JSPWiki: Study4LowDataVolume

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This page lists several typical examples of EIS studies created for use under the new Hinode data-volume management scheme.

If you want more general guidance about operational restrictions on observing with EIS using the new antenna, then just go over to our Wiki page on Observing with EIS and the S-band Antenna.

There are now[1] almost 290 pre-defined studies (including both science and so-called engineering studies) already available if you want to make observations with EIS.

The details of each study, such as line list, window size, exposure time, etc. can be accessed online at the Hinode/EIS website

(MSSL). This is a very powerful tool where you can not only look up a Study by its ID number, but also immediately access all the FITS files created by that study. That way you can take a look at the real data and see whether it's appropriate to what you want to do!

Alternatively you can use the EIS planning tool, which is distributed within Solarsoft.
[#1] as of 2008 Jun 25

To run the EIS Planning Tool, first ensure that you've followed the guidelines for its set-up

. To make sure that you're pointing at the official studies database (OSDB), first type

print,fix_zdbase(/eis)

The easiest thing to do is to look up a study the website. But to look up a study in SolarSoft just to use the command

eis_xstudy

There, you can look at the details of the rasters (i.e. component parts that make up a study). Go to EisXstudy for a walk-through on how to use this interface.

On the Hinode/EIS website there two especially relevant and useful webpages:

Studies Available for EIS

This page lists all studies created so far for EIS observation, and enables user to view deatils of each study. When planning your own observation with EIS, it is recommanded to choose those suitable studies from the list directly rather than to design your own studies (unless been instructed to do so by EIS team).

Warning: EIS studies with IDs below #250 should not be used under the new Hinode data-volume regime!

Tips: on this page user can click right-side button of each study to search the associated eis fits files (i.e. generated by that study) and have a quick look of thumbnails of the fits files. This may help user to choose the right study and check how the results (eg. intensity, velocity maps) obtained by the study probably like.

EIS Study Use Summary

This page is a summary of EIS as-run database. It shows how frequently and when a study was run by EIS. It would be useful when you'd like to search popular studies or simply check when/whether your study has been run.

Tips: user can view the summary based on different targets such as Active Region (AR), Quiet Sun (QS), etc, and user can sort the summary by study ID or running times.

EIS Daily Plan can be accessed from DARTS website

, where you may find lots of text files. These files just list EIS daily activities along EIS Observing Timeline

On Hinode Daily Events Page

, you can check all three instruments' (EIS, SOT, XRT) daily events.

One thing you'd probably like to have a look is DR allocation table. For example, on 2008/06/21 (Sat):

This will give you a rough idea of the allocated EIS volume for a three-day plan.

Examples of EIS typical studies under the low data-volume restriction:

Active Region

PRY_footpoints_lite (Study 000241)

Study 000241:

ACRONYM: PRY_footpoints_lite

Objective:
--------------------
This is a variation on the study PRY_footpoints_v2 designed for
periods when EIS has a *low data rate*. The study has a wide range of
lines and diagnostics and is suitable as a general purpose AR study.

Study summary
-------------------
TARGET:   		Active region
EXPOSURE TIME:  	30s
SLOT:     		2"
Raster Type:            Scan
FOV:      		100"x240"
ESTIMATED CADENCE:  	28m16s
Compression:            DPCM
DATE Volume:  		53.38 Mbits
Spectral Lines:         FeX,184.33;FeXII,186.75;FeXI,188.35;FeXXIV,192.01;CaXVII,192.82;FeXII,195.00;FeXIII,202.04;FeXIII,203.83;OV,248.46;HeII,256.40;FeXVI,262.98;MgVI,268.99;FeXIV,274.20;SiVII,275.35;MgV,276.58;MgVII,278.39;MgVII,280.75;FeXV,284.16

USAGE:
--------------------
If the contacts allow a period of high data rate, please supplement
this study with PRY_footpoints_v2.

As a context raster, please use PRY_slot_context (duration: 3min).

WARNING:

None

For obtained fits files by this study, please visit Studies Available for EIS

page and click right button for study #241

Quite Sun

tr_bright_lo (Study 000251)

Study 000251:

ACRONYM: tr_bright_lo

Objective:
--------------------
To observe small scale QS brightenings (blinkers, explosive events,
nanoflares, bright points etc.)

Pointing:
--------------------
A patch of QS near to disk centre

Study summary
--------------------
TARGET:   		Quiet Sun
EXPOSURE TIME:  	30s
SLOT:     		2"
Raster Type:            Scan
FOV:      		20"x144"
ESTIMATED CADENCE:  	5m57s
Compression:            DPCM
DATE Volume:  		1.49 Mbits
Spectral Lines:         FeXII,186.88;OV,192.90;FeXII,195.12;HeII,256.32;SiVII,275.35;FeXV,284.16

WARNING:

None

For obtained fits files by this study, please visit Studies Available for EIS

page and click right button for study #251

Flare

FlareO_slit_AJW (Study 000286)

Study 000286:

ACRONYM: FlareO_slit_AJW

Objective:
--------------------
To capture activities in an active region leading to a flare.

Pointing:
--------------------
Point at a flaring active region.   

Study summary:
--------------------
TARGET:   		Flare
EXPOSURE TIME:  	30s
SLOT:     		2"
Raster Type:            Scan
FOV:      		180"x320"
ESTIMATED CADENCE:  	50m34s
Compression:            JPEG95
Data volume:            28.37 Mbits
Spectral Lines:         FeX,184.54;FeXII,186.75;OV,192.13;CaXVII,192.82;FeXII,195.12;HeII,256.32;FeXVI,262.98;FeXV,284.16

WARNING:

None

For obtained fits files by this study, please visit Studies Available for EIS

page and click right button for study #286