2018-04-21T12:58:30.000Z http://sot.lmsal.com Ted Tarbell LMSAL http://lmsal.com 3251 Hanover Rd, O/ADBS, B/252, Palo Alto, CA, 94304 +1-650-424-2400 tarbell@lmsal.com Hinode SOT Demoto Suematsu Suematsu 321 321 null HOP 321 sunspot SS SS NOAA12706 Sunspot 5 -736 83 0 0 2018-04-21T10:57:00.000Z 2018-04-21T12:30:00.000Z -736 83 Observational Exploration of the Height Variation of Magnetic Fields and Chromospheric Dynamics In and Above Umbral Dots HOP 321 Sunspot, Full Res, 30x81", repeats Sunspot observations are made with GREGOR to explore the height dependence of the mangnetic field vector in the deep photosphere of umbral dots, and to search for any chromospheric response to the umbral dot phenomenon.