@book{20915,
	author = {Cudnik, Brian },
	title = {Faint Objects and How to Observe Them},
	publisher = {Springer New York},
	year = {2013},
	series = {Astronomers' Observing Guides},
	address = {New York},
	url = {http://doi.org/10.1007/978-1-4419-6757-2}
}