{"id":8827,"date":"2020-07-28T00:53:33","date_gmt":"2020-07-27T23:53:33","guid":{"rendered":"http:\/\/outters.fr\/?p=8827"},"modified":"2025-07-15T17:04:05","modified_gmt":"2025-07-15T16:04:05","slug":"ngc6826","status":"publish","type":"post","link":"https:\/\/www.outters.fr\/?p=8827","title":{"rendered":"ngc6826"},"content":{"rendered":"

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ngc6826 en HOO-rgb
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Image HOO-rgb<\/h2><\/a><\/div><\/div><\/div>
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Commentaires sur l’objet photographi\u00e9<\/span><\/p><\/h1><\/span>

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

La n\u00e9buleuse plan\u00e9taire n’est pas \u00e9vidente \u00e0 traiter, les zones centrales sont vite satur\u00e9es et il faut bien admettre que le diam\u00e8tre et la r\u00e9solution du t\u00e9lescope sont insuffisantes pour avoir quelques d\u00e9tails sympas.<\/p>\n<\/div><\/div><\/div>

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Donn\u00e9es techniques
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Donn\u00e9es techniques de prise de vue<\/h2><\/div>
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Object : ngc6826
\nCommon name : Blink Nebulae
\nDate images Du 30 juin au 28 juillet 2020
\nOptics : Rcos 12.5″
\nMount : Paramount ME Num\u00e9ro 3
\nLocation : Sirene observatory
\nSeeing : fwhm : 1.56 \u00e0 2.73 arc sec \/pixel
\nCcd : Apogee 16U
\nfilter wheel : Apogee
\nfilters : Astrodon
\nHa OIII RGV
\nFocuser :TIM
\nGuiding : Atik 314L+
\nTemp. out : 10.5 \u00e0 17 T\u00b0
\nTemp ccd : -25\u00b0
\nResolution …………… 0.647 arcsec\/px
\nRotation …………….. -93.359 deg
\nObservation start time … 2020-07-11 22:51:17 UTC
\nObservation end time ….. 2020-07-16 03:02:00 UTC
\nGeodetic coordinates ….. 5 29 13 W 44 00 00 N 1100 m
\nFocal distance ……….. 2871.25 mm
\nPixel size …………… 9.00 um
\nField of view ………… 44′ 8.2″ x 44′ 8.2″
\nImage center …………. RA: 19 44 48.585
\nTotal exposure : 22.5 h
\ntout en binning 1×1
\nHa : 48 x10mn
\nOIII : 42 x 10 mn
\nRouge 30 x 5′ \/ vert 30 x 5′ \/ bleu 30 x 5′<\/div><\/div><\/div>
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Donn\u00e9es scientifiques<\/h2><\/div>
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Source wikipedia<\/p>\n

NGC 6826<\/b>\u00a0(ou\u00a0C15<\/b>) est une\u00a0n\u00e9buleuse plan\u00e9taire<\/a>\u00a0situ\u00e9e dans la constellation du\u00a0Cygne<\/a>. Elle est situ\u00e9e \u00e0 environ\u00a01\u00a0600\u00a0pc<\/a><\/abbr>\u00a0(\u223c5\u00a0220\u00a0a.l.<\/a><\/abbr>) de la Terre. NGC 6826 fait partie d’une classe de n\u00e9buleuses plan\u00e9taires surnomm\u00e9es \u00ab\u00a0Blink Nebulae\u00a0\u00bb. Ces n\u00e9buleuses, comme\u00a0NGC 2392<\/a>, ont la particularit\u00e9 de clignoter quand l’observateur alterne l’observation entre vision directe et vision indirecte. En vision directe, en fixant l’\u00e9toile centrale, la n\u00e9bulosit\u00e9 qui l’entoure semble dispara\u00eetre. Puis en observant la n\u00e9buleuse en vision indirecte celle-ci appara\u00eet tr\u00e8s brillante. Si l’on r\u00e9p\u00e8te ce mouvement de l’\u0153il plusieurs fois, la n\u00e9buleuse se met litt\u00e9ralement \u00e0 clignoter.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
NGC 6826<\/td>\n<\/tr>\n
\"Image<\/a><\/td>\n<\/tr>\n
Donn\u00e9es d\u2019observation
\n(\u00c9poque<\/a>\u00a0J2000.0<\/a>)<\/small><\/th>\n<\/tr>\n
Constellation<\/a><\/th>\nCygne<\/a><\/td>\n<\/tr>\n
Ascension droite<\/a>\u00a0(\u03b1)<\/th>\n19h<\/sup>\u00a044m<\/sup>\u00a048,2s<\/sup><\/td>\n<\/tr>\n
D\u00e9clinaison<\/a>\u00a0(\u03b4)<\/th>\n+50\u00b0\u00a031\u2032\u00a030,3\u2033<\/td>\n<\/tr>\n
Magnitude apparente<\/a>\u00a0(V)<\/small><\/th>\n+8.8<\/td>\n<\/tr>\n
Dimensions apparentes\u00a0(V)<\/small><\/th>\n27 \u00d7 24\u00a0secondes d’arc<\/a><\/td>\n<\/tr>\n
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Astrom\u00e9trie<\/th>\n<\/tr>\n
Distance<\/th>\nenviron\u00a01\u00a0600\u00a0pc<\/a><\/abbr>\u00a0(\u223c5\u00a0220\u00a0a.l.<\/a><\/abbr>)<\/td>\n<\/tr>\n
Caract\u00e9ristiques physiques<\/th>\n<\/tr>\n
Type d’objet<\/th>\nN\u00e9buleuse plan\u00e9taire<\/a><\/td>\n<\/tr>\n
D\u00e9couverte<\/th>\n<\/tr>\n
D\u00e9couvreur(s)<\/th>\nJohn Herschel<\/a><\/td>\n<\/tr>\n
Date<\/th>\n1793<\/a><\/td>\n<\/tr>\n
D\u00e9signation(s)<\/th>\nNGC 6826, C15, HD 186924, SAO 31951, PK 83+12.1<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div><\/div><\/div>
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