1. Spectrometer HELLRIDE as a Testing Ground for Fulldisk Velocity Mapping Joachim Staiger, KIS Freiburg - HELLRIDE Overview - First Observations at VTT 2013 - Problems - Ongoing Development - Fulldisk „Lab“ - Fulldisk Tests 2014

2. HELLRIDE Overview Instrument Type:2D Fabry-Perot Spectrometer Operation Focus:Multiline Operation 16 Bands available 100“-by-100“ FOV standard 300“-by-300“ synthetic Fulldisk ?

3. HELLRIDE Overview HELLRIDE stands for HELioseismological Large Regions Interferometric Device

4. HELLRIDE Overview Scientific Target:- Analysing Waves in the Atmosphere - Analysing Flares Requirements:- Long Recording Times Oportunity:- Future VTT Usage

5. HELLRIDE Overview Development Goals - Simple Design - Easy Handling - Step-by-Step Approach - Cost effective Approach (Stock / Scrap)

6. HELLRIDE Overview Optical Layout - Dual Etalon Tandem Configuration - Collimated Beam Design

7. HELLRIDE Overview Etalons - IC Optical EC50 and EC70 - 530 nm – 860 nm

8. HELLRIDE Overview Narrowband Filter Mount - 4 x 4 Matrix - 0.5 μ Repositioning

9. HELLRIDE Overview Narrowband Filter Mount - 4 x 4 Matrix - 0.5 μ Repositioning

10. HELLRIDE Overview Narrowband Detector - Dalsa 1M30 CCD - 14 μ Pixel Square - 4-Axis Mount

11. HELLRIDE Overview „Onboard“ Software - System Simulation - Data Quicklook - Ringdiagramm Pipeline (64 x 64)

12. HELLRIDE Overview Status:Installed at VTT since 2013

13. First Observations 2013 Campaign 1:A. Wisniewska (April, 6 Days) Campaign 2:A. Wisniewska (September, 6 Days) Sunspot / Quiet Sun 2 Spectral Lines (5434 / 5890) Cadence 15 secs 10 Hour Records

14. First Light Results 2013, A.Wisniewska Linear Powerspectrum, 2 Hours, 5434 Angstr. Pixel Average

15. First Light Results 2013, A.Wisniewska Ringdiagram 64x64, 8 Hours 5434 Angstr., 3.0 mHz

16. First (and only) Multiline Test 2009 Multiline Ringdiagramms 4 Hours, 60 secs Cadence, 16 Lines Using GFPI Etalons Spectral Lines:517.2 nmMg I20 Scansteps 538.0 nmC I15 Scansteps 538.1 nmFe I15 Scansteps 538.2 nmTi I15 Scansteps 543.4 nmFe I10 Scansteps 557.6 nmFe I20 Scansteps 589.6 nmNa I30 Scansteps 590.0 nmNa I30 Scansteps 630.1 nmFe I20 Scansteps 630.15 nm Telluric15 Scansteps 630.2 nmFe I15 Scansteps 654.5 nmH-Alpha25 Scansteps 632.0 nmHe-Ne15 Scansteps 709.1 nmFe I20 Scansteps 777.1 nmFe I20 Scansteps 777.2 nmFe I10 Scansteps

17. First (and only) Multiline Test 2009 Multiline Ringdiagramms 4 Hours, 60 secs Cadence, 16 Lines Using GFPI Etalons

18. Problems and Shortcomings Crash after appr. 2 hours:Resolved- Axis 2 Malfunction:Not yet resolvedSpring 2014 Graphics Overload:Not yet resolvedSpring 2014 Camera Upgrade:Not yet resolvedAutumn 2014 Outdated VTT HandlingUnder developmentSpring 2014 Environmental Exposure:Not yet resolved2014 / 2015 Image Motion:Not yet resolvedSpring 2015 Lateral FOV DriftsUnder development2015 / 2016 Data Processing Software:Under development2015

19. Problems and Shortcomings Pending Tasks: Update:Aging Components Camera System Computing Reduce:Thermal Exposure Straylight Seeing based Image Motion Pointing Instabilities

20. Developments Encasement - Shield off Dust - Shield off Straylight - Reduce Temperature Fluctuations

21. Developments High Speed Drives - No rotating Parts - Moving EM Field - 10 G Acceleration-

22. Developments Tablet Usage - Versatility - Hardware Reduction - Remote Handling

23. Developments Realtime Velocity Mapping - Enable Realtime Ringdiagram-Pipeline - Reduce Data Storage Bottleneck - Enable Remote Operations - Offline Tests Successful - Calibration with SDO Pending - Will be implemented as an Observers Option

