view Abstract Citations (1) References Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Sunspot photographs from the stratosphere. Bahng, J. D. R. ; Danielson, J. B. ; Rogerson, J. B., Jr. ; Schwarzschild, M. Abstract The i~-inch telescope used during the balloon flights in 1957 has been modified by adding a television link so that the astronomer on the ground can see what the telescope is photographing, and by adding a radio command so that the astronomer can focus the telescope and direct it to any place on the solar disk during the flight. On the first flight this season the television and command links worked satisfactorily but instrumental vibrations and dust on optical surfaces limited the number and usefulness of the high- definition photographs obtained. However, before the next flight both these disturbances were greatly reduced and on the second flight (Aug. 17, 1959) a large number of high quality photographs was obtained. Time sequences were taken, both of granulation far from sunspots and of sunspots with their immediate surroundings. The time variations of the granules as well as of the penumbral filaments are clearly visible. A highly preliminary inspection of the photographs suggests that the granulation directly adjacent to sunspots does not seem to differ strikingly in size or lifetime from those in undisturbed regions. Project Stratoscope is sponsored jointly by the Office of Naval Research and the National Science Foundation. Princeton University Observatory Princeton, N. J. Publication: The Astronomical Journal Pub Date: 1959 DOI: 10.1086/107987 Bibcode: 1959AJ.....64Q.323B full text sources ADS |