@book{21306,
	author = {Hubbell, Gerald R.},
	title = {Scientific Astrophotography},
	publisher = {Springer New York},
	year = {2013},
	series = {The Patrick Moore Practical Astronomy Series},
	address = {New York},
	url = {http://doi.org/10.1007/978-1-4614-5173-0}
}