Le Mur Droit, alias Epée de Huygens, le 20 avril 2021 (Noël Donnard)

Contains: Solar system body or event

Le Mur Droit, alias Epée de Huygens, le 20 avril 2021

Acquisition type: Lucky imaging

Le Mur Droit, alias Epée de Huygens, le 20 avril 2021

Acquisition type: Lucky imaging

Newton 254/1200 Flextube SW goto
filtre astronomik ir pass Planet 742
barlow APM *2.7
ZWO ASI 290 MM

+/-500 images stackées

Sharpcap, Autostackert 3 !, Registax6 et Gimp

voici un petit survol lunaire sur le Rupes Recta, alias le Mur Droit, ou encore par sa forme d'épée selon déjà Huygens fin 17e siècle, "l'Epée dans la Lune".

Long de 120 km, résultat d'un glissement de terrain il y a 3.2 milliards d'années, ce Mur Droit ou Rupes Recta en latin n'est en fait qu'une pente relativement douce d'un dénivelé de 7 à 10%, haut de 300m mais large de 2 à 3km que l'on pourrait parcourir en randonnée pédestre, enfin... muni d'une combinaison adaptée lunaire qd même, mais non pas une falaise raide à devoir gravir avec harnais, piolet, corde de surêté et mousqueton telle une escalade alpine, comme les apparences laisseraient le croire😅.

A sa gauche, cette rainure plus courbe, Rima Birt, longue de 50km et large de 1.5 km.

De gauche à droite, dans l'ombre dans la terminaison, le cratère Nicollet, les cratères Birt autour de la rainure du même nom, à droite de la "Rupes Recta", les cratères Thebit et enfin un petit bout coupé d'Arzachel.

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Le Mur Droit, alias Epée de Huygens, le 20 avril 2021

Le Mur Droit, alias Epée de Huygens, le 20 avril 2021

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Le Mur Droit, alias Epée de Huygens, le 20 avril 2021

Le Mur Droit, alias Epée de Huygens, le 20 avril 2021

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