| Presentation Title: | The GRIPS Imaging Concept |
| Author(s): | Pascal Saint-Hilaire
Albert Shih
Gordon Hurford
Meredith Wieber |
Abstract:
The Gamma-Ray Imager/Polarimeter for Solar flares (GRIPS)
project in its current form is a NASA high altitude balloon payload that
first flew from Antarctica in January 2016. GRIPS observes the Sun from
20 keV to 10 MeV with germanium strip detectors (few keV resolution). It
has a single imaging grid yielding 12.5" angular resolution over the
full sun and over its whole energy band. GRIPS is particularly well-suited to observing gamma-ray lines emitted by flare-accelerated ions, one of the few existing diagnostic of such. After a brief overview of the GRIPS, we present its novel imaging technique (monogrid imaging with pixelized detectors), and in particular how to compute back-projected images and Fourier components of the
source image (visibilities).