Download PHD2

If you are already using PHD1, note that PHD2 installs separately from PHD1 so you can have both applications installed at once. Installing PHD2 will not affect your PHD1 installation or settings.

We also provide development snapshot builds containing the latest bug fixes and enhancements. These builds may not be as well tested as the general releases, but we would welcome your help testing them out.

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 the latest Gemini ASCOM Driver, Version 1.0.56.0 or newer.

Looking for a Linux package? 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.

v2.6.5

30 April 2018

New Static Polar Align tool and Polar Drift tool
New tool to upload log files for review (Help > Upload Log Files)
Improved Backlash compensation with additional controls and improved backlash measurement in the Guiding Assistant
New Profile Wizard improved detection of properties of connected gear
Improved handling of camera binning and mount guide speed changes
Dither settling now ignores dec distance when dec guide mode is None
Some minor UI tweaks like more explicitly labeling pixels vs arc-seconds units, showing help info in status bar as menu items are highlighted, and layout fixes for high resolution displays
Remove modal dialog boxes from most camera connections
Allow star auto-selection to select stars closer to the edge of the frame
Altair Cameras: update SDK to version 20_12_2017
Atik Cameras: binning support added
ZWO Cameras: updated Windows SDK to V1.13.1.9
Guide log enhancements (additional logging)
INDI fixes
Server API additional methods
Updated translations - French, German, Russian, Traditional Chinese

Download PHD2

v2.6.5

Older Builds