Celestial hemisphere:  Northern  ·  Constellation: Cepheus (Cep)  ·  Contains:  NGC 188
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NGC 188 (C1) - Polarissima Cluster in Cepheus, Harold Freckhaus
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NGC 188 (C1) - Polarissima Cluster in Cepheus

Getting plate-solving status, please wait...
NGC 188 (C1) - Polarissima Cluster in Cepheus, Harold Freckhaus
Powered byPixInsight

NGC 188 (C1) - Polarissima Cluster in Cepheus

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Description

Essais de la TSQ 80 APO avec un doubleur de focale CANON EF2X III (focale résultante de 1100mm environ). Mise au point manuelle. Début de la séance photo juste à la fin de la nuit.

NGC 188 (Caldwell 1) est un amas ouvert situé dans la constellation de Céphée. Il a été découvert par l'astronome britannique John Herschel en 18315.

NGC 188 est à environ 2 047 pc (∼6 680 a.l.) du système solaire et, selon la base de données WEBDA, les dernières estimations lui donnent un âge de 4,3 milliards d'années, ce qui en fait le plus vieil amas ouvert connu. La taille apparente de l'amas est de 25 minutes d'arc, ce qui, compte tenu de la distance, donne une taille réelle maximale d'environ 22 années-lumière.

Source Wikipedia.fr

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Tests with a CANON EF2X III focal length doubler and a TSQ 80 APO. Resulting focal length is approximately 1100mm. Manual focus. Photo shoots started just at the end of the night.

NGC 188 (also known as Caldwell 1) is an open cluster in the constellation Cepheus. It was discovered by John Herschel in 1825. Unlike most open clusters that drift apart after a few million years because of the gravitational interaction of our Milky Way galaxy, NGC 188 lies far above the plane of the galaxy and is one of the most ancient of open clusters known, at approximately 6.8 billion years old. NGC 188 is very close to the North Celestial Pole, under five degrees away, and in the constellation of Cepheus at an estimated 5,000 light-years' distance, this puts it slightly above the Milky Way's disc and further from the center of the galaxy than the Sun.

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Revisions

  • NGC 188 (C1) - Polarissima Cluster in Cepheus, Harold Freckhaus
    Original
  • NGC 188 (C1) - Polarissima Cluster in Cepheus, Harold Freckhaus
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  • NGC 188 (C1) - Polarissima Cluster in Cepheus, Harold Freckhaus
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  • NGC 188 (C1) - Polarissima Cluster in Cepheus, Harold Freckhaus
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  • Final
    NGC 188 (C1) - Polarissima Cluster in Cepheus, Harold Freckhaus
    M

B

Description: Reduced view

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D

Description: Enlarged wide field

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L

Description: Noise reduction - C1 centered

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M

Description: Background more dark and C1 centered

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NGC 188 (C1) - Polarissima Cluster in Cepheus, Harold Freckhaus