{"id":11299,"date":"2023-01-19T09:26:30","date_gmt":"2023-01-19T08:26:30","guid":{"rendered":"https:\/\/reperes-astro.fr\/?p=11299"},"modified":"2025-01-31T20:01:17","modified_gmt":"2025-01-31T19:01:17","slug":"ztf-sera-t-elle-visible-aloeil-nu","status":"publish","type":"post","link":"https:\/\/reperes-astro.fr\/ztf-sera-t-elle-visible-aloeil-nu\/","title":{"rendered":"Derni\u00e8res nouvelles de la com\u00e8te ZTF"},"content":{"rendered":"
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RENDEZ VOUS SAMEDI 11<\/figcaption><\/figure>\n<\/div>\n\n\n

pratiquement pas visible \u00e0 l’oeil nu<\/p>\n\n\n

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Michel GUILLAIN : J’ai pris cette photo de la com\u00e8te avec du matos pas vraiment adapt\u00e9, une cam\u00e9ra CCD et une lunette de 1100 de focale. Alignement des poses sur la com\u00e8te avec la derni\u00e8re version de CometAlignment de PixInsight et alignement classique pour les \u00e9toiles. J’ai fais un StarXterminator pour ne r\u00e9cup\u00e9rer que les \u00e9toiles plus une petite bidouille pour r\u00e9cup\u00e9rer la galaxie, ensuite mixage des 3.<\/figcaption><\/figure>\n<\/div>\n\n\n

Visible \u00e0 l’oeil nu vers 23h quand la Lune \u00e9tait moins lumineuse et quand les lampadaires se sont \u00e9teints…mais vraiment tr\u00e8s faible…<\/p>\n\n\n\n

LIEN CI DESSOUS une animation de St\u00e9hane Losacco de ce samedi 28 janvier sur le d\u00e9placement de la com\u00e8te C2002 E3 (ZTF) prise hier soir depuis Rouvroy. \nLunette TS70 ED, correcteur-r\u00e9ducteur 0,79x, APN Fuji X-T1 \u00e0 800 ISO\n100 poses de 35 secondes trait\u00e9es avec Capture One et Photoscape pour le Gif<\/pre>\n\n\n\n
anigif.gif – Google Drive<\/a><\/p>\n\n\n\n
La m\u00e9t\u00e9o ne s’\u00e9tait pas tromp\u00e9… c’est bien vers 20h que le ciel s’est d\u00e9gag\u00e9…nous \u00e9tions encore huit \u00e0 l’observatoire et comme bous pouvez le voir ci-dessus St\u00e9phane a encore fait des merveilles. Nous avons ferm\u00e9 \u00e0 24h.<\/p>\n\n\n\n
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LE TRAJET DE LA COMETE <\/figcaption><\/figure>\n\n\n\n
Il semble que l’\u00e9clat de ZTF soit stabilis\u00e9 \u00e0 la limite de la visibilit\u00e9 \u00e0 l’oeil nu. Elle est encore tr\u00e8s basse le soir<\/p>\n\n\n\n
La com\u00e8te ZTF s\u2019approche de la Terre pour une rencontre rapproch\u00e9e (0,28 UA) le 1er f\u00e9vrier. <\/p>\n\n\n\n
D\u2019ici l\u00e0, la luminosit\u00e9 de la com\u00e8te<\/a> pourrait franchir le seuil de visibilit\u00e9 \u00e0 l\u2019\u0153il nu, avec peut-\u00eatre un pic de magnitude +5. <\/p>\n\n\n\n
Les effets des \u00e9ruptions solaires seront de plus en plus visibles \u00e0 mesure que la com\u00e8te approchera. <\/p>\n\n\n\n
Quand elles rencontrent  les com\u00e8tes, elles peuvent provoquer une reconnexion magn\u00e9tique dans les queues de com\u00e8tes, parfois les arracher compl\u00e8tement.  Ce mois-ci, plusieurs CME ont balay\u00e9 la com\u00e8te ZTF en raison de l\u2019augmentation de l\u2019activit\u00e9 solaire. L\u2019un d\u2019eux est responsable d’une d\u00e9connexion car la queue de plasma est \u00ab\u00a0d\u00e9racin\u00e9e\u00a0\u00bb de la t\u00eate de la com\u00e8te et s\u2019\u00e9loigne d’elle. voir l’animation ci -dessous :<\/p>\n\n\n\n
Com\u00e8te C\/2022 E3 ZTF (spaceweathergallery2.com)<\/a><\/p>\n\n\n\n
Restez \u00e0 l\u2019\u00e9coute!<\/p>\n
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pratiquement pas visible \u00e0 l’oeil nu Visible \u00e0 l’oeil nu vers 23h quand la Lune \u00e9tait moins lumineuse et quand les...<\/p>\n
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