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The Resource Imaging the Sun Using a Digital Spectroheliograph

Imaging the Sun Using a Digital Spectroheliograph

Label
Imaging the Sun Using a Digital Spectroheliograph
Title
Imaging the Sun Using a Digital Spectroheliograph
Creator
Subject
Language
eng
Member of
Cataloging source
MiAaPQ
Literary form
non fiction
Nature of contents
dictionaries
Series statement
The Patrick Moore Practical Astronomy Ser
Imaging the Sun Using a Digital Spectroheliograph
Label
Imaging the Sun Using a Digital Spectroheliograph
Link
http://libproxy.rpi.edu/login?url=https://ebookcentral.proquest.com/lib/rpi/detail.action?docID=4532425
Publication
Copyright
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Carrier category
online resource
Carrier category code
cr
Carrier MARC source
rdacarrier
Color
multicolored
Content category
text
Content type code
txt
Content type MARC source
rdacontent
Contents
  • Dedication -- Preface -- Acknowledgments -- Contents -- Chapter 1: Brief History of Solar Observations -- 1.1 Introduction -- 1.1.1 Early Telescopic Observations -- 1.1.2 Solar Eclipses -- 1.1.3 The Sunspot Cycle -- 1.1.4 Photography -- Further Reading -- Chapter 2: Safe Filters for Solar Imaging -- 2.1 Glass Filters -- 2.2 Neutral Density (ND) and Optical Density (OD) -- 2.3 Multi-coated Filters -- 2.4 White Light Solar Film Filters -- 2.5 Herschel Solar Wedge -- 2.6 Chromosphere Filters -- 2.6.1 Lyot Filter -- 2.6.2 Fabry-Perot (F-P) Filter -- Further Reading -- Webpages -- Chapter 3: The Sun and Its Atmosphere -- 3.1 Introduction -- 3.2 Our Nearest Star -- 3.2.1 The Magnetic Sun -- 3.3 Measuring Positions on the Solar Disk: Heliographic Coordinates -- 3.4 Imaging the Photosphere -- 3.4.1 White Light Imaging: Safe Filters -- 3.4.2 Solar Imaging: Camera Selection -- 3.5 The Solar Surface: The Photosphere Features -- 3.5.1 Limb Darkening -- 3.5.2 Granulation -- 3.5.3 Faculae -- 3.5.4 Active Areas and Sunspots -- Umbra and Penumbra -- Penumbral Filaments (Fibrils) -- Wilson Effect -- 3.6 The Chromosphere: An Introduction -- 3.7 Imaging the Chromosphere -- 3.7.1 Imaging the Chromosphere: HÜ Filters and Telescopes -- Thousand Oaks HAU System -- DayStar Filters -- Solar Spectrum -- Solar Scope -- Coronado (Meade) -- Lunt Systems -- 3.7.2 CaK Filters -- Imaging the Chromosphere: Cameras -- 3.7.3 Digital Spectroheliograph (SHG) -- 3.7.4 Chromosphere Imaging Terminology -- On Band, Off Band, Core and Wings -- The Importance of the Core and the Wings -- 3.8 The Solar Atmosphere: Chromospheric Features -- 3.8.1 Spicules -- 3.8.2 Mottles and Fibrils -- 3.8.3 Plage -- 3.8.4 Filaments and Prominences -- Hedgerow Prominence -- Flares, Surges/Spray Prominences -- Loops -- Coronal Rain -- 3.8.5 The Chromospheric Network -- 3.8.6 Ellerman Bombs (Moustaches)
  • 3.8.7 Morton Wave -- Further Reading -- Webpages -- Chapter 4: Solar Observations Using Spectroscopes -- 4.1 Introduction to Spectroscopy -- 4.2 Early Spectroscopy -- 4.3 Identification of Elements Using the Spectrum -- 4.3.1 Kirchhoff Laws -- 4.4 Early Use of Spectroscopy in Solar Observing -- 4.5 Spectrographs and Spectroheliographs (SHG) -- 4.6 Persistence of Vision -- 4.7 Spectrohelioscopes (SHS) -- 4.8 The Digital Spectroheliograph -- Further Reading -- Webpages -- Chapter 5: The Solar Spectrum -- 5.1 Introduction -- 5.1.1 Black Body, Planck and Wien Energy Distribution -- 5.2 Spectral Features in the Solar Spectrum -- 5.3 Formation of the Absorption Lines -- 5.4 Atlas of Solar lines -- 5.5 Doppler and Other Spectral Effects -- 5.5.1 Doppler Effect -- 5.5.2 Zeeman Effect -- 5.5.3 Magnetography and Magnetograms -- 5.5.4 Evershed Effect -- 5.5.5 Severny Moustache (Flares and Ellerman Bombs) -- Further Reading -- Webpages -- Chapter 6: Digital Spectroheliograph Design Basics -- 6.1 Design Basics: Key Components -- 6.2 The Telescope -- 6.2.1 Airy Disk, FWHM and PSF -- 6.2.2 Telescope Design and Energy Rejection Filters -- Measuring the Focal Length of a Barlow Lens -- 6.2.3 Solar Diameter vs. Focal Length -- 6.2.4 Surface (Spatial) Resolution vs. Seeing Conditions -- 6.2.5 Focus Tolerance -- Chromatic Focal Shift: Refractors -- Using Pre-filters as an Aid to Focusing -- 6.2.6 Mounting -- 6.2.7 Summary: Telescope -- 6.3 The Spectrograph Design Options -- 6.3.1 Classical Design -- 6.3.2 Littrow -- 6.3.3 Ebert-Fastie -- 6.3.4 Czerny-Turner -- 6.3.5 Summary: Spectrograph Optical Arrangements -- 6.4 The Entrance Slit -- 6.4.1 Setting of the Slit Gap -- 6.4.2 Measuring the Slit Gap -- 6.4.3 Length of the Slit Gap: Long Slits -- 6.4.4 Field Lens Compensation -- 6.4.5 Summary: Entrance Slit -- 6.5 The Collimator
