1. bright red star in Taurus
luminosity
2. constellation known as the herdsman
astrolabe
3. cluster of stars in the face of Taurus
magnitude
4. brightness of a star
nebula
5. North Star located in Ursa Minor
summer
6. telescope which uses a system of lenses
refractor telescope
7. intensity of light
Bootes
8. telescope which uses a system of mirrors
Cassiopeia
9. best viewing season for Bootes
winter
10. best viewing season for Orion
Polaris
11. a queen in Greek mythology
Aldebaran
12. early navigational instrument
Hyades
13. gigantic clouds of dust and gas in space
reflector telescope
