PHD2 Log Viewer 0.6

PHD2 Log Viewer by Andy Galasso is a companion analysis tool for PHD2 Guiding that turns raw guiding and debug logs into clear, actionable insights. Designed for astrophotographers and mount tuners, it helps you diagnose guiding issues, refine settings, and understand how your mount and environment affect tracking performance.

Key capabilities:

• Reads and organizes PHD2 guide and debug logs, grouping sessions and runs for quick navigation
• Visualizes guiding performance with time-series plots of RA/Dec error, total error, RMS, and guide pulse activity
• Highlights key metrics such as RMS, peak error, drift trends, and settling behavior
• Provides calibration analysis to review step sizes, orthogonality, and calibration quality across pier sides
• Displays star quality indicators (e.g., mass and SNR) to separate seeing effects from mount or setup issues
• Annotates important events like dithers, calibration, star-loss events, and meridian flips for context
• Aids troubleshooting of backlash, declination guiding, polar alignment error, and recurring tracking patterns

With an intuitive interface and focused diagnostics, PHD2 Log Viewer streamlines the process of interpreting guiding data so you can spend less time guessing and more time capturing sharp, round stars.

PHD2 Log Viewer is developed by Andy Galasso. The most popular version of this product among our users is 0.6. The name of the program executable file is phdlogview.exe.