_Spirit_
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All my filters are 2''. No wheel - just this https://www.teleskop-express.de/shop/product_info.php/info/p10475_TS-Optics-M48-Filter-Changer---strengthened-Design.html Sometimes i use filter directly on GPU coma corrector with TS Newton 150/600. Here o3 baader 8,5nm in this configuration - no flat:
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I am very happy with this filter. A big difference to Baader OIII 8,5nm.
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IC 1396 Baader Ha F2 - 60x300s + 60x120s Antlia 3nm OIII - 29x300s (09-04-2021) H6 F 2,8 + ASI 294 Capital city Warsaw Poland Bortlea 8-9
