Point-Spread Functions for the Near Ultraviolet Channel of the Interface Region Imaging Spectrograph (IRIS)
Abstract
We present point-spread functions (PSFs) for the near ultraviolet (NUV) spectrograph channel of the Interface Region Imaging Spectrograph (IRIS). The hard edge terminus of the 2016 Mercury transit of the Sun is used to measure the PSFs near instrument center field of view using an iterative semi-blind deconvolution method. The resulting PSFs exhibit an asymmetrical core with broader wings when compared to the theoretical diffraction limited PSFs. Deconvolution of our PSFs from the original Level 2 images produces images with improved stray light characteristics and increased contrast.
- Publication:
-
AAS/Solar Physics Division Abstracts #48
- Pub Date:
- August 2017
- Bibcode:
- 2017SPD....4811701C