Demo: The SPIRE Photometer Interactive Analysis Package

Schulz, Bernhard

The Herschel Common Science System (HCSS) (Ott 2010, Ott et al. 2006) is a substantial software package written in Java, that accompanied the development of the Herschel Mission (Pilbratt et al. 2010), supporting all of its phases. In particular the reduction of data from the scientific instruments for instrument checkout, calibration, and astronomical analysis is one of its major applications. The data reduction software is split up in modules, called "tasks". Agreed-upon sequences of such tasks form data reduction pipelines that deliver well defined standard products for storage in a web accessible Herschel Science Archive (HSA). In a perfect world this would be all that is needed. However, as astronomers and instrument scientists continue to characterise known instrumental effects and find new ones, astronomers already need to publish scientific results and may not have the time to acquire a sufficiently deep understanding of the scripting language that accompanies the data. There is a need for intermediate level analysis tools that offer more flexibility than rigid pipelines, but do not require the astronomer to master the full complexity of the Jython scripts that the pipelines encompass. The task framework within the HCSS and the highly versatile Herschel Interactive Processing Environment (HIPE) together with the rich set of libraries provide the necessary tools to put together GUI-based interactive analysis packages for the Herschel instruments. The SPIRE Photometer Interactive Analysis (SPIA) package proves the validity of the concept for the SPIRE instrument, breaking up the pipeline reduction into logical components, making all relevant processing parameters available in GUIs, and providing a more controlled and user-friendly access to the complexities of the system. The demonstration will show an example of how an astronomer would retrieve and work with a Herschel SPIRE photometer dataset using the task GUIs available through HIPE and SPIA.

References:

Pilbratt, G., et al. 2010, A&A, 518, L1

Ott, S. 2010, in Astronomical Data Analysis Software and Systems XIX, ed. Y.,

Mizumoto, K.-I. Morita, & M. Ohishi, ASP Conf. Ser., in press

Ott, S. Bakker, J., Brumfitt, J., et al. 2006, in Astronomical Data Analysis Software and Systems XV, ed. C. Gabriel, C. Arviset, D. Ponz, E. Solano, ASP Conf. Ser., 2006, 516

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