PHD2 is telescope guiding software that simplifies the process of tracking a guide star, letting you concentrate on other aspects of deep-sky imaging or spectroscopy. It has become the favorite open source guiding software out there and is very capable.

  • Easy-to-use, “push here dummy” guiding for beginners
  • Sophisticated guiding and analysis tools for experienced users
  • Extensive support for commonly-used equipment
  • Easy upgrade/co-installation with PHD1, including many new features
  • Available for Windows, Mac, and Linux
  • Extensive online help and responsive product support
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