INAF-OAR has operated the Rome/PSPT (Rome/Precision Solar Photometric Telescope) since July 1996. This telescope, realized in the framework of the RISE projects by the National Solar Observatory (New Mexico, USA), aims to monitor the Sun’s activity in order to understand the processes responsible for solar irradiance variations. This telescope gives whole-disk images of the Sun at four different wavelengths, CaII K (393.3 nm), Blue (409.4 nm), Red (607.2 nm) and G-band (430.6 nm), characterized by a nominal spatial resolution of ~1arcsec/pixel (which corresponds to about 750 km upon the Solar surface), and a photometric precision of the order of 0.1% per pixel.
The daily observation program with the Rome/PSPT telescope includes the acquisition of individual and long sequences of images at fixed intervals to monitor the Sun’s activity and a series of images acquired to apply instrumental calibrations.
All the images acquired during the telescope’s activity are stored in JPG format in the archive accessible at the following link:
https://www.oa-roma.inaf.it/pspt-daily-images-archive/
Read more at: https://www.oa-roma.inaf.it/pspt-in-rome/