|The beautiful barred spiral galaxy NGC 4725 with its prominent ring structure in the constellation Coma
Berenices on March 20, 2020. NGC 4725 is a Seyfert Galaxy, suggesting an active nucleus probably containing a supermassive black hole. NGC 4725 is the brightest member
of the Coma I galaxy Group and is about 40 million light-years from Earth. In the same field of view, the spiral galaxy NGC 4712 can be seen. It is 196 million
light-years from Earth. NGC 4725 was discovered by Frederick William Herschel in 1785 while NGC 4712 was discovered by John Herschel in 1832 (source: Wikipedia).
Fourty-nine 3 minute exposures at ISO 800 were added for this shot with the DeepSkyStacker software (resulting in a 2 hour and 27 minutes exposure)
and the final image processing was done in Photoshop.
|Equipment: Canon EOS 450D Baader modified camera, TeleVue Paracorr Type II coma corrector,
16" f/4.5 "Ninja" dobsonian telescope riding on a dual-axis Tom Osypowski equatorial platform,
Lacerta MGEN autoguider, Lacerta off axis system (field of view comparison:
image of the moon with the same equipment).