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Jim Braatz' primary responsibilities are to manage and support the Green Bank installation of AIPS++, support GBT operations, develop software for analysis of GBT commissioning and continuum observations, and assist with single-dish spectroscopic applications. Specifically, Jim worked on the following tasks during this cycle:
Commissioning of the GBT using the prime focus receivers and the S-band Gregorian receiver began this cycle.
Jim participated heavily in the commissioning work by providing software for analysis and participating in the observing and planning.
Development of automated routines (GOpoint) to handle pointing updates were written and incorporated into the online GBT control system. Early results show that the software is performing well and pointing of better than 6 arcsec was being achieved with prime focus
Development of the DCR tool continues. As this is the primary software tool for analysis of GBT commissioning data, its development this cycle has been mostly in response to the needs of that process. The CLI interface was made to operate seamlessly with the (more limited) GUI, allowing for easy scripting. Functions for analyzing, recording, and displaying results of pointing observations were stressed.
Functions to handle focusing scans were written as well. A number of specialized analysis routines were incorporated to simplify common procedures.
A function to calculate and plot sidelobe data was incorporated.
Soon after commissioning began, the need to optimize the DCR tool and GOpoint software became evident. To streamline the procedures, it was necessary to separate DISH from the DCR tool and optimize the data mining from the measurement set. The tool now runs faster by a factor of a few.
Assisted in early processing and analysis of Spectral Processor commissioning data.
Began managing the weekly AIPS++/GBT meetings, at which the relevant staff in GB, CV, and the AOC discusses the requirements and priorities of AIPS++ single dish software development, particularly as it relates to GBT commissioning and early science.
The AIPS++ system continues to be widely used in Green Bank, especially in support of GBT operations and analysis but also in general science applications. Jim has prepared scripts, personal instruction, and given other assistance to engineering and science staff. While the documentation in several areas remains under development, this personal instruction requires a considerable effort.
Jim continues in his responsibility for correcting defects and making enhancements to the pgplotter routines. Several improvements relating to the interactive editing feature and line masking capabilities were checked in this cycle.
Reviewed and tested DISH and proposed a new CLI to aid in the processing of online data and to simplify scripting. This has been adopted as the ssa package (written by Joe McMullin).