SH2-261 is an HII region in the constellation of Orion. It is also known as Lower’s Nebula named after Harold Lower and his son who discovered this object in 1939 using a self-made Schm...
M46 and M47 are two open star clusters in the constellation Puppis. They are relatively close to each other in the sky and can be observed together in wide-field telescopes or binocular...