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GIS – an update Dr Lucie Green Mullard Space Science Laboratory UCL.

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Presentation on theme: "GIS – an update Dr Lucie Green Mullard Space Science Laboratory UCL."— Presentation transcript:

1 GIS – an update Dr Lucie Green Mullard Space Science Laboratory UCL

2 To get Good recent spectra Webpages to go through Giulio’s plot which show ghosted regions Ghost information file

3 GIS – New Web Pages www.mssl.ucl.ac.uk/www_solar/gis

4 GIS – Users Guide

5 GIS – ghost information file The ghostbuster software generates an information file SPECTRAL ATLAS 4 / GIS Meridian Study 2004-10-03T23:24:52.538, s31134r17.fits GSET: 66 ; Slit no/size: 2 / 4"x4" ; Pointing: [0,968] ------------------------------------------------------------------- --GIS Detector 1 - Likely Ghosting Regions-- ------------------------------------------------------------------- 154.544-162.676 173.922-182.495 192.073-199.780 210.414-214.423 Fe XI 180.2 A line ghosts to 160 A, 1434 counts (15%) recovered Fe X 177.1 A line ghosts to 157 A, 5791 counts (18%) recovered Fe X 174.0 A line ghosts to 154 A, 6293 counts (16%) recovered Fe XII 193.4 A line ghosts into 175 A --- Blend / unrecovered Fe XII 192. A line ghosts into 174.0 A --- Blend / unrecovered Wavelengths affected by ghosting Locations of recovered counts Blended lines

6 GIS - Studies

7 GIS – Data Archive Synoptic observations run since the start of the mission. For example, quiet sun obs: -SPECT_1 Slit: 2x2" Raster area: 30x30" Exposure time: 30s -GIMCP Slit: 2x2" Raster area: 2x2" Exposure time: 100s Search the archive! IDL> headcat, cat96, year=1996 Search though cat96.SCI_OBJ to look for coronal holes, active region loops etc…

8 GIS – Line Intensities LTGD decreases line intensity and broadens lines Uncorrected intensities give an idea of detector evolution

9 SPECT_1 study Spectral line counts

10 GIS – LTGD methods Filament dumps GIS1 in 2001 GIMCPS1 study – line by line analysis 197 A 171A

11 GIS – Long-term Gain Depression Flat fields available Strong lines

12 bla

13 GIS – Line Profiles

14 No LTGD cor. Line widths with LTGD cor.

15 Summary Request observations Request data GIS is working well Revision of calibration is underway Comments on User Guide are welcome

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