{"id":9880,"date":"2019-11-05T14:57:51","date_gmt":"2019-11-05T13:57:51","guid":{"rendered":"https:\/\/www.stelvision.com\/astro\/?p=9880"},"modified":"2025-10-02T11:14:18","modified_gmt":"2025-10-02T09:14:18","slug":"premier-dessin-astronomique-astrodessin","status":"publish","type":"post","link":"https:\/\/www.stelvision.com\/astro\/premier-dessin-astronomique-astrodessin\/","title":{"rendered":"Faire son premier dessin astronomique"},"content":{"rendered":"\n<p class=\"chapo\">Le dessin astronomique est une technique accessible \u00e0 tous et qui aiguise le sens de l&rsquo;observation.  Dessiner, c&rsquo;est aussi garder la trace de ses soir\u00e9es sous les \u00e9toiles. Vous \u00eates tent\u00e9s ? Petit guide pour d\u00e9buter.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img decoding=\"async\" width=\"1024\" height=\"536\" src=\"https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/dessin_FBTW-1024x536.jpg\" alt=\"\" class=\"wp-image-9931\" srcset=\"https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/dessin_FBTW.jpg 1024w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/dessin_FBTW-300x157.jpg 300w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/dessin_FBTW-768x402.jpg 768w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/dessin_FBTW-750x393.jpg 750w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/dessin_FBTW-570x298.jpg 570w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/dessin_FBTW-368x193.jpg 368w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/dessin_FBTW-270x141.jpg 270w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/dessin_FBTW-1000x523.jpg 1000w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n<p>D\u00e8s qu\u2019il a fait ses premi\u00e8res d\u00e9couvertes \u00e0 l\u2019oculaire, l\u2019astronome d\u00e9butant a souvent envie d\u2019immortaliser ce qu\u2019il voit, ne serait-ce que pour les partager avec son entourage. Le premier r\u00e9flexe est alors de penser \u00e0 la photo : un proc\u00e9d\u00e9 qui peut s\u2019av\u00e9rer tr\u00e8s vite complexe et on\u00e9reux. Mais nombre d\u2019astronomes pratiquent \u00e9galement une autre technique, accessible et au co\u00fbt vraiment limit\u00e9&nbsp;: le dessin. Et si vous tentiez vous aussi de vous lancer&nbsp;?<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Les limites du dessin astronomique\u2026<\/h2>\n\n\n\n<p>\u00c9galement appel\u00e9 astrodessin, le dessin astronomique\npr\u00e9sente de nombreux avantages. Mais avant de les \u00e9num\u00e9rer, arr\u00eatons-nous\nd\u2019abord sur ses limites. En premier lieu, il ne permet jamais de restituer\nexactement l\u2019aspect d\u2019un objet&nbsp;: en effet, le dessin est le reflet de ce\nque l\u2019auteur y met, celui-ci pouvant voir des choses qui n\u2019existent pas\u2026 ou ne\npas voir des choses qui existent. Autre point limitant, il est en g\u00e9n\u00e9ral moins\nspectaculaire qu\u2019une belle image, car \u00e0 la diff\u00e9rence de l\u2019appareil photo,\nl\u2019\u0153il n\u2019accumule pas la lumi\u00e8re et voit donc moins de d\u00e9tails et de couleurs.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u2026 et ses int\u00e9r\u00eats<\/h2>\n\n\n\n<p>Voyons maintenant les avantages de l&rsquo;astrodessin : ils sont multiples ! La technique est \u00e9conomique car tr\u00e8s peu de mat\u00e9riel est n\u00e9cessaire (papier, crayons, gomme) et d\u00e9j\u00e0 souvent dans les tiroirs du bureau. Elle est aussi tr\u00e8s simple \u00e0 mettre en \u0153uvre, beaucoup de dessins pouvant \u00eatre ex\u00e9cut\u00e9s en quelques minutes derri\u00e8re n\u2019importe quel instrument y compris les jumelles, ou m\u00eame \u00e0 l\u2019\u0153il nu. Plus int\u00e9ressant, sa pratique \u00e9duque l\u2019\u0153il \u00e0 l\u2019observation&nbsp;: il faut en effet \u00eatre plus attentif pour d\u00e9celer les d\u00e9tails et les repr\u00e9senter correctement, ce qui permet peu \u00e0 peu d&rsquo;avoir un regard plus aff\u00fbt\u00e9 que si l\u2019on reste un simple observateur.<\/p>\n\n\n\n<p>Un dernier point&nbsp;: souvent, le d\u00e9butant h\u00e9site \u00e0 se\nlancer parce qu\u2019il pense&nbsp;qu\u2019il ne sait pas dessiner. Mais est-ce vraiment\ndifficile de crayonner des points (les \u00e9toiles) et des taches floues (les galaxies\net autres n\u00e9buleuses)&nbsp;? Parfois m\u00eame, c\u2019est l\u2019occasion de se d\u00e9couvrir un\ntalent cach\u00e9&nbsp;!