Thursday, September 13, 2018
MIRA...MAXIMUM TO MINIMUM Taken by Pierre PONSARD on September 12, 2018 @ La Fosse Observatory (Manhay-Belgium)
Mira is a special variable star in Cetus constellation. Indeed, this star can be seen with naked-eyes (by example on the first picture : the 08 February 2018), and can not be seen with naked-eyes but only by telescope (on this example : the 12 september 2018).
The 2 pictures were taken with a Canon 60 Da on a 12 inches telescope (2 minutes of exposure at 400 ISO).