Download PHD2

Development snapshots

We recommend running the latest development snapshot build to get the latest bug fixes and enhancements. The development builds are updated more frequently then the general releases below.

Upgrading from an earlier version of PHD2

Just download and run the installer. There is no need to uninstall the older version first. If you do uninstall the older version, you will remove all your profiles and settings.

Note for Gemini/Gemini2 ASCOM users: PHD2 requires Gemini ASCOM Driver Version 1.0.56.0 or newer.

Linux packages

Patrick Chevalley has PHD2 Ubuntu packages hosted on Launchpad. If you are using another Linux distro, you can build PHD2 from source: Building PHD2 on Linux.

v2.6.7

4 February 2020

Mac: 64-bit version of PHD2 for macOS Catalina
PHD2 now produces a single debug and guide log per night rather than a set each time the app is launched
Added checks for specific mount driver quirks
Improvements to the log upload tool
Altair cameras: update to SDK version 38.15031.2019.0706 (Windows)
iOptrion iGuider camera support added
Omegon Pro camera selection added
QHY cameras: update SDK to version V2019.11.15.0 (Linux) and V20191115_0 (Mac)
ZWO cameras: update SDK to version V1.14.1108 (windows, mac, linux)
INDI camera improvements
Workaround for imaging apps which fail to un-pause PHD2: stop button now un-pauses guiding
Updated French, Korean, Russian, Traditional Chinese translations
New Japanese translation of the help file
Automatically update guide settings for changes to binning, pixel size and focal length
New button on the main toolbar for auto-selecting a star
New option to enable/disable audible beep for lost star
Improvements and clarifications of various messages in the application
Changing the Dec Flip calibration option now triggers a new calibration
Guiding Assistant: improved guide setting recommendations
Equipment profile wizard improvements, including specialized settings for mounts with high preceision encoders
New server methods and notification updates
Updated Help file
Debug log and guide log improvements