- Astro-imaging Exposure Calculator from Glenn LeDrew of the Starry Room
Wholesale prices are available on request.
A 15 cm (6 inch) diameter circular "slide rule" that allows a quick calculation of you imaging exposure.
You input - the object type
It may be used to determine the exposure for the bright planets and faint galaxies. It covers an exposure range of 1 million (15 magnitudes)! You may down load the User's Manual for the calculator here (770 k). You may also download additional tips and advice on the use of the Whiz Wheel here (1.3 meg).
Price: $25 ea. plus about $12 shipping and handling (calculated in PayPal).
P.O. Box 79, Rideau Ferry, Ontario, CANADA, K0G 1W0