This is a great "answer" book for such questions as what a star test should look like, results from Ronchi tests, evaluating sky conditions, star-hopping, evaluation of different equipment, etc.
It is 376 pages and is Philip S. Harrinton's second edition.
This book is in good used condition (used but it's back is not yet broken).
I am asking $10 plus $2.50 media rate shipping in the con US.
PayPal is prefered or a Postal Money order.
Sorry, sale is pending (Thanks Rich)