{"id":2270,"date":"2021-01-07T17:42:16","date_gmt":"2021-01-07T22:42:16","guid":{"rendered":"https:\/\/ciel-astro-ccd.com\/wp\/?page_id=2270"},"modified":"2023-05-06T23:41:46","modified_gmt":"2023-05-07T03:41:46","slug":"ced214","status":"publish","type":"page","link":"https:\/\/ciel-astro-ccd.com\/wp\/ced214\/","title":{"rendered":"CED 214"},"content":{"rendered":"\n
\"\"\/<\/a>
Cliquer sur l’image pour l’afficher plein \u00e9cran<\/em><\/figcaption><\/figure>\n\n\n\n
Date<\/strong>
2013\/09\/03

Lieu d\u2019observation<\/strong>
Alpes fran\u00e7aises<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Technique<\/strong><\/h4>\n\n\n\n
T\u00e9lescope<\/td>AstroSysteme Austria Orion 305 mm – 12″, 1086 mm FL, f\/3,62<\/td><\/tr>
Monture<\/td>ASA Direct drive Mount DDM85<\/td><\/tr>
Cam\u00e9ra d\u2019imagerie<\/td>MicroLine 8300 (Finger Lakes Instruments) \u2013 r\u00e9gul\u00e9 \u00e0 -30o<\/sup>\u00a0Celsius<\/td><\/tr>
Type d\u2019image<\/td>Ha(RVB)<\/td><\/tr>
Exposition<\/td>Ha (11 x 5\u2019 bin 2×2), R, V et B (4 x 2\u2019 bin 3×3 chacune)<\/td><\/tr>
Pr\u00e9traitement<\/td>Maxim DL<\/a><\/td><\/tr>
Traitement<\/td>Photoshop et PixInsight<\/a><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Descripton de l\u2019objet<\/strong><\/h4>\n\n\n\n
Type d\u2019objet<\/td>N\u00e9buleuse \u00e0 \u00e9mission<\/td><\/tr>
Constellation<\/td>C\u00e9ph\u00e9e<\/td><\/tr>
Magnitude visuelle<\/td>+10<\/td><\/tr>
Distance<\/td>6000 ann\u00e9es-lumi\u00e8re<\/td><\/tr>
Diam\u00e8tre<\/td>40 ann\u00e9es-lumi\u00e8re<\/td><\/tr>
Dimension vue de la Terre<\/td>50 x 40 minutes d\u2019arc<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
\u00a0La n\u00e9buleuse \u00e0 \u00e9mission Cederblad 214 (Ced 214) est tr\u00e8s difficile \u00e0 voir dans un t\u00e9lescope. Pour la voir visuellement, il faut un t\u00e9lescope d\u2019un grand diam\u00e8tre et un ciel sans pollution lumineuse.

Pour cette photo, l\u2019utilisation d\u2019un filtre Hydrog\u00e8ne-Alpha comme image de luminance a permis de faire ressortir les tr\u00e8s belles nuances et contrastes de la n\u00e9buleuse dans ce spectre lumineux. Aussi, le choix d\u2019un site sans pollution lumineuse et d\u2019un t\u00e9lescope d\u2019une focale f\/3,62 (tr\u00e8s ouvert) et d\u2019un diam\u00e8tre de 305 mm (12 pouces) ont contribu\u00e9 \u00e0 r\u00e9soudre cette image. \u00a0

Aussi d\u00e9sign\u00e9 Sharpless 171, Cederblad 214 est une jeune n\u00e9buleuse \u00e0 \u00e9mission d\u2019un diam\u00e8tre d\u2019environ 40 ann\u00e9es-lumi\u00e8re. Sa visibilit\u00e9 est aliment\u00e9e par la lueur de jeunes \u00e9toiles chaudes. Elle abrite aussi un petit amas d’\u00e9toiles d\u00e9nomm\u00e9 Berkeley 59 que l’on peut voir en haut \u00e0 droite de l\u2019image. Il repr\u00e9sente probablement une deuxi\u00e8me g\u00e9n\u00e9ration d\u2019\u00e9toiles jeunes dont la formation a \u00e9t\u00e9 cr\u00e9\u00e9e par ce vaste nuage de gaz en expansion. Ced 214 est \u00e0 environ 6000 ann\u00e9es-lumi\u00e8re de la terre. \u00a0 \u00a0<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
Richard Beauregard
Le Ciel Astro \u2013 CCD
Mon impression \u00ab Nous ne pouvons pas \u00eatre seuls dans ce gigantesque univers \u00bb<\/td><\/tr><\/tbody><\/table><\/figure>\n","protected":false},"excerpt":{"rendered":"

Date2013\/09\/03 Lieu d\u2019observationAlpes fran\u00e7aises Technique T\u00e9lescope AstroSysteme Austria Orion 305 mm – 12″, 1086 mm FL, f\/3,62 Monture ASA Direct drive Mount DDM85 Cam\u00e9ra d\u2019imagerie MicroLine 8300 (Finger Lakes Instruments) \u2013 r\u00e9gul\u00e9 \u00e0 -30o\u00a0Celsius Type d\u2019image Ha(RVB) Exposition Ha (11 x 5\u2019 bin 2×2), R, V et B (4 x 2\u2019 bin 3×3 chacune) Pr\u00e9traitement…<\/p>\n

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