N. Freij, I. Dorotovic, R.J. Morton, M.S. Ruderman,
V. Karlovský, R. Erdélyi, 2016
On the Properties of Slow MHD Sausage Waves
within Small-scale Photospheric Magnetic Structures Astrophys. J. 817, 44
E. Sungging Mumpuni, D. Herdiwijaya, M. Djamal, T. Djamaluddin, 2015
Multi-wavelength fibril dynamics and oscillations above a sunspot -
I. Morphological signature Research Ast. Astrophys. 15, 1843
A.D. Joshi, T.G. Forbes, S.H. Park, K.S. Cho, 2015
A Trio of Confined Flares in AR 11087 Astrophys. J. 798, 97
M. Bodnárová, D. Utz, J. Rybák, 2014
On Dynamics of G-Band bright points Solar Phys. 289, 1543
F. Zuccarello, S.L. Guglielmino, P. Romano, 2014
Evolution and dynamics of orphan penumbrae in the solar
photosphere: analysis from multi-instrument observations Astrophys. J. 787, 57
J. Koza, J. Rybák, P. Gömöry,
A. Kucera, 2014
Inferring spectral characteristics of the H spectral
line observed by the DOT Lyot filter Contr. Astron. Obs. Skalnate Pleso, 44, 43
J.-L. Schiralli, 2014
A comparison of solar prominence data between Halpha
and EUV (He II 304 Å) PhD Thesis Univ. North Dakota
J. Koza, R.H. Hammerschlag, J. Rybák, P. Gömöry,
A. Kucera, P. Schwartz, 2014
Transmission profile of the Dutch Open Telescope H
Lyot filter Astron. Nachrichten 335, 409
O. Panasenco, S.-F. Martin, M. Velli, 2014
Apparent Solar Tornado-Like Prominences Solar Physics, 289, 603
S. Feng, L. Deng, Y. Yang, K. Yi, 2013
Statistical study of photospheric bright points in an active
region and quiet Sun Astrophys. Space Science, 348, 17
I. Kontogiannis, G. Tsiropoula, K. Tziotziou, 2013
Transmission and conversion of magneto-acoustic waves in the
quiet solar chromosphere 11th Hellenic Astron. Conf. 6
I. Kontogiannis, G. Tsiropoula, K. Tziotziou, 2013
Mode conversion and transmission of waves in quiet solar regions EGU Gen. Ass. Conf. abstracts
J. Koza, P. Sütterlin, P. Gömöry, J. Rybák,
A. Kucera, 2013,
Search for Alfvén waves in a bright network element
observed in H Contr. Astron. Obs. Skalnate Pleso, 43,5
A.D. Joshi, N. Srivastava, S.K. Mathew, S.F. Martin, 2013
Rapid formation and disappearance of a filament barb Solar Physics, 288, 191
R.H. Hammerschlag, G. Sliepen, F.C.M. Bettonvil,
A.P.L. Jägers,
P. Sütterlin, Y. Lin, S.F. Martin, O. Panasenco, E.P. Romashets, 2013
Large-field high-resolution mosaic movies SPIE Optical Engineering, August issue 2013
G.Tsiropoula, K. Tziotziou, I. Kontogiannis, M.S. Madjarska,
J.G. Doyle,
Y. Suematsu, 2012
Solar Fine-Scale Structures. I. Spicules and Other Small-Scale,
Jet-Like Events at the Chromospheric Level: Observations and
Physical Parameters Space Sci. Rev. 169, 181, preprint
R.H. Hammerschlag, J.N. Kommers, S. Visser, F.C.M. Bettonvil,
A.G.M. van Schie, S.J. van Leverink, G. Sliepen, A.P.L. Jägers,
W. Schmidt, R. Volkmer, 2012
Open-foldable domes with high-tension textile membranes:
the GREGOR dome AN 333 830, preprint
A. Joshi, S.-F. Martin, S. Mathew, N. Srivastava, 2012
High-resolution observations of a filament showing activated barb 39th COSPAR Scientific Assembly
S. Feng, K.-f. Ji, H. Deng, F. Wang, X.-d. Fu, 2012
Automatic detection and extraction algorithm of
inter-granular bright points J. Korean Astron. Society, 45. 167
R.J. Rutten, H. Uitenbroek, 2012
Chromospheric backradiation in ultraviolet continua and H A&A 540,
