DSLR Photometry

At present there are three AAVSO CHOICE Photometry courses, two for monochrome CCD/CMOS cameras and one for DSLR cameras. These courses require daily commitments of time from each student to complete successfully. This includes time taking and processing images as well as participation in discussion questions on the forum. Students will be asked to share their results with the instructor and with other students. An “open book” final test is required from each student.

Thanks to a fantastic volunteer effort by Mark Blackford, the DSLR Observing Manual has been revised and improved.

To read more about it and download a copy (free-of-charge) please click here:

DSLR Observing Manual - Version 1.4

Be sure also to take a look at Mark's Photometry Software Calibration and Photometry Tutorials available on the website for the first time.

Thank you Mark!

A Greek translation of The AAVSO DSLR Observing Manual is now available for download.

Many thanks to Mr. Stelios Kleidis for his tremendous volunteer effort in creating this excellent translation.

The AAVSO has two new observing manuals for our instrumental observers: the recently released AAVSO DSLR Observing Manual, and the newly-published AAVSO Guide to CCD Photometry. 

The Fall Schedule of CHOICE courses has been set. Most courses are available to AAVSO members AND the general public.  Class size is limited to 15 people, so sign up as soon as you can to save a seat.​ Registrations are available on a first-come, first-serve basis, and are handled through our online store. The fee for AAVSO members is $30.00. Non-members pay $50.00.

How To Use VPHOT (August 11-September 5) Class Full- Registration Closed