Neowise
This star attraction in July night sky compelled me to spend couple of hours after 10 PM by the side of farm fields, an hour drive north to avoid light pollution. The next opportunity to see it again will be 7000 years from now; who knows humanity may not exist by then.
I have never done an astrophotography, so I made a lot of blunders. At the end, after stacking 9 images, each taken at 5s exposure and 3200 ISO using a 300mm2.8 lens on a D5 produced this image. I used Deep Sky Stacker software to stack 9 images. I had to crank up the brightness in post processing to see both ion and dust tails. The ion tail is slightly bluish in color and goes straight out, because the charged particles in the tail follow the magnetic lines of the sun and as well as the comet itself. Whereas the dust tail is somewhat diffuse and it curves to the right due to variation of gravitational forces on different sized particles in the dust tail. The greenish coma or halo around the nose of the comet is created by the sun light striking the nucleus of the comet and melting the outer core into gas and dust. July 23, 2020. Minesing, Ontario
Neowise
This star attraction in July night sky compelled me to spend couple of hours after 10 PM by the side of farm fields, an hour drive north to avoid light pollution. The next opportunity to see it again will be 7000 years from now; who knows humanity may not exist by then.
I have never done an astrophotography, so I made a lot of blunders. At the end, after stacking 9 images, each taken at 5s exposure and 3200 ISO using a 300mm2.8 lens on a D5 produced this image. I used Deep Sky Stacker software to stack 9 images. I had to crank up the brightness in post processing to see both ion and dust tails. The ion tail is slightly bluish in color and goes straight out, because the charged particles in the tail follow the magnetic lines of the sun and as well as the comet itself. Whereas the dust tail is somewhat diffuse and it curves to the right due to variation of gravitational forces on different sized particles in the dust tail. The greenish coma or halo around the nose of the comet is created by the sun light striking the nucleus of the comet and melting the outer core into gas and dust. July 23, 2020. Minesing, Ontario