A86
P. Tanga, T. Widemann, B. Sicardy, J.-M. Pasachoff, J. Arnaud,
L. Comolli, A. Rondi, S. Rondi, P. Sütterlin, 2012,
Sunlight refraction in the mesosphere of Venus during the
transit on June 8th, 2004 Icarus 218 207, preprint
C. Kuckein, V. Martínez Pillet, R. Centeno, 2012
An active region filament studied simultaneously
in the chromosphere and photosphere: I - Magnetic structure A&A 539, A131
I. Kontogiannis, G. Tsiropoula, K. Tziotziou, 2012
Multi-wavelengths observations of oscillatory phenomena in a solar network region and their relation to the magnetic field 10th Hellenic Astronomical Conference
M. Bodnárová, J. Rybák, D. Utz, A. Hanslmeier, 2010
Dynamika fotosférických jasných bodov v G-páse
odvodená pouzitím dvoch plne automatických
algoritmov Procs. 20th Slovak National Solar Physics Meeting
I. Kontogiannis, G. Tsiropula, K. Tziotziou, M.K. Georgoulis, 2010
Oscillations in a network region observed in the
H line and their relation to the magnetic field A&A 524, A12
M. Bodnárová, D. Utz, J. Rybák, A. Hanslmeier, 2010
Dynamics of G-band bright points derived using two fully
automated algorithms Central European Astrophys. Bull. 34, 1, 25
R.H. Hammerschlag et al., 2010
The Irkutsk Barium filter for narrow-band wide-field
high-resolution solar images at the Dutch Open Telescope SPIE 7735, 265
G. Sliepen, A.P. Jägers, F.C.M. Bettonvil, R.H. Hammerschlag, 2010
Seeing measurements with autonomous, short-baseline
shadow band rangers SPIE 7733, 144
F.C.M. Bettonvil et al., 2010
The pier and building of the European Solar Telescope (EST) SPIE 7733, 97
F.C.M. Bettonvil et al., 2010
The enclosure for the European Solar Telescope (EST) SPIE 7733, 96
G. Sliepen, A.P.L. Jägers, R.H. Hammerschlag, F.C.M. Bettonvil, 2010
Foldable dome climate measurements and thermal properties SPIE 7733, 95
R.H. Hammerschlag et al., 2010
Mechanical design of a completely open-foldable dome for EST SPIE 7733, 17
R.J. Rutten, 2010
The quiet chromosphere. Old wisdom, new insights, future needs
Procs. 25th NSO Workshop, Mem. Soc. Astr. It. 81, 565
preprint
R.J. Rutten, 2010
Solar Spectroscopy and (Pseudo-)Diagnostics of the Solar
Chromosphere
Procs. Kodaikanal Conference “Recent Advances in Spectroscopy”
ASSP 17, 163, 2010
I. Kontogiannis, G. Tsiropula, K. Tziotziou, 2010
Power halo and magnetic shadow in a solar quiet region
observed in the Halpha line A&A 510, A41
I. Kontogiannis, G. Tsiropoula, K. Tziotziou, 2010
Comparative Analysis of Oscillations of a Solar Quiet
Region Using Multi-Wavelength Observations ASP Conf. Series, 424, 31
R.H. Hammerschlag, F.C.M. Bettonvil, A.P.L. Jägers,
G. Sliepen, 2009
Open Principle for Large High-Resolution Solar Telescopes Earth, Moon, Planet 104, 83
S. Berkebile-Stoiser, P. Gömöry, A.M. Veronig, J. Rybák,
P. Sütterlin, 2009
Multi-wavelength fine structure and mass flows in solar microflares A&A 505, 811
B. Bein, A. Veronig, J. Rybak, P. Gömöry,
S. Berkebile-Stoiser, P. Sütterlin, 2009
Multi-wavelength Observations of Microflares Near an
Active Region Central European Astrophys. Bull., 33, 179
M.J.Martínez González, L.R. Bellot Rubio, 2009
Emergence of Small-scale Magnetic Loops Through the Quiet
Solar Atmosphere ApJ 700, 1391
G. Tsiropoula, K. Tziotziou, P. Schwartz, P. Heinzel, 2009
