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Newton 600 mm - STT8300 Clear filter. 15s exposure with slight defocusing. The magnitude fluctuations after the transit are related to clouds arrival. TJMS : telescope Jean Marc Salomon.
Telescope Jean Marc Salomon - SBIG STT8300M - Prism v9 - Calaphot Dayligth at the very beginning. The values outside main line ( 0,38 & 0,41 ) may be due to vibration (dome rotation).