<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Les pr\u00e9paratifs<\/h2>\n\n\n\n<p>Convaincu par ces arguments&nbsp;? Voici une m\u00e9thode pour faire vos premiers pas. Pour cela, munissez-vous d&rsquo;outils simples. Comme support, une feuille de papier machine blanc fait l\u2019affaire et c\u00f4t\u00e9 crayons, a minima un seul graphite HB ou mieux, trois crayons plus ou moins gras (par exemple, 2H, HB et 2B) sont parfaits. Ajoutez une gomme blanche, un support rigide (planchette ou carton), une pince pour maintenir la feuille et une lampe rouge pour \u00e9viter de vous \u00e9blouir, et vous voil\u00e0 pr\u00eats&nbsp;!<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img decoding=\"async\" width=\"1024\" height=\"669\" src=\"https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/dessin_accessoires-1024x669.jpg\" alt=\"Photo avec une planchette munie d'une pince, un gabarit et une feuille blanche, quelques crayons graphite, une gomme et une lampe rouge qui sont les principaux accessoires pour d\u00e9buter le dessin astronomique.\" class=\"wp-image-9938\" srcset=\"https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/dessin_accessoires.jpg 1024w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/dessin_accessoires-300x196.jpg 300w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/dessin_accessoires-768x502.jpg 768w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/dessin_accessoires-750x490.jpg 750w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/dessin_accessoires-570x372.jpg 570w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/dessin_accessoires-368x240.jpg 368w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/dessin_accessoires-270x176.jpg 270w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/dessin_accessoires-1000x653.jpg 1000w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"><strong>Une planchette \u00e9ventuellement munie d&rsquo;une pince, un gabarit ou une feuille blanche, quelques crayons graphite, une gomme et une lampe rouge sont les principaux accessoires pour d\u00e9buter le dessin astronomique.<\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<p>Pour vous aider \u00e0 respecter les proportions, tracez un cercle de 8 \u00e0 10 centim\u00e8tres de diam\u00e8tre, qui correspondra au champ de vision de l\u2019instrument. Sur une feuille A4 plac\u00e9e horizontalement, vous pouvez tracer deux cercles c\u00f4te \u00e0 c\u00f4te en haut et garder la partie inf\u00e9rieure pour noter diverses informations qu\u2019il est toujours int\u00e9ressant et m\u00eame important de relever&nbsp;: date, lieu, heure de d\u00e9but et de fin d\u2019observation, qualit\u00e9 du ciel, diam\u00e8tre et focale de l\u2019instrument, oculaire utilis\u00e9 et grossissement r\u00e9sultant, accessoires \u00e9ventuels. Sans oublier le nom de l\u2019objet observ\u00e9 et sa constellation&nbsp;!<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">On se lance<\/h2>\n\n\n\n<p>Reste \u00e0 choisir un sujet \u00e0 dessiner.&nbsp;Nous vous conseillons de commencer par un objet du ciel profond, plus facile \u00e0 reproduire qu\u2019un crat\u00e8re lunaire ou une surface plan\u00e9taire. La premi\u00e8re notion \u00e0 ma\u00eetriser est celle des proportions, afin de placer correctement les \u00e9toiles les unes par rapport aux autres et pour donner la bonne taille \u00e0 l\u2019objet en fonction de ce fond \u00e9toil\u00e9. Une petite subtilit\u00e9&nbsp;: le dessin est r\u00e9alis\u00e9 en n\u00e9gatif, c\u2019est-\u00e0-dire qu\u2019\u00e9toiles et objets sont inscrits en noir sur un fond de ciel blanc. Logiquement, plus un objet est brillant, plus il doit donc \u00eatre sombre sur le dessin. Pour les \u00e9toiles les plus lumineuses, on dessine donc un point plus gros et pour les zones les plus visibles des objets diffus, on densifie son flou ou bien on utilise un crayon plus gras.