Oscillatory phenomena in a solar network region IAU Symp. 257, 181
R.H. Hammerschlag, F.C.M. Bettonvil, A.P.L. Jägers, G. Sliepen, 2009
Open Principle for Large High-Resolution Solar Telescopes Earth Moon and Planets, 104, 83
K. Tziotziou, G. Tsiropoula, K. Tziotziou, P. Schwartz, P. Heinzel, 2008
Oscillatory phenomena in a solar network region
Procs. 12th European Solar Physics Meeting
2008ESPM...12.2.41T
T. Roudier, J.M. Malherbe, M. Švanda, G. Molodij, S. Keil,
P. Sütterlin, B. Schmieder, V. Bommier,
G. Aulanier, N. Meunier, M. Rieutord, S. Rondi, 2008
Photospheric flows around a quiescent filament at large
and small scale and their effects on filament destabilization SF2A-2008, 569
R.J. Rutten, 2008
Concluding Remarks
Procs. 12th European Solar Physics Meeting
2008ESPM...12..7.1R
G. Tsiropoula, K. Tziotziou, P. Schwartz, P. Heinzel, 2008
Multiwavelength analysis of a solar quiet region A&A 493, 217
B. Bovelet, E. Wiehr, 2008
The quiet Sun's magnetic flux estimated from
Ca II H bright inter-granular G-band structures A&A 488, 1101
P.N. Brandt, A.V. Getling, 2008
Do Long-Lived Features Really Exist in the Solar Photosphere?
II. Contrast of Time-Averaged Granulation Images Solar Physics, 249, 307
S.S. Hasan, A.A. van Ballegooijen, 2008
Dynamics of the solar magnetic network.
II. Heating the magnetized chromosphere ApJ 680, 1542
R.J. Rutten, B. van Veelen, P. Sütterlin, 2008
DOT Tomography of the Solar Atmosphere
VII. Chromospheric Response to Acoustic Events Solar Physics 251, 533
R.J. Rutten, 2008
Halpha as chromospheric diagnostic
Procs. First Hinode Science Meeting (Dublin)
ASP Conf. Series 397, 54
Ø. Langangen, M. Carlsson, L. Rouppe van der Voort,
V. Hansteen, B. DePontieu, 2008
Spectroscopic measurements of dynamic fibrils in the
Ca II 8662 Å line ApJ 673, 1194
R.H. Hammerschlag, F.C.M. Bettonvil, A.P.L. Jägers, G. Sliepen,2008
Cornelis Zwaan, open principle, and the future of
high-resolution solar telescopes SPIE 7012E, 20
A.P.L. Jägers, G. Sliepen, F.C.M. Bettonvil, R.H. Hammerschlag, 2008
Fast foldable tent domes SPIE 7018E, 56
F.C.M. Bettonvil, R.H. Hammerschlag, A.P.L. Jägers, G. Sliepen, 2008
Large fully retractable telescope enclosures still closable
in strong wind SPIE 7018E, 52
B. Bovelet, E. Wiehr, 2007
Multiple-Scale Pattern Recognition Applied to Faint
Intergranular G-band Structures Solar Physics 243,121
J. Sánchez Almeida, L. Teriaca, P. Sütterlin,
D. Spadaro, W. Schühle, R. J. Rutten, 2007
Search for photospheric footpoints
of quiet-Sun transition region loops A&A 475, 1101
C. Beck, L.R. Bellot Rubio, R. Schlichenmaier, P. Sütterlin, 2007
Magnetic properties of G-band bright points in a sunspot moat A&A 472, 607
S. Rondi, T. Roudier, G. Molodji, V. Bommier, S. Keil,
P. Sütterlin, J.-M. Malherbe, N. Meunier, B. Schmieder,
P. Maloney, 2007
Photospheric flows around a quiescent filament A&A 467, 1289
Y. Katsukawa, 2007
Observational analysis of the relation between coronal loop
heating and photospheric magnetic fields
Procs. Solar-B workshop
ASP Conf. Series 369, 287
R.H. Hammerschlag, F.C.M. Bettonvil, A.P.L. Jägers,
R.J. Rutten, 2007
Aperture increase options for the Dutch Open Telescope
Procs. Coimbra conference
ASP Conf. Series 368, 573
R.J. Rutten, 2007
Observing the solar chromosphere
