Optolong Deep-Sky Astrophotography Competition 2019
Jul 12, 2017 – Feb 22, 2020
Optolong Filter (Owner)
Duong tuan Doan
filter Optolong
Vachira Thomas
roberto frassi
Aemyttyastro
Janco Moolman
Tudor Chibacu
Marco Failli
Mirko Tondinelli
Riccardo Sgaramella (_il_gufo_)
Gianni Lacroce
Mike Taivalmaa
Raul Villaverde Fraile