Order by: Trending (past 30 days)Date ← Go back On 12/04/2020 10:24 pm by S. Ahil Ayyanar | Kanhangad ,Kerala, India Share Twitter Facebook Reddit LinkedIn Email Colours of Sirius. Optical illusion caused due to the atmospheric refraction. Camera - Canon PowerShot SX170 IS Shutter speed - 8 Aperture - f/5.9 Focal length - 80 mm ISO - 400