Opportunities for Joint SOT – Ground Based Observations Using NSO/Tucson Facilities J. Harvey, NSO

Current NSO/T Facilities McMath-Pierce SOLIS VSM GONG

McMath-Pierce and SOT McMath-Pierce Facility 1.52 m and two 0.81 m aperture telescopes Powerful grating spectrographs Emphasis on infrared and user observations Facility Instruments (used with spectrograph) Infrared Adaptive Optics System (IRAO) Near Infrared Magnetograph 1-5 micron (NIM-2) NSO Array Camera 1-5 micron (NAC) Observables Temperature, velocity, vector magnetic field in active region- sized areas using unique infrared diagnostics (He I, Fe I, Ti I, CO, MgH, etc.) photosphere to low chromosphere.

SOLIS VSM and SOT SOLIS VSM Facility 50 cm, f/6.6, full-disk, low-polarization spectropolarimeter 2300 x 1.13 arc sec, dual-beam slit spectrograph Equatorially mounted, driven N-S to scan Sun Liquid-crystal polarization modulators (46 and 23 Hz) Optimized for 630, 854 and 1083 nm spectral lines Daily full-disk observations 3 photospheric vector magnetograms (24 min each) 1 chromospheric longitudinal magnetogram (40 min) 1 deep photospheric longitudinal magnetogram (12 min) 3 helium 1083 nm spectroheliograms (12 min each) Time available for collaborative observations

SOLIS VSM and SOT SP Stokes I,Q,U,V spectra ParameterSOT SPSOLIS VSM slit size0.16 x 164"1.13 x 2300" scan range≤ 320"≤ 2300" spectral range nm – – spectral sample21.5 mÅ28 mÅ polarization noise10 -3 <10 -3 ‘normal’ step0.16" in 4.8 sec1.13" in 0.7 sec ‘normal’ scan160" in 83 min2300" in 24 min VSM faster for same area but 7X worse resolution -- useful for spatial and temporal context?

SOLIS VSM and SOT NFI photospheric longitudinal magnetogram ParameterSOT NFISOLIS VSM spectral line (nm) & area82 x 164"81 x 2300" pixel0.08"1.13" spectral samples4 x 90 mÅ128 x 28 mÅ scan time21 sec25 sec rms noise/pixel10 15 Mx VSM complementary but 14X worse resolution -- useful for spatial and temporal context?

GONG and SOT GONG Network, Instrument and Data 6 synchronized stations around the world 2.5 arc sec pixel full-disk images using nm Ni I Phase-shift interferometer modulated at 20 Hz 1/min intensity, velocity and longitudinal magnetogram Near-real time products (<24 hr) Synoptic maps from 10 min cadence LOS magnetograms Far side images from 1 min cadence low resolution velocity Later data products (>24 hr) Subsurface flow maps Full-resolution, 1/min intensity, velocity, magnetic field

NSO Policy and Solar-B “NSO is developing plans for support of Solar-B science objectives. We will develop a scheme for giving high priority to requests for coordinated observations at the Dunn Solar Telescope and McMath-Pierce Solar Telescope. Special requests for non-standard SOLIS observations will also be considered, and our Air Force partners have indicated that a similar policy will be available for the Optical Solar Patrol Network (O-SPAN) (formerly the Improved Solar Observing Optical Network, ISOON) telescope at Sacramento Peak.” -- S.Keil, March 2006 NOAO/NSO Newsletter

Sample Data

SOLIS VSM 2004 January 6

SOLIS VSM

Field strengthAzimuth in sky planeInclination to line of sight SOLIS VSM Vector Magnetogram

SOLIS VSM Photo/Chromo Magnetograms

SOLIS VSM

SOLIS VSM 1083 nm He I

SOLIS VSM Coronal Hole Map

GONG White Light Flare GONGTRACE WLBBSO HaTRACE 1600 A 19:43:03 – 19:44:03 20:02:03 – 20:03:03 20:20:03 – 20:21:03 19:43:17 20:02:30 20:20:40 19:43:56 20:02:26 20:20:56 19:43:46 20:02:59 20:21:08

GONG Flare Magnetic Field Change