AAVSO Observer Code
CWD
Affiliation
American Association of Variable Star Observers (AAVSO)
Full Name
David Cowall
Location
Willow St., PA, US
Background/Interesting Fact
Board Member
Occupation - retired physician
OTHER HOBBIES - scuba diving, sailing, travel, chess
ASTRONOMY - I use a 100mm refractor and the AAVSOnet for photometry of variables, especially BCEP (JAAVSO Volume 48, 2020) and SXPHE (JAAVSO Volume 43, 2015) stars.
Occupation - retired physician
OTHER HOBBIES - scuba diving, sailing, travel, chess
ASTRONOMY - I use a 100mm refractor and the AAVSOnet for photometry of variables, especially BCEP (JAAVSO Volume 48, 2020) and SXPHE (JAAVSO Volume 43, 2015) stars.
CHOICE Courses Completed
| CCD Photometry, Part I | 2013-05-01 |
| Variable Star Classification and Light Curves | 2014-05-14 |
| How to use VPhot | 2014-09-11 |
| CCD Photometry, Part II | 2015-04-21 |
| Variable Star Classification and Light Curves (instructor) | 2015-05-07 |
| How to use VSTAR | 2015-08-07 |
| CCD Photometry, Part II (instructor) | 2015-11-04 |