Title: Calcium II Monitoring Program at the National Solar Observatory
Author: Stephen L. Keil
Affil: National Solar Observatory
Email: skeil@sunspot.noao.edu
Authors: Erica Raffauf
Affils: Indiana University
Abstract: We compare spatially resolved Calcium II K spectroheliograms and disk integrated Ca II K spectra. Both data sets are obtained at the Evans Solar Facility at the National Solar Observatory Sacramento Peak on a daily basis. An understanding of the relationship between the spatially resolved and disk integrated data can aid in interpreting spatially unresolved solar observations and solar irradiance studies in which the Ca II K line serves as a ground-based proxy for solar UV and EUV lines. We present correlations between plage parameters (area and intensity) calculated from the spectroheliograms and various spectral line parameters computed from the disk integrated spectra.