2024-08-22T01:07:32.484887Z http://sot.lmsal.com Mr. Sam Freeland Lockheed Martin Solar and Astrophysics Laboratory (LMSAL) http://www.lmsal.com Lockheed Martin ATC, 3251 Hanover St., Palo Alto, CA 94306 null null HINODE SOTSP Arikawa Nishimoto DeRosa (RCO) 432 HOP432 (with SolO/PHI) Quiet Sun QS QS 1 20220322_100904 577 604 584 1 47 120 6 2 1 0 1 21 2009 342 2.85 768.018 38.474 27.104 162.304 2022-03-22T10:09:04.000Z 2022-03-22T10:40:05.000Z 768.018 38.474 Solar Orbiter Polarimetric and Helioseismic Imager (SO/PHI) co-observations around perihelion passage Normal map, 19"x162", Q75/65, 2-side, 3 rpts Coordinated observations with the Solar Orbiter (SO) Polarimetric and Helioseismic Imager (PHI) High-Resolution Telescope (HRT), close to SO perihelion in the second remote sensing window (RSW2) of the first orbit of SO Nominal Mission Phase (NMP) that will take place in early March 2022. One of the main scientific opportunities offered by SO is stereoscopic observation in conjunction with Earth- or near-Earth observatories. The difference in viewing angle bears important consequences on the possibility of comparing and merging such observations, as the optical path from the two viewpoints can be very different. In order to assess the general feasibility of stereoscopic observations, a thorough comparison of the spectropolarimetric properties of Hinode/SOT-SP and SO/PHI-HRT is necessary.