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Phd2 user guide PHD v User Guide January CTable of Contents Table of Contents Introduction Main Screen Basic control Menus Status Bar Using PHD Guiding Equipment Connection Camera Selection Support for SBIG dual-chip cameras Mount Selection Aux Mount Sele

PHD v User Guide January CTable of Contents Table of Contents Introduction Main Screen Basic control Menus Status Bar Using PHD Guiding Equipment Connection Camera Selection Support for SBIG dual-chip cameras Mount Selection Aux Mount Selection Adaptive Optics and Rotator Selections Simulators Equipment Pro ?le Exposure Time and Star Selection Automatic Calibration Conventional Mounts Adaptive Optics Devices Guiding Dark Frames and Bad-pixel Maps Introduction Dark Frames Bad-pixel Maps Defect Maps Reusing Dark Frames and Bad-pixel Maps Visualization Tools Overlays Graphical Display Stats Star Pro ?le and Target Displays Adaptive Optics AO Graph Dockable Moveable Graphical Windows Advanced Settings Global Tab Camera Tab Guiding Tab Algorithms Tab Other Devices Tab Guide Algorithms Guiding Theory Guide Algorithm Parameters Tools and Utilities Manual Guide Auto-Select Star Calibration Details PHD Server Dithering Logging and Debug Output Drift Align Lock Positions Comet Tracking Guiding Assistant Managing Equipment Pro ?les Advanced Settings for the Simulators Multiple Program Executions Keyboard Shortcuts Table of PHD keyboard shortcuts Trouble-shooting and Analysis Calibration and Mount Control Problems Display Window Problems Camera Timeout and Download Problems CPoor Guiding Performance Alert Messages Log Analysis Guiding Log Contents Problem Reporting CIntroduction PHD is the second generation of Craig Stark's original PHD application PHD has become a ?xture of the amateur astronomy community with more than a quarter million downloads From its inception it has successfully embraced three seemingly con icting objectives For the beginning or casual imager to deliver ease of use and good guiding performance out of the box For the experienced imager to deliver sophisticated guiding algorithms extensive options for tuning and broad support for imaging equipment For all users to consistently exhibit a commercial level of quality while being available free of charge In order to extend PHD to more platforms and further expand its capabilities Craig released his program to the open-source community and PHD is the direct result of that generosity It has been substantially restructured to make it more extensible and supportable going forward Moreover the initial release of PHD already includes a substantial number of new features and re ?nements while retaining all the core strengths of the original Users of the new PHD can be con ?dent it will remain committed to the three objectives that made the original application so successful CMain Screen The PHD main window is designed for ease of use and clarity Its intent is to support a quick and natural sequence of interactions to start and control guiding The basic steps for doing this are as follows Connect to your guide camera and mount Start a sequence of guide exposures to see what stars are available in the ?eld of view Choose a guide star and calibrate the guider Continue guiding on the target star while using various display tools to see how things are going Stop and resume guiding as necessary The majority of the screen is taken up by the display of the star ?eld from your guide camera The display is automatically adjusted for size brightness and