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Opportunities for Joint SOT – Ground Based Observations Using NSO/Tucson Facilities

Explore the opportunities for joint spectroscopic and magnetographic observations using NSO/Tucson Facilities: McMath-Pierce, SOLIS VSM, GONG, and SOT.

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Opportunities for Joint SOT – Ground Based Observations Using NSO/Tucson Facilities

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

  2. Current NSO/T Facilities McMath-Pierce SOLIS VSM GONG

  3. 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.

  4. 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

  5. SOLIS VSM and SOT SPStokes I,Q,U,V spectra VSM faster for same area but 7X worse resolution -- useful for spatial and temporal context?

  6. SOLIS VSM and SOT NFIphotospheric longitudinal magnetogram VSM complementary but 14X worse resolution -- useful for spatial and temporal context?

  7. GONG and SOT • GONG Network, Instrument and Data • 6 synchronized stations around the world • 2.5 arc sec pixel full-disk images using 676.8 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 from10 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

  8. NSO Policy and Solar-B “NSO is developing plans for support of Solar-B science objectives. Wewill developa 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

  9. Sample Data

  10. SOLIS VSM2004 January 6

  11. SOLIS VSM

  12. Field strength Azimuth in sky plane Inclination to line of sight SOLIS VSM Vector Magnetogram

  13. SOLIS VSM Photo/Chromo Magnetograms

  14. SOLIS VSM

  15. SOLIS VSM 1083 nm He I

  16. SOLIS VSM Coronal Hole Map

  17. GONG TRACE WL BBSO Ha TRACE 1600 A 19:43:03 – 19:44:03 19:43:17 19:43:56 19:43:46 20:02:03 – 20:03:03 20:02:30 20:02:26 20:02:59 20:20:03 – 20:21:03 20:20:40 20:20:56 20:21:08 GONG White Light Flare

  18. GONG Flare Magnetic Field Change

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