Answer:

starmap

Answer	Crossword Clue
STARMAP	Telescope user's aid
STARMAP	Astronomer's reference
STARMAP	Planetarium souvenir

STARMAP	Astronomer's aid
STARMAP	Galaxy locator
STARMAP	Navigational aid
STARMAP	Chart of the heavens
STARMAP	Constellation reference
STARMAP	Cancer locator?
STARMAP	Guide to studying the night sky
STARMAP	Collection of high lights?