In recent weeks I started a course on Photometry run by Boyce Research Initiatives and Education Foundation (http://boyce-astro.org/). In particular, I'm currently taking their B.R.I.E.F Introduction to Photometry and Exoplanets. I started with the IntroSTARS™ online course for the astrophysics fundamentals needed to enroll in all Boyce-Astro seminars and programs. The aim of my current course is to train folks for exoplanet transit monitoring.
It soon became clear the equipment/software I had for EAA suited photometry well. All I needed to do was add a processing tool - AIJ appeared very comprehensive. Several nights ago, I imaged my first variable star BH Aur - the period is approx. 0.45 days. I took 6sec x 86 images at one frame every three minutes, covering a three hour period with the hope of catching some of the 1.5 mag change reported for this variable. I processed the data in AIJ, selecting five comp stars varying in magnitude from 10.6 to 12.6.
The attached image shows a partial light curve for BH Aur, compared to the three closest magnitude comp stars. All five comp stars exhibited flat light curves, while that for BH Aur clearly demonstrates the slow (relative) fading of the star during this part of its period.
I'm looking forward to participating in this branch of the hobbie. Any pointers would be greatly appreciated.