M101 - Pinwheel galaxy with supernova
This large faint galaxy has a delightful shape.
Six months ago, there was a supernova explosion which is still visible.
"The Pinwheel Galaxy (also known as Messier 101 or NGC 5457) is a face-on spiral galaxy 21 million light-years away in the constellation Ursa Major
With a diameter of 170,000 light-years M101 is seventy percent larger than the Milky Way. It has a disk mass on the order of 100 billion solar masses, along with a small bulge of about 3 billion solar masses." Wikipedia
Celestron C8 SCT on Orion Sirius GEM. f6.3 Focal reducer. Good transparency and bad seeing. 58°F, and no moon.
Autoguiding with Orion SSAG, magnificent mini guide scope, and PhD.
2" adapters and 2" Hutech IDAS LPR filter.
Nikon D5100 at prime focus at 1600 ASA, Mostly 4 minute exposures. 59 min. total light exposure.
Stacked in DSS With dark, flat, and bias frames. Processed in Lightroom.
Thanks to Lily
M101 - Pinwheel galaxy with supernova
This large faint galaxy has a delightful shape.
Six months ago, there was a supernova explosion which is still visible.
"The Pinwheel Galaxy (also known as Messier 101 or NGC 5457) is a face-on spiral galaxy 21 million light-years away in the constellation Ursa Major
With a diameter of 170,000 light-years M101 is seventy percent larger than the Milky Way. It has a disk mass on the order of 100 billion solar masses, along with a small bulge of about 3 billion solar masses." Wikipedia
Celestron C8 SCT on Orion Sirius GEM. f6.3 Focal reducer. Good transparency and bad seeing. 58°F, and no moon.
Autoguiding with Orion SSAG, magnificent mini guide scope, and PhD.
2" adapters and 2" Hutech IDAS LPR filter.
Nikon D5100 at prime focus at 1600 ASA, Mostly 4 minute exposures. 59 min. total light exposure.
Stacked in DSS With dark, flat, and bias frames. Processed in Lightroom.
Thanks to Lily