m and near He 1083 nm. After the July observations
she will analyze fields measured in the 1.56 
m line.
Kester Allen, Amherst: Kester is working with Matt Penn studying the temporal behavior of the Helium 1083-nm line. They are examining variations in Doppler shift, equivalent width, and line strength associated with p-modes. They are also collaborating with Karen Harvey in a study of velocity perturbations and line asymmetries associated with X-ray bright points seen in Yohkoh images.
Eric Bell, Glasgow: Eric is working with Frank Hill on the GONG project. He is studying Modulation Transfer Functions (MTFs) caused by the optical effects of atmospheric turbulence on the GONG observations. He is designing software to characterize the MTFs over the broad range of seeing conditions encountered by the GONG instruments.
David H. Berger, Colgate: David is working with John Varsik on measurements of dust both in the air and on mirror surfaces as part of the CLEAR Engineering Study. Scattered light from dust would have a significant effect on the performance of the CLEAR telescope. In addition to monitoring the data from an airborne particle counter and looking for relationships between airborne particles and local weather conditions, he has also been preparing an experiment to study the distribution of dust particles on mirror surfaces. Software David has written allows these distributions to be measured automatically from digitized video images. David will also participate in nighttime observations at the Evans Solar Facility. These observations will measure the point-spread function of the coronagraph and measure the effectiveness of a coronagraphic telescope on nighttime objects.
Mark Fagan, Western Washington: Mark is working with Charlie Lindsey and Jack Harvey on NSO's program in local helioseismology. He is writing software to map GONG and SOHO images onto a flexible format that can portray them from any desired perspective in space. This flexibility in perspective is needed for the procedure that is used for computing acoustic power maps and Doppler acoustic maps of waves visible on the solar surface. Mark's software creates a mosaic of such images that allows computations of Doppler acoustic signatures covering a large fraction of the visible side of the solar disk.
Kathleen Ford, Rensselaer Polytechnic Institute: Kathleen (Saavik) is
working with Stephen Keil and K.S. Balasubramaniam on two projects this
summer. The first is to look at the twist (shear) in emerging magnetic
fields, using data taken at the Vacuum Tower Telescope with the
Advanced Stokes Polarimeter. Saavik is reducing the data, making
movies of the vector field, and looking for evidence that the field is
emerging in a twisted state. Saavik is also participating in a program
to make vector field measurements using a near-IR camera and two IR
etalons. She has looked at data from tests of the filter made in an
iron line near 1.56 m and near He 1083 nm. After the July observations
she will analyze fields measured in the 1.56 m line.
Inese I. Ivans, Toronto: Inese is working with Jeff Kuhn to use observations of the infrared corona to construct models of the density and temperature of the corona. She is using high spectral resolution data obtained during the eclipse in 1994 and IR photometry from the 1990 eclipse. From the IR Fe XIII emission lines and the Thomson-scattered IR continuum she hopes to develop an accurate understanding of physical conditions in the corona from the limb of the Sun out to about 2.5 solar radii.
Sean P. Matt, Arizona: Sean is working with George Simon analyzing full-disk Dopplergrams from the GONG network, in an effort to study the evolution of supergranules. In addition, he is comparing GONG and SOHO/SOI/MDI Dopplergrams and analyzing correlations among Dopplergrams, magnetograms, flow maps, and cork movies obtained by MDI on 7-8 March 1996 when the instrument was pointed at the south solar pole. Both full-disc (2" pixels) and high-resolution (0.6" pixels) MDI images are being studied.
Sarah O'Brien, University Of Arizona: Sarah is working with Mark
Giampapa on the analysis of the timeseries of high resolution, H
spectra of several classical and so-called weak T Tauri stars as
obtained with the McMath-Pierce solar-stellar spectrograph. She is
studying the line profiles to assess the nature and time scale of
variability, including the determination of whether any periodic
variability is present.
Abigail Paske, Pomona College: Abby is working with Bill Livingston on two diverse projects. She is analyzing observations of the high-excitation CI line at 538 nm in integrated sunlight for variations in Doppler velocity over the solar cycle. She has also obtained some high-quality images of the solar granulation at the McMath-Pierce Telescope on film and is analyzing these to measure the optimum resolution attainable by the telescope under good seeing conditions.
Ann D. Schiff, Harvard: Ann is working with Haoshing Lin using the precision full-disk photometric data from the PSPT (Precision Solar Photometric Telescope) prototype in Rome to study the problem of the active region energy balance. The project seeks to provide accurate, repeatable full-disk irradiance images. She is looking at the differences in center-to-limb luminosity variations in measurements that are being taken of Ca II K emission and blue continuum spectrum emission. Ultimately, she plans to use these results to help determine the physics of solar flux tube emergence and geometry.
Jeremy Tinker, Kansas: Jeremy is working with Thomas Rimmele and Louis Strous on a project to study the excitation of solar p-mode oscillations. Jeremy is analyzing narrow-band filtergram data taken at the Vacuum Tower Telescope with the Universal Birefringent Filter. He is studying acoustic events, which are observed in the high-resolution velocity data derived from these data. Acoustic events provide the acoustic energy needed to power the p-mode oscillations and are generated by granular convection. Jeremy's goal is to gain a more detailed understanding of the mechanisms that cause the events.
Wayne Winters, University Of Missouri-Columbia: Wayne, working with Harry Jones, is developing software to replace the current real-time reduction code for the Helium 1083-nm line at the NSO/NASA Spectromagnetograph. The new code will routinely compute Doppler velocity and line depth as well as equivalent width and continuum intensity. Wayne is working on software to fit and remove nearby silicon and water-vapor lines that contaminate the wings of the helium line and is developing an algorithm to characterize its spectral asymmetry.
Steve Keil, Charlie Lindsey