Procs. Coimbra conference
ASP Conf. Series 368, 27
G. Tsiropoula, K. Tziotziou, J. Giannikakis, P. Young,
U. Schühle, P. Heinzel, 2007
Multi-wavelength Analysis of a Solar Quiet Region
Procs. Coimbra conference
ASP Conf. Series 368, 171
J. Koza, P. Sütterlin, A. Kucera, J. Rybák, 2007
Temporal Variations in the Orientation of Fibrils
Procs. Coimbra conference
ASP Conf. Series 368, 115
Ø. Langangen, M. Carlsson, L. Rouppe van der Voort, V. Hansteen, 2007
Chromospheric Spectroscopy at High Spatial Resolution
Procs. Coimbra conference
ASP Conf. Series 368, 45
C. Beck, K. Mikurda, L.R. Bellot Rubio, R. Schlichenmaier,
P. Sütterlin, 2007
Magnetic properties of G-band bright points Procs. Göttingen conference
D. Cabrera Solana, L.R. Bellot Rubio, C. Beck,
J.C. del Toro Iniesta, 2006
Evershed Clouds as Precursors of Moving Magnetic Features
around Sunspots ApJ 649, L41
R.H. Hammerschlag, F.C.M. Bettonvil, A.P.L. Jägers, 2006
Towers for telescopes with extreme stability: active or passive? SPIE 6273E, 50
R.H. Hammerschlag, F.C.M. Bettonvil, A.P.L. Jägers, G.B. Scharmer, 2006
Large bearings with incorporated gears, high stiffness, and
precision for the Swedish Solar Telescope (SST) on La Palma,
SPIE 6273E, 34
F.C.M. Bettonvil, R.H. Hammerschlag, P. Sütterlin, R.J. Rutten,
A.P.L. Jägers, G. Sliepen, 2006
Tunable H-alpha Lyot filter with advanced servo system and
image processing: instrument design and new scientific results
with the Dutch Open Telescope SPIE 6269E, 12
E. Lanford, M. Swain, C. Meyers, T. Muramatsu, G. Nielson,
V. Olson,
S. Ronsse, N. Vinding, E. Nyden, R. Hammerschlag, P. Little, 2006
Concept study and validation of Antarctic telescope tower SPIE 6268E, 36
P. Heinzel, U. Anzer, 2006
On the fine structure of solar filaments ApJ 643, L65
C. Beck, W. Schmidt, L.R. Bellot Rubio, R. Schlichenmaier,
P. Sütterlin, B.W. Lites, 2006
Polarimetric observations of the formation
of a G-band bright point
Procs. 4th Solar Polarization Workshop
ASP Conf. Series, 358, 72
F. Snik, F.C.M. Bettonvil, A.P.L. Jägers,
R.H. Hammerschlag, R.J. Rutten, C.U. Keller, 2006
The Ba II 4554 / Hbeta imaging polarimeter for
the Dutch Open Telescope
Procs. 4th Solar Polarization Workshop
ASP Conf. Series, 358, 205
J. Leenaarts, R.J Rutten, P. Sütterlin, M. Carlsson, H. Uitenbroek,
2006
DOT tomography of the solar atmosphere VI. Magnetic elements
as bright points in the blue wing
of Halpha A&A 449, 1209
R.J. Rutten, 2006
On the nature of the solar chromosphere
Procs. 23rd NSO Workshop
ASP Conf. Series, 354, 282
A.G. de Wijn, R.J. Rutten, E.M.W.P. Haverkamp, P. Sütterlin, 2006
Magnetic patches in internetwork areas
Procs. 23rd NSO Workshop
ASP Conf. Series, 354, 20
H. Zaun, 2006
Unter permanenter Observation Persepolis 23
K. Tziotziou, G. Tsiropoula, P. Sütterlin, 2005
DOT tomography of the solar atmosphere
V. Analysis of a surge from AR10486 A&A 444, 265
A.G. de Wijn, R.J Rutten, E.M.W.P. Haverkamp, P. Sütterlin, 2005
DOT tomography of the solar atmosphere
IV. Magnetic patches in internetwork areas A&A 441, 1183
L. Bellot Rubio, C. Beck, 2005
Magnetic Flux Cancellation in the Moat of Sunspots: Results
from Simultaneous Vector Spectropolarimetry
in the Visible and the Infrared ApJ 626, L125
J. Leenaarts, P. Sütterlin, R.J. Rutten, M. Carlsson,
