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12 May 2023 at 9:41 am #617281
Mr Ian David Sharp
Personally I like the AAVSO charts and lists of comparison stars because it’s easy to query via my Python code via the AAVSO API. I combine that with SIMBAD/VIZIER data to get other parameters of the target star and I can then create a good list comparison stars for ensemble photometry. I just live with the chart ID warning when I upload to the BAA database.