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

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 ?

HELLRIDE Overview HELLRIDE stands for HELioseismological Large Regions Interferometric Device

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

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

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

HELLRIDE Overview Etalons - IC Optical EC50 and EC nm – 860 nm

HELLRIDE Overview Narrowband Filter Mount - 4 x 4 Matrix μ Repositioning

HELLRIDE Overview Narrowband Filter Mount - 4 x 4 Matrix μ Repositioning

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

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

HELLRIDE Overview Status:Installed at VTT since 2013

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

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

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

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 nmC I15 Scansteps nmFe I15 Scansteps nmTi I15 Scansteps nmFe I10 Scansteps nmFe I20 Scansteps nmNa I30 Scansteps nmNa I30 Scansteps nmFe I20 Scansteps nm Telluric15 Scansteps nmFe I15 Scansteps nmH-Alpha25 Scansteps nmHe-Ne15 Scansteps nmFe I20 Scansteps nmFe I20 Scansteps nmFe I10 Scansteps

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

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yet resolvedSpring 2014 Graphics Overload:Not yet resolvedSpring 2014 Camera Upgrade:Not yet resolvedAutumn 2014 Outdated VTT HandlingUnder developmentSpring 2014 Environmental Exposure:Not yet resolved2014 / 2015 Image Motion:Not yet resolvedSpring 2015 Lateral FOV DriftsUnder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

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

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

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

Developments Tablet Usage - Versatility - Hardware Reduction - Remote Handling

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

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

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

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

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

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

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

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

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

Developments New Absolute Pointing Existing Problem:- Thermally related Drifts

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

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

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

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

Developments New Absolute Pointing Goal:- Develop New Pointing Model

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

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

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.

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

Fulldisk „Laboratory“ Locations: HELLRIDE Fulldisk „Lab“

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

Fulldisk „Laboratory“ Test Setup 2012:

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

Fulldisk „Laboratory“ New Setup 2013 / 2014:

Fulldisk „Laboratory“ New Setup 2013 / 2014:

Fulldisk „Laboratory“ New Setup 2013 / 2014:

Fulldisk „Laboratory“ New Setup 2013 / 2014:

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

Fulldisk „Laboratory“ Mech. Engineering: Thomas Sonner

The End