A Wide-Field View of Cassiopeia
I’m still working on optimizing the lens setting on my Canon EF70-200 f/2.8L USM lens and chose Cassiopeia for a little test. For this test I decided to keep the aperture wide open at f/2.8, the image shown is for 6-minutes total exposure time.
Tech Specs: Canon 6D, Canon EF70-200 f/2.8L USM lens, iOptron SkyTracker mount, ISO 1000, 12 x 30 seconds, f/2.8, 70mm, also included five dark and five bias frames. Image Date: October 25, 2016. Imaging location was Weatherly, Pennsylvania, USA.
EarthSky.org (earthsky.org/tonight/cassiopeia-is-shaped-like-an-m-or-w
Wikipedia (en.wikipedia.org/wiki/Cassiopeia_(constellation))
A Wide-Field View of Cassiopeia
I’m still working on optimizing the lens setting on my Canon EF70-200 f/2.8L USM lens and chose Cassiopeia for a little test. For this test I decided to keep the aperture wide open at f/2.8, the image shown is for 6-minutes total exposure time.
Tech Specs: Canon 6D, Canon EF70-200 f/2.8L USM lens, iOptron SkyTracker mount, ISO 1000, 12 x 30 seconds, f/2.8, 70mm, also included five dark and five bias frames. Image Date: October 25, 2016. Imaging location was Weatherly, Pennsylvania, USA.
EarthSky.org (earthsky.org/tonight/cassiopeia-is-shaped-like-an-m-or-w
Wikipedia (en.wikipedia.org/wiki/Cassiopeia_(constellation))