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
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 EC70
- 530 nm – 860 nm
HELLRIDE Overview
Narrowband Filter Mount
- 4 x 4 Matrix
- 0.5 μ Repositioning
HELLRIDE Overview
Narrowband Filter Mount
- 4 x 4 Matrix
- 0.5 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:
Campaign 2:
A. Wisniewska (April, 6 Days)
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 nm Mg I
538.0 nm C I
538.1 nm Fe I
538.2 nm Ti I
543.4 nm Fe I
557.6 nm Fe I
589.6 nm Na I
590.0 nm Na I
630.1 nm Fe I
630.15 nm Telluric
630.2 nm Fe I
654.5 nm H-Alpha
632.0 nm He-Ne
709.1 nm Fe I
777.1 nm Fe I
777.2 nm Fe I
20 Scansteps
15 Scansteps
15 Scansteps
15 Scansteps
10 Scansteps
20 Scansteps
30 Scansteps
30 Scansteps
20 Scansteps
15 Scansteps
15 Scansteps
25 Scansteps
15 Scansteps
20 Scansteps
20 Scansteps
10 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:
Axis 2 Malfunction:
Graphics Overload:
Camera Upgrade:
Outdated VTT Handling
Resolved
Not yet resolved
Not yet resolved
Not yet resolved
Under development
-
Environmental Exposure:
Image Motion:
Lateral FOV Drifts
Not yet resolved
Not yet resolved
Under development
2014 / 2015
Spring 2015
2015 / 2016
Data Processing Software:
Under development
2015
Spring 2014
Spring 2014
Autumn 2014
Spring 2014
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 2012
- VTT / GONG 2012
- 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:
Fulldisk „Lab“
HELLRIDE
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