Jame kook at post 10 in the attached link https://www.aavso.org/content/best-software-very-accurate-differential-photometry-work
Maybe what you need.
Regards Andrew
British Astronomical Association
Supporting amateur astronomers since 1890
Supporting amateur astronomers since 1890
Jame kook at post 10 in the attached link https://www.aavso.org/content/best-software-very-accurate-differential-photometry-work
Maybe what you need.
Regards Andrew