<\/p>\n\n\n\n<p>Voici une m\u00e9thode pas \u00e0 pas pour vous aider \u00e0 r\u00e9aliser votre premier dessin, avec pour exemple la n\u00e9buleuse plan\u00e9taire M27 :<\/p>\n\n\n\n<div class=\"wp-block-media-text alignwide is-stacked-on-mobile\"><figure class=\"wp-block-media-text__media\"><img decoding=\"async\" width=\"800\" height=\"800\" src=\"https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/01.jpg\" alt=\"\" class=\"wp-image-9882 size-full\" srcset=\"https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/01.jpg 800w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/01-150x150.jpg 150w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/01-300x300.jpg 300w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/01-768x768.jpg 768w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/01-750x750.jpg 750w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/01-570x570.jpg 570w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/01-368x368.jpg 368w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/01-270x270.jpg 270w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/01-62x62.jpg 62w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/01-100x100.jpg 100w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<p>1. Reportez \u00e0 l\u2019aide d\u2019un crayon assez pointu les \u00e9toiles les plus brillantes en rep\u00e9rant les figures g\u00e9om\u00e9triques qu\u2019elles forment (lignes, triangles, angles droits\u2026). Respectez bien les proportions par rapport au bord du champ de vision, figur\u00e9 sur le dessin par le cercle. Cette \u00e9tape doit \u00eatre soign\u00e9e car elle pose les jalons pour tout le reste du dessin et permet de bien recentrer le champ lorsque l\u2019instrument n\u2019est pas motoris\u00e9.<\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-media-text alignwide is-stacked-on-mobile\"><figure class=\"wp-block-media-text__media\"><img decoding=\"async\" width=\"800\" height=\"800\" src=\"https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/02.jpg\" alt=\"\" class=\"wp-image-9883 size-full\" srcset=\"https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/02.jpg 800w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/02-150x150.jpg 150w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/02-300x300.jpg 300w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/02-768x768.jpg 768w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/02-750x750.jpg 750w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/02-570x570.jpg 570w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/02-368x368.jpg 368w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/02-270x270.jpg 270w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/02-62x62.jpg 62w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/02-100x100.jpg 100w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<p>2. Placez ensuite les \u00e9toiles plus faibles, qui seront plus ou moins grosses suivant leur luminosit\u00e9. Parfois, le nombre d\u2019\u00e9toiles visibles est important&nbsp;: ne reportez que les principales.<\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-media-text alignwide is-stacked-on-mobile\"><figure class=\"wp-block-media-text__media\"><img decoding=\"async\" width=\"800\" height=\"800\" src=\"https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/03.jpg\" alt=\"\" class=\"wp-image-9885 size-full\" srcset=\"https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/03.jpg 800w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/03-150x150.jpg 150w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/03-300x300.jpg 300w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/03-768x768.jpg 768w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/03-750x750.jpg 750w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/03-570x570.jpg 570w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/03-368x368.jpg 368w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/03-270x270.jpg 270w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/03-62x62.jpg 62w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/03-100x100.jpg 100w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<p>3. \u00c0 l\u2019aide d\u2019un crayon \u00e0 la mine arrondie, dessinez la forme g\u00e9n\u00e9rale de l\u2019objet en tenant compte des \u00e9toiles que vous avez plac\u00e9es. Grisez l\u2019int\u00e9rieur sans trop appuyer.