{"id":7013,"date":"2016-11-04T10:10:28","date_gmt":"2016-11-04T09:10:28","guid":{"rendered":"http:\/\/outters.fr\/?p=7013"},"modified":"2025-07-15T17:04:11","modified_gmt":"2025-07-15T16:04:11","slug":"sh2-155-hoo-rvb","status":"publish","type":"post","link":"https:\/\/www.outters.fr\/?p=7013","title":{"rendered":"Sh2-155 HOO-rvb"},"content":{"rendered":"

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Sh2-155 HOO rvb
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Commentaires sur l’objet photographi\u00e9<\/span><\/p><\/h1><\/span>

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\"outters-nicolas\"<\/p>\n<\/div>

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Image HOO-rgb<\/h2><\/a><\/div><\/div><\/div>
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Donn\u00e9es techniques
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Donn\u00e9es scientifiques<\/h2><\/div>
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Explanation: <\/b> This skyscape features<\/a> dusty Sharpless<\/a> catalog emission region Sh2-155<\/a>, the Cave Nebula. In the telescopic image, data taken through a narrowband filter tracks the reddish glow of ionized hydrogen atoms. About 2,400 light-years away, the scene lies along the plane of our Milky Way Galaxy toward the royal northern constellation of Cepheus<\/a>. Astronomical explorations of the region reveal that it has formed at the boundary of the massive Cepheus B molecular cloud and the hot, young stars of the Cepheus OB 3 association<\/a>. The bright rim of ionized hydrogen gas<\/a> is energized by radiation from the hot stars, dominated by the brightest star above and left of picture center. Radiation driven ionization fronts are likely triggering collapsing cores and new star formation within<\/a>. Appropriately sized for a stellar nursery, the cosmic cave is over 10 light-years across.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Observation data: J2000.0 epoch<\/a><\/th>\n<\/tr>\n
Right ascension<\/a><\/th>\n22h<\/sup> 57m<\/sup> 17.14s<\/sup><\/td>\n<\/tr>\n
Declination<\/a><\/th>\n+62\u00b0 28\u2032 33.4″<\/td>\n<\/tr>\n
Distance<\/th>\n2400\u00a0ly<\/a><\/td>\n<\/tr>\n
Apparent magnitude<\/a> (V)<\/small><\/th>\n7.7<\/td>\n<\/tr>\n
Apparent dimensions (V)<\/small><\/th>\n50.0’x30.0′<\/td>\n<\/tr>\n
Constellation<\/a><\/th>\nCepheus<\/a><\/td>\n<\/tr>\n
Physical characteristics<\/th>\n<\/tr>\n
Radius<\/a><\/th>\n35\u00a0ly<\/td>\n<\/tr>\n
Absolute magnitude<\/a> (V)<\/small><\/th>\n16<\/td>\n<\/tr>\n
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Designations<\/th>\nSh2-155, Caldwell 9<\/a>, LBN\u00a0110.11+02.44<\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div><\/div><\/div>
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Donn\u00e9es de prises de vues<\/h2><\/div>
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Object :Sh2-155
\nDate : images du 3\/10\/16 au 30\/10\/2016
\nOptics :Tec140 F7
\nMount : Paramount ME Num\u00e9ro 2
\nLocation : Orange observatory
\nSeeing : fwhm de
\nCcd : Proline 16803
\nfilter wheel :FLI
\nfilters : Astrodon
\nHaOIII-rvb
\nFocuser :Robofocus
\nGuiding : Atik 314L+
\nTemp. out : \u00b0
\nTemp ccd : -35
\nTotal exposure : 32 h
\ntout en binning 1\u00d71
\n18 x 30\u2032 Ha en rouge
\n30 x 30′ OIII vert et bleu
\n8 x 10\u2032 en bleu
\n8 x 10\u2032 en vert
\n8 x 10\u2032 en rouge<\/p>\n<\/div><\/div><\/div>

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