Reply To: ASTAP

Forums Variable Stars ASTAP Reply To: ASTAP

Dr Paul Leyland

I don’t (yet) use ASTAP but thanks for drawing it to my attention. I will take a look.

Russ Laher’s Aperture Photometry Tool, APT, is my tool of choice. Written by a professional at the ZTF for professionals and amateurs alike it does a very good job very easily. It produces CSV format output which is easy to convert to a BAA-VSS spreadsheet. A script to do just that is available from me on request.

APT is available from and there’s a Wikipedia article at

A particularly nice feature of APT is that the apertures can be elliptical, so tracking errors can be tolerated better than with purely circular apertures.

For plate solving I use a local installation of with the Gaia DR2 catalogue.