{"id":11122,"date":"2024-12-20T08:00:00","date_gmt":"2024-12-20T07:00:00","guid":{"rendered":"https:\/\/www.blog.neoprog.eu\/?p=11122"},"modified":"2024-12-13T13:07:48","modified_gmt":"2024-12-13T12:07:48","slug":"les-secrets-de-lastrophoto","status":"publish","type":"post","link":"https:\/\/www.blog.neoprog.eu\/index.php\/2024\/12\/20\/les-secrets-de-lastrophoto\/","title":{"rendered":"Les secrets de l’astrophoto"},"content":{"rendered":"\n
\"\"<\/figure>\n\n\n\n

Alors oui, je lis aussi des livres d\u2019astronomie. En fait \u00e7a n\u2019est pas nouveau mais maintenant j\u2019en parle apr\u00e8s avoir d\u00e9vor\u00e9 l\u2019\u0153uvre de Huber Reeves et Carl Sagan. <\/p>\n\n\n\n

C\u2019est \u00e0 la SAFGA<\/a>, l\u2019association astronomique que je fr\u00e9quente, que j\u2019ai entendu parler en bien du livre Les secrets de l\u2019astrophoto. Et comme je d\u00e9bute dans cet exercice, j\u2019ai d\u00e9cid\u00e9 de le lire pour aplanir certaines difficult\u00e9s.<\/p>\n\n\n\n

Les secrets de l\u2019astrophoto propose d\u2019expliquer aux novices comment r\u00e9aliser des images du ciel avec un appareil photo num\u00e9rique. Mat\u00e9riel, \u00e9quipement, objets, limitations, trucs et astuces, normalement avec ce livre et un peu de pratique vous devriez r\u00e9ussir vos premiers clich\u00e9s.<\/p>\n\n\n\n

Pour ma part, ce livre est arriv\u00e9 sans doute trop tard. Je sais qu\u2019il faut mettre une doudoune la nuit, qu\u2019il faut aller loin des \u00e9clairages publics, combien de temps poser sur un tr\u00e9pied avec tel ou tel objectif, comment photographier la lune ou la Voie lact\u00e9e. \u00c7a n\u2019est pas non plus bien sorcier. <\/p>\n\n\n\n

Le livre arrive trop tard et pour certains chapitres, comme celui sur le ciel profond, il est bien trop l\u00e9ger. Le passage sur l\u2019alignement polaire d\u2019une monture \u00e9quatoriale ne vous aidera pas, sauf si vous \u00eates un g\u00e9nie et le traitement des longues poses sous Photoshop devrait d\u00e9courager tout \u00eatre humain normalement constitu\u00e9. Il existe des logiciels gratuits comme Siril qui font bien mieux le travail.<\/p>\n\n\n\n

Le bouquin survole les probl\u00e9matiques et n\u2019explique pas vraiment comment les r\u00e9soudre, sauf pour les probl\u00e8mes \u00e9l\u00e9mentaires, enfin pour moi. Les milliers de tutoriels<\/a> pr\u00e9sents sur la toile vont bien plus loin et souvent bien plus au fond du sujet.<\/p>\n\n\n\n

Les secrets de l\u2019astrographie, qui s\u2019adresse clairement au d\u00e9butant n\u2019ayant jamais photographi\u00e9 le ciel, risque \u00e9galement de le d\u00e9courager rapidement s\u2019il veut aller plus loin qu\u2019un fil\u00e9 d\u2019\u00e9toiles ou une image de la lune.<\/p>\n","protected":false},"excerpt":{"rendered":"

C\u2019est \u00e0 la SAFGA, l\u2019association astronomique que je fr\u00e9quente, que j\u2019ai entendu parler en bien du livre Les secrets de l\u2019astrophoto. 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