H. Uitenbroek, 2005,
Small-scale magnetic elements as bright points in the blue
H wing ESA SP-596, 15
J. Leenaarts, S. Wedemeyer-Böhm, 2005
DOT tomography of
the solar atmosphere III. Observations and simulations of
reversed granulation A&A 431, 687
S. Shelyag, M. Schüssler, S.K. Solanki, S.V. Berdyugina,
A. Vögler, 2004
G-band spectral synthesis and diagnostics of simulated
solar magneto-convection A&A 427, 335
W. Pötzi, P.N. Brandt, 2004
Is solar plasma sinking down in vortices? Hvar Obs. Bull. 29, 1
T.E. Berger, A.M. Title, 2004
Recent progress in high-resolution observations
Procs. Fifth Solar-B Science Meeting
ASP Conf. Series, 325, 95
A.G. de Wijn, K. Tziotziou, G. Tsiropula, P. Sütterlin, 2004
DOT studies of chromospheric fine structure in active region AR10486 Poster Nederlandse Astronomenconferentie
R.H. Hammerschlag, O. von der Lühe, F.C.M. Bettonvil,
A.P.L. Jägers, F. Snik, 2004
GISOT: A giant solar telescope SPIE 5489, 491
F.C.M. Bettonvil, R.H. Hammerschlag, P. Sütterlin,
R.J. Rutten, A.P.L. Jägers, F. Snik, 2004
DOT++: The Dutch Open Telescope with 1.4-m aperture SPIE 5489, 362
R.J. Rutten, F.C.M. Bettonvil, R.H. Hammerschlag,
A.P.L. Jägers, J. Leenaarts, F. Snik, P. Sütterlin,
K. Tziotziou, A.G. de Wijn, 2004
The Dutch Open Telescope on La Palma Procs. IAU Symposium 223, 597
P. Sütterlin, L.R. Bellot Rubio, R. Schlichenmaier, 2004
Asymmetrical appearance of dark-cored filaments in sunspot
penumbrae A&A 424, 1049
R.J. Rutten, A.G. de Wijn, P. Sütterlin, 2004
DOT tomography of the solar atmosphere
II. Reversed granulation in Ca II H A&A 416, 333
R.J. Rutten, R.H. Hammerschlag, F.C.M. Bettonvil, P. Sütterlin,
A.G. de Wijn, 2004
DOT tomography of the solar atmosphere
I. Telescope summary and program definition A&A 413, 1183
B. Bovelet, E. Wiehr, 2003
Dynamics of the solar active region fine structure A&A 412, 249
L.H.M. Rouppe van der Voort, R.J. Rutten,
P. Sütterlin, P. J. Sloover, J. M. Krijger, 2003
La Palma observations of umbral flashes A&A 403, 277
L.H.M. Rouppe van der Voort, 2003
On the time variability of the Evershed effect A&A 397, 757
P. Nisenson, A. A. van Ballegooijen, A. G. de Wijn, P. Sütterlin, 2003
Motions of isolated G-band bright points
in the solar photosphere ApJ 587, 458
R.J. Rutten, 2003
High-Resolution Solar Physics
Procs. Udaipur Solar Observatory Silver Jubilee
"Probing the Sun with High Resolution"
Narosa Publ. House, New Delhi, 39
R.H. Hammerschlag, A. P. L. Jägers, F.C.M. Bettonvil, 2003
Large open telescope: size upscaling from
DOT to LOT SPIE 4853, 294
F.C.M. Bettonvil, R.H. Hammerschlag, P. Sütterlin,
A. P. L. Jägers, R.J. Rutten, 2003
Multi-wavelength imaging system for the
Dutch Open Telescope SPIE 4853, 306
R.J. Rutten, P. Sütterlin, A.G. de Wijn, R.H. Hammerschlag,
F.C.M. Bettonvil, P. W. Hoogendoorn,
A. P. L. Jägers, 2002
Dutch Open Telescope: status, results, prospects
Procs. 1Oth European Solar Meeting (Prague)
"Solar Variability: From Core to Outer Frontiers"
ESA SP-506, 903
G.I. Kushtal, V.I. Skomorovsky, 2002
Advance of the geometrical measurement of the
birefringent filter's crystal plates
and two-dimensional measurements of Doppler velocity in the solar
atmosphere SPIE 4900, 504
R.J. Rutten, A.G. de Wijn, P. Sütterlin, F.C.M. Bettonvil,