<\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-media-text alignwide is-stacked-on-mobile\"><figure class=\"wp-block-media-text__media\"><img decoding=\"async\" width=\"800\" height=\"800\" src=\"https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/04.jpg\" alt=\"\" class=\"wp-image-9886 size-full\" srcset=\"https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/04.jpg 800w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/04-150x150.jpg 150w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/04-300x300.jpg 300w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/04-768x768.jpg 768w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/04-750x750.jpg 750w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/04-570x570.jpg 570w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/04-368x368.jpg 368w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/04-270x270.jpg 270w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/04-62x62.jpg 62w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/04-100x100.jpg 100w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<p>4. Si l\u2019objet a un aspect flou, utilisez un morceau de papier buvard, un mouchoir en papier ou le bout du doigt pour frotter d\u00e9licatement la zone voulue et \u00e9taler ainsi le d\u00e9p\u00f4t de graphite. Vous pouvez ensuite griser puis flouter \u00e0 nouveau les zones les plus brillantes.<\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-media-text alignwide is-stacked-on-mobile\"><figure class=\"wp-block-media-text__media\"><img decoding=\"async\" width=\"800\" height=\"800\" src=\"https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/05.jpg\" alt=\"\" class=\"wp-image-9888 size-full\" srcset=\"https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/05.jpg 800w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/05-150x150.jpg 150w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/05-300x300.jpg 300w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/05-768x768.jpg 768w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/05-750x750.jpg 750w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/05-570x570.jpg 570w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/05-368x368.jpg 368w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/05-270x270.jpg 270w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/05-62x62.jpg 62w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/05-100x100.jpg 100w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<p>5. \u00c0 l\u2019aide de la gomme, rectifiez les contours. Un coin ou un angle vif (gomme coup\u00e9e au cutter) est pratique pour faire des contours nets ou une zone blanche (ex. : le chenal sombre d\u2019une n\u00e9buleuse) \u00e0 l\u2019int\u00e9rieur de la zone gris\u00e9e. Au besoin, estompez \u00e0 nouveau au buvard ou au doigt si c\u2019est n\u00e9cessaire, en particulier si les coups de gomme sont trop visibles. <\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-media-text alignwide is-stacked-on-mobile\"><figure class=\"wp-block-media-text__media\"><img decoding=\"async\" width=\"800\" height=\"800\" src=\"https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/06.jpg\" alt=\"\" class=\"wp-image-9889 size-full\" srcset=\"https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/06.jpg 800w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/06-150x150.jpg 150w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/06-300x300.jpg 300w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/06-768x768.jpg 768w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/06-750x750.jpg 750w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/06-570x570.jpg 570w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/06-368x368.jpg 368w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/06-270x270.jpg 270w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/06-62x62.jpg 62w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/06-100x100.jpg 100w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<p>6. Derni\u00e8re \u00e9tape&nbsp;: orientez votre dessin. Pour cela, observez le sens de d\u00e9filement des \u00e9toiles dans l\u2019oculaire (arr\u00eatez votre moteur au besoin)&nbsp;: le c\u00f4t\u00e9 o\u00f9 elles apparaissent est l\u2019est, celui o\u00f9 elles disparaissent est l\u2019ouest. Pour trouver le nord ou le sud, d\u00e9placez l\u00e9g\u00e8rement votre instrument en utilisant l\u2019axe de d\u00e9clinaison (monture \u00e9quatoriale) ou le mouvement de hauteur (jumelles sur tr\u00e9pied et montures azimutales).<\/p>\n<\/div><\/div>\n\n\n\n<p><br>7. Enfin, compl\u00e9tez le dessin par les informations utiles&nbsp;: nom de l\u2019objet,  constellation, qualit\u00e9 du ciel, instrument et accessoires utilis\u00e9s\u2026  C\u2019est termin\u00e9&nbsp;!  <\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Apr\u00e8s le dessin<\/h2>\n\n\n\n<p>Il faut bien l\u2019avouer, ce n\u2019est pas toujours simple d\u2019ex\u00e9cuter un joli dessin de nuit tout en regardant dans un instrument astronomique. Alors il n\u2019est pas interdit de consid\u00e9rer ce document comme un brouillon \u00e0 remettre au propre. Dans ce cas, nous vous conseillons de recopier le dessin imm\u00e9diatement ou le lendemain, histoire d\u2019avoir encore l\u2019image en t\u00eate. Les notes compl\u00e9mentaires prises au moment de l\u2019observation pour les d\u00e9tails les plus difficiles \u00e0 reproduire la nuit peuvent alors \u00eatre plus facilement exploit\u00e9es&nbsp;(\u00ab&nbsp;<em>bords de la n\u00e9buleuse tr\u00e8s diffus<\/em>&nbsp;\u00bb, \u00ab&nbsp;<em>noyau de la galaxie quasi-ponctuel<\/em>&nbsp;\u00bb \u2026 ). Une astuce&nbsp;: pour davantage de fid\u00e9lit\u00e9, reportez la position des \u00e9toiles du brouillon par transparence sur le dessin d\u00e9finitif.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"alignright is-resized\"><img decoding=\"async\" width=\"387\" height=\"539\" src=\"https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/fiche_dessin_stelvision_illu.jpg\" alt=\"Fiche de dessin astronomique Stelvision\" class=\"wp-image-9934\" style=\"width:290px;height:404px\" srcset=\"https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/fiche_dessin_stelvision_illu.jpg 387w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/fiche_dessin_stelvision_illu-215x300.jpg 215w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/fiche_dessin_stelvision_illu-368x513.jpg 368w, https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/fiche_dessin_stelvision_illu-270x376.jpg 270w\" sizes=\"(max-width: 387px) 100vw, 387px\" \/><\/figure>\n<\/div>\n\n\n<p>Le dessin est termin\u00e9&nbsp;? Il ne reste qu\u2019\u00e0 le glisser dans votre carnet d\u2019observation. Pour encore plus de plaisir, pensez \u00e0 adopter un gabarit d\u2019observation standard qui donnera une plus grande homog\u00e9n\u00e9it\u00e9 \u00e0 votre travail. Vous pouvez le d\u00e9finir par vous-m\u00eame, ou bien utiliser la <a href=\"https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2019\/11\/fiche_dessin_stelvision.pdf\">fiche de dessin astronomique Stelvision<\/a>.<\/p>\n\n\n\n<p> Lorsque ce carnet commencera \u00e0 se garnir, vous n\u2019aurez plus qu\u2019\u00e0 trouver des occasions de l\u2019ouvrir en compagnie de n\u00e9ophytes ou d\u2019autres astrodessinateurs, le plaisir est garanti&nbsp;! Ces moments seront autant d\u2019opportunit\u00e9s pour comparer des configurations instrumentales, des techniques de dessin ou de rendu suivant la \u00ab&nbsp;patte&nbsp;\u00bb de l\u2019auteur.<\/p>\n\n\n\n<p>Et pour diffuser vos dessins sur Internet, apr\u00e8s les avoir scann\u00e9 ou photographi\u00e9, voici une astuce : passez-les en n\u00e9gatif \u00e0 l&rsquo;aide d&rsquo;un logiciel de retouche. Effet r\u00e9aliste garanti ! <\/p>\n\n\n\t\t\t\t\t\t<div style=\"margin-bottom: 18px;\">\t\t\t\t<a rel=\"nofollow\" href=\"https:\/\/www.stelvision.com\/astro\/boutique\/le-ciel-au-telescope\/?ref=bottom\">\r\n\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/www.stelvision.com\/astro\/wp-content\/uploads\/2025\/10\/Ciel-au-telescope-1200x900-1.webp\" alt=\"visuel publicitaire livre le Ciel au t\u00e9lescope\" class=\"img-responsive\">\r\n\t\t\t\t<\/a>\r\n\t\t\t\t<p style=\"text-align: center; margin-bottom: 0em; margin-top: 0.25em;\"><strong><a rel=\"nofollow\" href=\"https:\/\/www.stelvision.com\/astro\/boutique\/le-ciel-au-telescope\/?ref=bottom\">Le Ciel au t\u00e9lescope, le guide indispensable pour r\u00e9ussir vos observations<\/a><\/strong><\/p>\r\n\t\t\t<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Le dessin astronomique est une technique accessible \u00e0 tous et peu on\u00e9reuse, qui permet de garder une trace de ses observations. Petit guide pour d\u00e9buter.<\/p>\n","protected":false},"author":5,"featured_media":9931,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[2],"tags":[],"class_list":["post-9880","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-observer-le-ciel"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Faire son premier dessin astronomique<\/title>\n<meta name=\"description\" content=\"Le dessin astronomique est une technique accessible \u00e0 tous et qui aiguise le sens de l&#039;observation. Vous \u00eates tent\u00e9s ? 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