binary stars

Note: The Alert Notice text below has been revised from the original version issued April 18, 2024.  - Elizabeth O. Waagen, April 19, 2024

Observers are also reminded that it is essential to use the comparison and check stars indicated for the photometry target. If they are too far apart to fit into the same field of view as the target, use PEP-style observing, that is, alternate images of variable, comp, and check.

April 22, 2024                                            REVISED VERSION

Note: The target table was edited to add the range.  -  Elizabeth O. Waagen, 18 June 2020

June 17, 2020

AAVSO Forum threads (scroll to the bottom of a thread for latest posts):
- Campaigns and Observation Reports: https://www.aavso.org/test-exposures-for-symbiotic-binary-candidates-campaign

Adrian B. Lucy (Columbia University) requests the assistance of AAVSO observers, and writes: