satellite irridium

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Astrophotography

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astronomia View gallery (21 photos)

satellite irridium sent on November 19, 2017 (18:17) by FloGse. 3 comments, 774 views.

, 15 sec f/4.0, ISO 200, tripod.

Vi propongo la fotografia di un satellite irridium, veramente facile da fare. Sicuramente gli astrofili conoscono l'esistenza di questi satelliti che spesso passano sopra i nostri cieli. Comunque porto questa testimonianza fotografica. Sono satelliti atti alla telecomunicazione che girano intorno alla terra a circa 780 km di altezza, hanno una velocita di 7,4 km al secondo, ed hanno sta caratteristica che in funzione di dove si trovano col riflesso del sole sui loro pannelli creano un bagliore (flare) anche molto intenso, arrivano alla magnitudine di -8,5... la più forte dopo sole e luna visibile in cielo. Da qui l'ingenio del uomo, esiste una app che in funzione di dove ti trovi sulla terra ti dice numero del irridium ora minuto secondo esatto di quando succedera' il flare che cresce in maniera esponenziale fino a raggiungere il suo massimo per poi calare fino a scomparire. Bene spero sia gradita sta info. Dati fonte wikipedia.

13 persons like it: Albertopantellini, Alfredo64, Brièxit, Davide Tundis, Giovanni e Davide, LucianoSerra.d, Marcophotographer, Matley Siena, Mauro66, Maxrevolution, Motofoto, Pier Luigi Ferrari, Quellolà

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Giovanni e Davide

sent on November 19, 2017 (18:36) | This comment has been automatically translated (show/hide original)

Instinctive, very good. Compliments !
Hi, good light and photos :-) :-)

FloGse

sent on November 19, 2017 (21:51) | This comment has been automatically translated (show/hide original)

Thank you Giovanni and David,
I take advantage of it to add another detail,
flare is caused by size antennas
188 x 86 x 4 cm :-) ;-) more or less the size of a table
Hello.

Denny85

sent on January 28, 2018 (13:54) | This comment has been automatically translated (show/hide original)

Congratulations .... I thought it was the reflection of the photovoltaic panels instead of the antennas

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Some comments may have been automatically translated with Microsoft Translator.