The LEO I Dwarf Galaxy,


Leo I is a dwarf spheroidal galaxy in the constellation Leo. At about 820,000 light-years distant, it is a member of the Local Group of galaxies and is thought to be one of the most distant satellites of the Milky Way galaxy.

Leo I shines at magnitude 11.2, It can be a challenge to observe and photograph due to its very low surface brightness and the often overwhelming glare from the bright star Regulus – Alpha Leonis.

Regulus is the brightest star in Leo, and is visible at the bottom edge of this image. The simplest way to observe it with a telescope is to be in a dark location and try to place Regulus just outside the FOV of the eyepiece.

I did manage to resolve this low surface brightness Dwarf galaxy into individuals star with the 4″ APO, About 14 other  IC & PGC catalog galaxies are visible in the background as well.

Captured with my Explore Scientific 102mm F7 FCD100 Triplet APO telescope and QHY183C cooled Cmos Color Camera, Bisque ME mount, 330 minutes(66 x 300sec subs) 5 hour and 30 minutes.


Best Regards,

John Chumack