R.H. Hammerschlag, 2002
Opening the Dutch Open Telescope
Procs. Santorini Euroconference and IAU Colloquium 188
"Magnetic Coupling of the Solar Atmosphere"
ESA SP-505, 565
C. Briand, M Collados, P. Sütterlin, 2002
THEMIS and DOT joint observations on NOAA 9716
Procs. Santorini Euroconference and IAU Colloquium 188
"Magnetic Coupling of the Solar Atmosphere"
ESA SP-505, 361
H. Balthasar, P. Sütterlin, M. Collados, 2001
Penumbral fine structure: need for larger telescopes AN 322, 367
M. Sobotka, P. Sütterlin, 2001
Fine structure in sunpots
IV. Penumbral grains in speckle reconstructed images A&A 380, 714
P. Sütterlin, R.J. Rutten, V.I. Skomorovsky, 2001
Ba II 4554 Å speckle imaging as solar Doppler diagnostic A&A 378, 251
P. Sütterlin, 2001
The size of penumbral fine structure A&A 374, 21
R.J. Rutten, 2001
DOT strategies versus Orbiter strategies
Procs. "Solar Encounter: the First Solar Orbiter Workshop"
ESA SP-493, 357
P. Sütterlin, R.H. Hammerschlag, F.C.M. Bettonvil,
R.J. Rutten, V.I. Skomorovsky, G.N. Domyshev,
2001
A Multi-Channel Speckle Imaging System for the DOT
Procs. 20th NSO/SP Summer Workshop "Advanced Solar Polarimetry -
Theory,
Observation, and Instrumentation"
ASP Conf. Series, 236, 431
R.J. Rutten, R.H. Hammerschlag, P. Sütterlin,
F.C.M. Bettonvil,
2001
Proxy magnetometry with the Dutch Open Telescope
Procs. 20th NSO/SP Summer Workshop "Advanced Solar Polarimetry -
Theory,
Observation, and Instrumentation"
ASP Conf. Series, 236, 25
R.J. Rutten, R.H. Hammerschlag, P. Sütterlin, F.C.M.Bettonvil,
E.B.J. van der Zalm, 2001
Solar Magnetometry with the Dutch Open Telescope
Procs. 1st SOLSPA Euroconference "The Solar Cycle and Terrestrial
Climate"
ESA SP-463, 611
R.J. Rutten, 1999
Two-Dimensional Phase-Diverse Stokes Spectrometer
Procs. NSO/SP Summer Workshop "High Resolution Solar Physics:
Theory, Observations, and Techniques",
ASP Conf. Series 183, 296
R.J. Rutten, 1999
The Dutch Open Telescope: History, Status, Prospects
Procs. NSO/SP Summer Workshop "High Resolution Solar Physics:
Theory, Observations, and Techniques",
ASP Conf. Series 183, 147
R.J. Rutten, R.H. Hammerschlag, F.C.M. Bettonvil, 1999
The Dutch Open Telescope
Procs. Armagh Workshop "Solar and Stellar Activity:
Similarities and Differences",
ASP Conf. Series 158, 57
Robert H. Hammerschlag, Felix C.M. Bettonvil, 1998
The Dutch Open Telescope at the Roque de los
Muchachos Observatory New Astronomy Reviews 42, 485
R.J. Rutten, R.H. Hammerschlag, F.C.M. Bettonvil, 1997
The Dutch Open Telescope
Procs. THEMIS Forum "Science with THEMIS"
Pub. Meudon, 285
R.J. Rutten, R.H. Hammerschlag, F.C.M. Bettonvil, 1997
The Dutch Open Telescope
Procs. SCORe96: "Solar Convection and Oscillations and
their Relationship"
Astrophys. Space Science Lib. 225, Kluwer, 289
R.H. Hammerschlag, 1986
Friction and stick-slip in a telescope construction Wear 113, 17
R.H. Hammerschlag, 1983
A telescope drive with emphasis on stability SPIE 444, 128
R.H. Hammerschlag, 1981
Construction outlines of the Utrecht Open Solar Telescope
Procs. Sacramento Peak Workshop
"Solar Instrumentation: What's Next?"
Sunspot Workshop, 247
R.H. Hammerschlag, 1981
Aperture screens for solar telescopes
Procs. Sacramento Peak Workshop
"Solar Instrumentation: What's Next?"
Sunspot Workshop, 274
Spectral Line