximity and as one of the youngest galactic pulsar wind nebulae, it has since become one of the most intensively researched objects in astronomy.

========================= Source: Wikipedia ======================

Teleskop Oder Objektiv (Aufnahme)
    MEADE LX90
Aufnahmekamera
    Moravian G2-8300
Montierung
    iOptron CEM60-EC on concrete pier
Filter
    Baader S2 1.25" 8nm · Baader Ha 1.25" 7nm · Baader O3 1.25" 8.5nm · Baader B 1.25" · Baader G 1.25" · Baader R 1.25"
Zubehör
    Starizona Flattener/Reducer 0.63
Software
    Adobe Photoshop · Open PHD Guiding Project PHD2 · Pleiades Astrophoto PixInsight · Sequence Generator Pro · DeepSkyStacker (DSS) 4..1.1
Teleskop Oder Objektiv (Nachführung)
    Moravian OAG
Nachführkamera
    Starlight Xpress Lodestar X2


Datum:
    16. September 2019 ·  20. September 2019 ·  29. Dezember 2019 ·  30. Dezember 2019
Frames:
    Baader B 1.25": 6×60″(6′) -20°C bin 1×1
    Baader G 1.25": 6×60″(6′) -20°C bin 1×1
    Baader Ha 1.25" 7nm: 10×1200″(3h 20′) -20°C bin 1×1
    Baader O3 1.25" 8.5nm: 13×1200″(4h 20′) -20°C bin 1×1
    Baader R 1.25": 6×60″(6′) -20°C bin 1×1
    Baader S2 1.25" 8nm: 13×1200″(4h 20′) -20°C bin 1×1
Aufnahmedauer:
    12h 18′
Darks:
    50
Flats:
    50
Bias:
    50
Durchschnittliches Mondalter:
    11.17 Tage
Durchschnittliche Mondphase:
    47.61%
Bortle Skala:
    4.00

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