1.
Astronomical Photometry, Text and Handbook for the Advanced Amateur and Professional Astronomer
by Hendon, Arne, Kaitchuck, Ron
ISBN: 9780943396255
List Price: $29.95
2.
Investigat.in Observational Astronomy
by Christiansen, Wayne, Kaitch...
ISBN: 9780882520544
List Price: $24.75