From good series of photos taken on 20 May 2015 , 21h43-46m TU, using a Canon EOS 600D + 18 mm objective (4 s duration, ISO 3200) and a Canon EOS 6D + 200 mm teleobjective (2 s duration, ISO 4000) as well, I derived this accurate value for the period : T= 2.516 s +/- 0.003 s (from 51 periods) See an addition of 4 images at : https://www.flickr.com/photos/29415930_at_N04/17314275444/in/dateposted-public/ Regards Alain Figer 48.67 N ; 2.13 E ; 170 m a.s.l. _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-lReceived on Thu May 21 2015 - 16:39:52 UTC
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