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HINODE Operation Plan (HOP)

accepted on


 HOP No.

 HOP title

HOP 0111

Filament and emerging flux, prominence and cavity

plan term


@ @


 name : Schmieder, Heinzel, Aulanier @  e-mail : brigitte.schmieder[at]obspm.fr

contact person in HINODE team

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

 abstract of observational proposal
This HOP seeks to further understand the formation of  filament channel and the destabilization of filaments by emerging flux. What is the role of the magnetic field on small and large scale when observed on the photosphere? What tells us the dynamics of the filament body and feet? When viewed at the limb, how the filament looks-like  according its angle versus the meridan? How can we explain the cavity in terms of the different existing  magnetic models  in arcade or like flux tubes. How these models are fitting with the observations? What are the physical parameters of cavities.

 request to SOT
A. On-disk Filament Observations
FG:    NFI: H-alpha line-center + Na I 589.6 nm shuttered IVDG, 2k x 2k, 2x2 sum
 BFI:  G-band 403.5 nm + Ca II 396.8 nm H-line, 2k x2k, 2x2 sum.
 Cadence = 40/60 seconds, depending on telemetry allowance.
SP:  Fast Map 100h x 80h (sub-slit readout) scan. Cadence: repeat once
per 60/90 minutes.  

B. Off-limb Prominence Observations.
FG:   NFI: H-alpha 208mA DG, 1408x1408, 2x2 sum, 500 ms exposure.
BFI: Ca II H-line, 2K x 2K, 2x2 sum, 500 msec exposure.  ROI shift for off-limb.  
Cadence = 30 seconds.
Prog. 0x01bf

 request to XRT
Filters and exposure times:
Al-mesh (8 sec)
Al-poly (12 sec)
C-poly (16 sec)
Ti-poly (16 sec)
Al-poly + Ti/poly (23 sec)
thin Be (65 sec)

Cadence: 5 min
Compression: DCPM (lossless)
FOV: 768x768
Binning: 2x2

Note: Long exposure times are requested, but they can be shortened if bright features exist on the disk and safety of the instrument is an issue. Cadence can be lengthened to ~10 minutes if necessary for telemetry.

 request to EIS
Study 000310: ACRONYM: prom_rast_v1

prom_rast_v1 consists in one raster taking spectra at 80 positions with 1"" steps, using the 1"" slit, with 50s exposures at each position. It runs in 1h14min, therefore it can be easily inserted in the EIS observing plans. The window height in the Y direction is taken to be 128 pixels, which is sufficient to cover the area occupied by our type of target. JPEG98 compression is used to lower the telemetry requirements. The choice of the 1"" slit allows us to aim for maximal spatial and spectral resolution. We observe in 25 spectral windows to have a wide range of lines formed at different temperatures, and allowing several density-sensitive line ratios to be used for plasma diagnostics.

ACRONYM: prom_rast_v1
TARGET: active or quiescent filament / prominence
RASTER: scanning
SLIT: 1""
FOV: 81""x128""

The line list is the following:
ID        : 149
Acronym   : prominence_lines
Author    : Nicolas Labrosse
Date      : 18-Sep-2008
num Lines : 25

0  180.40 p Fe XI
1  184.24 p Fe X
2  185.21 p Fe VIII
3  186.74 p Fe XII
4  188.23 p Fe XI
5  191.27 p S XI
6  192.82 c Ca XVII
7  193.52 p Fe XII
8  194.94 p Fe VIII
9  196.65 p Fe XII
10 202.04 p Fe XIII
11 203.83 p Fe XIII
12 256.32 c He II
13 257.26 p Fe X
14 258.37 p Si X
15 261.04 p Si X
16 262.98 p Fe XVI
17 264.23 p S X
18 270.40 p Mg VI
19 272.01 p Si X
20 274.20 p Fe XIV
21 275.35 p Si VII
22 277.13 p Si X
23 278.39 p Mg VII
24 280.75 p Mg VII

Use/Instructions to planners:
Align with SOT. Adjust repeats to fill available time slot.

 other participating instruments
TRACE, SoHO/SUMER and CDS, Stereo, Meudon Solar Tower, Ondrejov, Bialkow, THEMIS

Observing Times: SUMER campaign period (23/04-29/04 2009)
Three hours between 07:00--12:00 UT corresponding to 09:00--14:00 local time when the Meudon or Canaries THEMIS  seeing is optimal.

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