PUPPIS
(April schedule)

     Puppis constellation is winter constellation and its northern part is in best position for evening observing in February and March when it is very low on the southern sky. The southern part never rises over the horizon when observed from our location (latitude 44 degrees North).
     It rises quickly on the southeastern sky in February and quickly culminates on the southern sky. In the evenings in February and March is in best position for evening observing when it is very low on the southern sky. 
     We will observe it in April early in the evening when it is very low on the southwestern sky and try to catch it before it sets behind the horizon.

Double and multiple stars

     k Puppis - Its name is Markeb. It is optical double star and not a true binary star system. Components are k1 and k2 with visual magnitudes of 4.5 and 4.7 and separated about 10 arc seconds on the sky. Their distance from Earth is 450 light years for k1 and 460 light years for k2. Their combined magnitude is 3.8. k1 Puppis is hot main sequence star and k2 Puppis is hot sub-giant star. 

Deep sky objects
(can be observed only from dark location outside of the city)

     M46 - It is an open cluster of stars with visual magnitude 6.1. With diameter about 30 light years it lies about 5,500 light years away. It is about 300 million years old. Contains a lot of stars and is nice object to observe in a telescope. While we observe the cluster, in the same field of view is the planetary nebula NGC 2438, and it looks like it is part of the cluster, but study shows that in reality it is closer to the Earth than the cluster. The nebula is about 3,000 light years away with visual magnitude 10.8. The central star of the nebula was the star which produced the nebula, and its visual magnitude is 17.7 and it is white dwarf with surface temperature of about 75,000 K. 
     M47 - It is an open cluster of stars with visual magnitude 4.2 and about 1,600 light years away. Its diameter is about 12 light years. About 80 million years old.
     M 93 - It is an open cluster of stars with visual magnitude 6.0 and about 3,500 light years away. About 100 million years old with diameter about 20 light years.