dialyvesdiallo

ts 125 et réducteur tsred279

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Bonjour à tous,

je voudrais savoir quelle bague allonge je dois rajouter pour obtenir des étoiles bien rondes en bord ce champs? l'image obtenue est avec  une lunette photoline 125 et le réducteur tsred279 et asi 294mc.

Si j'ai bien compris il faut 55mm entre le réducteur et la caméra, mais je ne suis pas sûr de la distance.

Merci pour votre aide.

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