24. Developments Doppler Signal Locking - Laser attached to Matrix Mount - Continuous Laser Line Scanning

25. Developments Doppler Signal Locking - Laser attached to Matrix Mount - Continuous Laser Line Scanning

26. Developments Doppler Signal Locking - Using Frequency stabilized Laser (< 3 MHz) - Drift < 2 m/sec, 8 hours - Realtime Peak Location Processing - Feedback to Etalons

27. Developments New Finesse Calibration - Adust Etalon Plate Parallelity - Stabilize Wavelength Purity

28. Developments New Finesse Calibration - Adust Etalon Plate Parallelity - Stabilize Wavelength Purity

29. Developments New Spectroscopic Tracking Problem:- Image Motion - No AO Usage over 10 hours. Solution:- Spectroscopic Correlation - Individual Wavelength Tracking - Overlay Wavelengths

30. Developments Remote Control Motivation:Off-Lab Monitoring Remote Maintenance Staff Limited Operation Automated Operation Realization:TCP/IP Sockets Client / Server Architecture ASCII Commands

31. Developments Full Disk Velocity Mapping Tests Goals:- Evaluate Exposure Times - Evaluate Scan Step Requirements - Evaluate Readout Options - Evaluate Multiline Options - Evaluate Fulldisk / Subfield-Tiling - Test Flat Procedures - Compare to SDO /GONG - Extrapolate from 5 cm to 50 cm Aperture

32. Developments New Absolute Pointing Existing Problem:- Thermally related Drifts

33. Developments New Absolute Pointing Thermal Drifts:- May Influence Co-Alignment - May influence Data Analysis - Is Inherent Pointing Shortcoming

34. Developments New Absolute Pointing Thermal Drifts:- May Influence Co-Alignment - May influence Data Analysis - Is Inherent Pointing Shortcoming

35. Developments New Absolute Pointing Thermal Drifts:- May Influence Co-Alignment - May influence Data Analysis - Is Inherent Pointing Shortcoming

36. Developments New Absolute Pointing Thermal Drifts:- May Influence Co-Alignment - May influence Data Analysis - Is Inherent Pointing Shortcoming

37. Developments New Absolute Pointing Goal:- Develop New Pointing Model

38. Developments New Absolute Pointing Approach:- Guiding Telescope is Imaging Telescope - Pointing is of Barcode Type Reading

39. Developments New Absolute Pointing Tests:- VTT / SDO 2012 - VTT / GONG 2012 - VTT / SUMER / IRIS 2013

40. Developments New Absolute Pointing Benefits:- Delivering absolute Coordinates continuously - First Primary Beam Closed-Loop Operation - Significant Stability Improvement - No rigid Link between Guiding and Main Telescope - Multiple Telescopes may share single Guiding Telescope - Single Telescope may use Multiple Guiding Telescopes - Minimum Engineering required - Off-the-Shelf Components may be used.

41. Fulldisk „Laboratory“ Usage: - New Pointing - HELLRIDE Fulldisk Tests - IAC Coelo Test (Solar Orbiter) ?

42. Fulldisk „Laboratory“ Locations: HELLRIDE Fulldisk „Lab“

43. Fulldisk „Laboratory“ Test Setup 2012: - Setup HELLRIDE Data Aquis. System - Divert Guiding Beam to Dalsa - Fit Sun to Detector - Record Fulldisk at Short Cadence

44. Fulldisk „Laboratory“ Test Setup 2012:

45. Fulldisk „Laboratory“ Test Setup 2012: Problems:- Mounting / Dismounting required - Vertical Optical Axis - „Transit“-Area

46. Fulldisk „Laboratory“ New Setup 2013 / 2014:

47. Fulldisk „Laboratory“ New Setup 2013 / 2014:

48. Fulldisk „Laboratory“ New Setup 2013 / 2014:

49. Fulldisk „Laboratory“ New Setup 2013 / 2014:

50. Fulldisk „Laboratory“ New Setup 2013 / 2014: - Secluded Location off „Transit“-Area - Beamsplitter instead of Mirror - Continuous Operation - Horizontal Optical Bench - Elevator Access („HELLRIDE Drive-In“) - Standard HELLRIDE Software may be used - Retrofit time appr. 1 – 2 hours

51. Fulldisk „Laboratory“ Mech. Engineering: Thomas Sonner

52. The End