This Week In Astronomy

April’s Deep Sky Challenge: Leo Galaxy Cluster

You’ll want a big reflector telescope and dark, clear skies to go after this month’s challenge object; the compact galaxy cluster Hickson 44, also named the Leo Quartet, or Galaxy Cluster NGC 3190, after its brightest member. This grouping of distant galaxies is located less than halfway between the stars Adhafera (Zeta Leonis) and Algieba (Gamma Leonis) along the sickle asterism of constellation Leo.