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Electro-optical Spectro-polarimeter for Ground- and Space-based Solar Coronagraphy S. Fineschi, INAF-Osservatorio Astronomico di Torino, Italy 1 May 9th,

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Presentation on theme: "Electro-optical Spectro-polarimeter for Ground- and Space-based Solar Coronagraphy S. Fineschi, INAF-Osservatorio Astronomico di Torino, Italy 1 May 9th,"— Presentation transcript:

1 Electro-optical Spectro-polarimeter for Ground- and Space-based Solar Coronagraphy S. Fineschi, INAF-Osservatorio Astronomico di Torino, Italy 1 May 9th, MP1104 COST Action 1st WG meeting, Warsaw

2 OUTLINE Proba-3: ESA Formation-flying space coronagraph LC Tunable-filter Polarimeter (LCTP) for the green line LCTP Lab performances evaluation Eclipse 2010 observations with LCTP prototye Case for ground-based emission-line coronagraphy in Europe 2

3 ESA PROBA-3 (ESA Startiger: Phase-A) Formation-Flying Coronagraph A coronagraph with the external occulter on one spacecraft and the optical instrument on the other spacecraft at ~150 meters from the first one. Proba-3 – ESA: launch ASPIICS: 2009 selection; 2010 Phase-A (Startiger); 2012 Phase-B 3

4 4 LC Lyot filter ASPIICS

5 5 Liquid-crystal Tunable Lyot Filter for Solar Coronagraphy

6 LC Tunable-filter & Polarimeter Procurement

7 LCTP Perfomances 7

8 TURIN ASTRONOMICAL OBS. LAB Monochr. slit width= 25 µm; height = 6 mm Monochr. spectrum= CW nm; FWHM = 0.1nm Collim. lens (L1) f = 140 mm Camera lens (L2) f = 1130 mm CCD pixel sixe =25 Spatial scale = 5 arcsec/pix (ASPIICS: 3 arcsec/pix) 8

9 LCTP SPECTRAL TESTS 9

10 10 0°0° 90° 45° 135°

11 11 Proba-3 rad-hard requirement (Summary Mission Requirements: ESA P3-EST-TN-7002) 1996 – 1.5 Mrad of < 32 MeV e- (Graham et al., SPIE 2811) 1998 – 12 krad of 20 MeV protons (Noto et al., Opt. Eng.) 2007 – 50 krad of -rad; Thermal-vac; Vibe tests (Heredero et al., Appl. Opt. 46) – 50 krad 100 MeV p +, 10 MeV e - ESA-ITT LC Space Validation for SolO LC SPACE VALIDATION (RAD-HARDNESS)

12 The CorMag was operated during the total solar eclipse of July, 11th 2010 on Tatakoto Atoll (French Polynesia) 12

13 LCTP BASED SPECTROPOLARIMETER–CORMAG 13

14 CORONAL TEMPERATURE CONTOUR LEVELS: BLUE: K GREEN: K 14 K-corona image by M. Drukmuller

15 15 HAO CoMP LC Lyot filter & Polarimeter FeXIII nm S. Tomczyk, et al. Science 317, 1192 (2007);

16 16 COMP observations. HAO model. S. Gibson courtesy, 2012

17 17 COMP-S LOMNICKY PEAK OBSERVATORY (SLOVAK R.)

18 18 LCTP CLIMSO CORONAGRAPH PIC DU MIDI (FRANCE)?

19 19 LCTP FILTER & ASPIICS DOMEC FRENCH-ITALIAN CONCORDIA BASE (ANTARTICA)? Sky Brightness Concordia J. Arnaud, M. Faroubert, 2009 ESCAPE proposal L. Dame, 2011

20 Thanks !!! 20

21 The LCTP achieves all the spectroscopy performances expected from the F-P etalon The LCTP has additional science capabilities (e.g., polarimetry, simultaneous spectroscopy & high-res imaging) ESA completed a LC space validation program The LCTP operational advantages: no mechs, some science preserved even in fail state, OPS monitoring capability also during coronal images acquisition 2121 Aug., Solar Physics and Space Weather Instrumentation IV – San Diego, CA Liquid-crystal Tunable Lyot Filter for Solar Coronagraphy

22 OATO LAB 22

23 0 -d 0 0 +d exit slit 23 Monochromator setting Center wavel.: nm FWHM: 0.1 nm

24 LCTP VS. F-P ETALON SPECTROSCOPY 2421 Aug., Solar Physics and Space Weather Instrumentation IV – San Diego, CA

25 LC Tunable-filter 25

26 LCTP AND F-P CHARACTERISTICS 2621 Aug., Solar Physics and Space Weather Instrumentation IV – San Diego, CA Liquid-crystal Tunable Lyot Filter for Solar Coronagraphy

27 LCTP BASED SPECTROPOLARIMETER - CORMAG 2721 Aug., Solar Physics and Space Weather Instrumentation IV – San Diego, CA

28 LCTP BASED SPECTROPOLARIMETER–CORMAG 2821 Aug., Solar Physics and Space Weather Instrumentation IV – San Diego, CA

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