2021 Wide Field Astrophotography Competition
May 30, 2013 – Jul 29, 2021
Optolong Astronomy Filter (Owner)
György Soponyai
朱鑫
Roy Siahaan
filter Optolong
Lubomir Lenko
Kokfong Lam
sammax Chong
Guianatours-Agencia
Tengyu Cai
Majo Chudy
Štěpán Skalka
Peter Čech
Gabriel Siegl