Data reduction software for the Gemini high resolution optical spectrograph

Ireland, Michael; White, Marc; Bento, Joao; Farrell, Tony; Labrie, Kathleen; Luvaul, Lance; Nielsen, Jon G.; Simpson, Chris

Data reduction software for the Gemini high resolution optical spectrograph

Date

2018

Authors

Ireland, Michael

White, Marc

Bento, Joao

Farrell, Tony

Labrie, Kathleen

Luvaul, Lance

Nielsen, Jon G.

Simpson, Chris

Publisher

Society of Photo?Optical Instrumentation Engineers (SPIE)

Abstract

The data reduction software for the Gemini High Resolution Optical SpecTrograph (GHOST) presents a number of unusual challenges. Star light from one or two objects and simultaneous sky is collected in integral field units rather than a slit or well-separated fibers. When used with binning, individual fibers are not resolved, and the optimal pixel weighting is derived from a simultaneous slit viewing camera. We describe the data reduction approach taken, including testing using an optical physics-based data simulator, and an object-oriented and modular approach to spectral extraction that fits within the Gemini recipe system, DRAGONS, using AstroConda.