Forgive me in advance.. I know nothing of flash period observations.. Consider this as a question.. Define visually.. Doesn't match what I can see with the binocsulars. Doesn't agree at all with what I have videoed and posted to my website.. See everything titled EGP on.. http://www.poyntsource.com/New/Gallery.htm Scroll to the bottom.. Two Movies, 5 stacked JPG's .. Question.. Does the 2.2s period fit with the two times EGP "goes off" (blinking madly)in the "Disco Ball in Space"?? That's the only pattern I have seen in EGP.. and with close inspection it is more than two times as it ramps up and ramps down as it passes the same azimuth as the Sun.. If it is desired to have images that can determine both the speed and the flash pattern, let's talk because I could acquire them for you.. Derek -----Original Message----- From: seesat-l-bounces+breit_ideas=poyntsource.com@satobs.org [mailto:seesat-l-bounces+breit_ideas=poyntsource.com@satobs.org] On Behalf Of Leo Barhorst Sent: Thursday, September 22, 2011 9:44 AM To: SeeSat-L@satobs.org Subject: Re: Flashing period of Ajisai (object 16908) at about 2.2 seconds The photo IMG_3518 perfectly shows what can be seen visualy. Three flashes and then 1 missing. See PPAS for more obs. Greetings, Leo Barhorst -----Oorspronkelijk bericht----- From: alain.figer@club-internet.fr Sent: Thursday, September 22, 2011 3:36 PM To: Seesat-L ; Bram Dorreman Subject: Flashing period of Ajisai (object 16908) at about 2.2 seconds Hi all, On sept 14th, I took 2 series of photographs of the nice flashing satellite Ajisai (EGP) 1986-61A, while it passed by Beta Ophiuci (21h04.5 UT) then by Eta Scuti (21h06.6 UT). At first glance, the flashing pattern varies significantly, because a lot of flashes are either missing or visible, however it was rather easy to discover that a same pattern is repeating every 2.2 seconds or so. The accuracy on this photometric period (2.2 plus or minus 0.15 second) was limited by a 'rough' calculus of the angular speed of the satellite. I couldn't measure it directly on the photographs as usual (each pic being of 4 second exposure time) because only dots are visible so that I cannot define accurately the very beginning and the very end of the 4-sec track. Otherwise it would be easy to guarantee a period at 0.01 sec, due to the sharpness of the dots. I issued as examples, 2 such photos on my Flickr's site : http://www.flickr.com/photos/25296169@N07/6169044892/in/photostream http://www.flickr.com/photos/25296169@N07/6169044856/in/photostream/ Alain Figer, France 2.128° E ; 48.673°N ; 170 m asl -------------- next part -------------- An HTML attachment was scrubbed... URL: http://mailman.satobs.org/mailman/private/seesat-l/attachments/20110922/73ea c83c/attachment.html _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-l _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-l ----- No virus found in this message. Checked by AVG - www.avg.com Version: 10.0.1410 / Virus Database: 1520/3912 - Release Date: 09/22/11 _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-l
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