  • 6.5.1 Precise Focusing of the Collimator to the Entrance Slit -- 6.5.2 Summary: Collimator -- 6.6 Gratings -- 6.6.1 Use of Prisms as Disperser -- 6.6.2 Abbe Number -- 6.6.3 Transmission Gratings and Grisms -- 6.6.4 Grating Theory -- Anamorphic Factor and Why It Is Important -- 6.6.5 Mounting the Grating -- 6.6.6 Using the Grating in Second Order and Above -- Field Angle (Þ Angle) Aberrations -- 6.6.7 Summary: Gratings -- 6.7 The Imaging System -- 6.7.1 Imaging Camera -- 6.7.2 CCD Chip Size -- 6.7.3 Pixel Size -- 6.7.4 Bayer Matrix -- 6.7.5 Surface (Spatial) Resolution -- 6.7.6 Quantum Efficiency -- 6.7.7 Spectral Dispersion and Resolution -- 6.7.8 Camera Exposure Times -- 6.7.9 Frame Rates/Scanning Rates -- 6.7.10 Aspect Ratio and Distortion -- 6.7.11 Bandwidth Selection -- 6.7.12 Wide Slit Recording of Prominences -- 6.7.13 Summary: Imaging System -- Further Reading -- Webpages -- Chapter 7: Construction of a Digital SHG: Two Examples -- 7.1 Option 1: Small Refractor Classical Spectrograph -- 7.1.1 Construction Notes -- 7.2 Option 2: A Long Focal Length Littrow Design -- 7.2.1 Construction Notes -- 7.3 Final Assembly Checks for the SHG -- 7.4 Calibration and Spectral Resolution -- 7.4.1 Method -- 1. Use the tab File/Add/Open images and select the master image. This will display the master image at the top of the screen (marked "01") and the associated profile below. -- 7.5 Taking the AVI Video -- Further Reading -- Webpages -- Chapter 8: SHG Processing Software -- 8.1 Tilt -- 8.2 Slant -- 8.3 Smile -- 8.4 Flats -- 8.4.1 Spectroscopic Flats -- 8.4.2 Synthetic Flats -- 8.5 Processing Software for Digital Spectroheliograms -- 8.5.1 SpecHelio Bas -- 8.5.2 IRIS -- 8.5.3 Virtual Dub/ImageJ -- 8.5.4 Spectral Line Merge -- Synthetic Flats
  • Besides transversalium removal, Wah also uses similar filter techniques to improve the dark sky background, and remove any obvious gradients within the image. -- 8.5.5 BASS Project -- Synthetic Flats -- Figure 8.30 shows the benefits of the application of the BASS Project synthetic flats. The mosaic result is very clean and the detail crisp. The method used by BASS Project to generate the synthetic flat appears to give an excellent outcome. -- 8.6 Other Software -- 8.6.1 AstroSnap -- 8.6.2 Spectral Processing Software -- 8.6.3 Mosaic Software -- Webpages -- Chapter 9: Amateur Digital SHG Instruments -- 9.1 Rondi -- 9.1.1 Results -- 9.2 Rousselle -- 9.2.1 Results -- 9.3 Poupeau -- 9.4 Defourneau -- 9.5 Zetner -- 9.5.1 Results -- 9.6 Smith -- 9.6.1 Results -- 9.7 Mete -- 9.7.1 Results -- 9.8 Chagniard -- 9.8.1 Results -- 9.9 Bartolick -- 9.9.1 Results -- Webpages -- Chapter 10: SHG Images and Science Achievements -- 10.1 On Band, Red and Blue HÜ Wings -- 10.2 Ellerman Bombs (Moustaches) -- 10.3 CaH, H1 and H3 Regions -- 10.4 Doppler Shift Images -- 10.5 Filaments/Prominences -- 10.6 Zeeman Magnetic Images -- 10.7 Magnetography and Magnetograms -- 10.8 Kasi Solar Imaging Spectrograph (KSIS) -- Further Reading -- Webpages -- Chapter 11: The Spectrohelioscope (SHS) -- 11.1 Cœlostat, Heliostats and Siderostats -- 11.2 Amateur SHS Instruments -- 11.2.1 SHS Synthesizers -- 11.2.2 Veio -- 11.2.3 Slaton SHS -- 11.2.4 Higgins SHS -- Results -- 11.2.5 Bartolick -- Further Reading -- Webpages -- Chapter 12: Future Solar Imaging Developments -- 12.1 Solar Imaging -- 12.2 Amateur SHG Developments -- 12.3 Commercial SHG -- Further Reading -- Webpages -- Appendix A Summary of Important Solar Wavelengths -- A.1 Fraunhofer Lines -- A.2 Major Solar Spectral Lines -- A.3 Suitable Target Lines for Zeeman Effect -- Appendix B SimSpec and SimSpec SHG Design Spreadsheets
  • Appendix C Suppliers of Components of Interest to the Amateur -- Appendix D -- Other Websites -- Useful Solar/Spectroscopy Forums -- Appendix E -- Selected Bibliography -- Yahoo Technical Support Group -- Glossary -- Index
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{'f': 'http://opac.lib.rpi.edu/record=b4385377'}
Extent
1 online resource (287 pages)
Form of item
online
Isbn
9783319248745
Media category
computer
Media MARC source
rdamedia
Media type code
c
Sound
unknown sound
Specific material designation
remote

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