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HINODE Operation Plan (HOP)

accepted on


 HOP No.

 HOP title

HOP 0118

Coordinated Observations with the SHAZAM Magnetograph

plan term


@ @


 name : DeForest @  e-mail : deforest[at]boulder.swri.edu

contact person in HINODE team

 name : Berger @  e-mail : berger[at]lmsal.com

 abstract of observational proposal
SHAZAM is a high speed / high sensitivity line-of-sight magnetograph based on the principle of stereoscopic spectroscopy. From 7-14 May 2009 the Stereoscopic High-Speed Zeeman Magnetograph (SHAZAM) will be observing at the Dunn Solar Telescope (U.S. National Solar Observatory / Sac Peak). The purpose of SHAZAM is to push the resolution limits of magnetoconvection studies as small as possible. In light of recent results showing that unresolved small scale processes dominate even the smallest features observable with Hinodefs approximately 0.3h resolution in Na-D (e.g. Lamb et al. 2008, APJ; Title et al. 2009, proc. Hinode-2) and in fact the energy balance of the entire dynamo (Parnell et al. 2009 APJ), it is imperative to make quantitative measurements of the field evolution at the highest possible spatial resolution. Operating at 617.3 nm at the 70-cm DST, SHAZAM may achieve as high as 0.22h resolution, collecting 3-10 single-frame magnetograms per second. (Later runs using a blue line at the SST may achieve full 0.1h resolution). Because SHAZAM uses novel optical principles, it is important to compare results with an instrument that is comparatively well understood and has comparable resolution (Hinode NFI). Hinode/NFI has collaborated with SHAZAM prototype observations before; this is the first SHAZAM observation with a complete instrument (two-polarization, three-camera optical setup).

 request to SOT
NFI Na-D IVDG are requested as gground truthh in the region of study. 4k x 2k, 2x2-summed observations are requested. 60–90 second cadence is desirable but not required; as the primary purpose is to compare individual frames with the SHAZAM inversions, and movie collection is only secondary; e.g., 300-600 second time resolution is OK if telemetry is very sparse. SP Normal map of 60" scan width (1-side CCD) is requested once per day if telemetry allows. If telemetry is sparse, then Fast Map is acceptable.

 request to XRT

 request to EIS

 other participating instruments

Observing Window: 14:30-17:30 UT (6days)

Target: We are interested in quiet Sun, so the default target is disk center unless an active region encroaches. Once a quiet Sun sequence has been acquired, other targets of interest include plage and a field including a sunspot. Final target selection will be carried out by e-mail, consistent with known Hinode operational lead times.

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