Question

(c) Is the NGC 4440 galaxy observable from the Calar Alto Observatory?

The object NGC 4440 is a galaxy located in the Virgo Cluster at the following equatorial coordinates (J2000): 12h 27m 53.6s (right ascension), 12◦17’ 36’’ (declination). The Calar Alto Observatory is located in Spain at the geographical coordinates 37.23◦N and 2.55◦W.

Answer 1

To be observable, the object must satisfy

$−(90^\circ−φ)< δ$

$-90^\circ + 37.23^\circ < 12^\circ 17'$

This is true, therefore the NGC 4440 galaxy is observable from the Calar Alto Observatory.