Abstract
The successful development of the digital SHG has been built on a long history of spectroscopy, spectroheliographs (SHG) and visual spectrohelioscopes (SHS) as discussed in Chap. 4. In this chapter we will briefly review the current status of the visual SHS as implemented by amateurs. It’s fair to say that the complexity of the SHS, and the large focal lengths required to obtain acceptable visual results has worked against the ongoing development of the SHS. Fred Veio’s construction notes for the SHS over the past 30 years have not substantially changed; the basic design philosophy and implementation of the early constructors still being used today.
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Further Reading
Sidgwick. J.B.: Amateur Astronomers Handbook, Faber and Faber (1971)
Ingalls, A.G., (Ed): Amateur Telescope Making Vol1. Scientific American (1980)
Ingalls, A.G., (Ed): Amateur Telescope Making Vol2. Scientific American (1978)
Sky and Telescope, 34, p329 (1967)
Ibid, 39, p215 (1970)
Mills, A.A.: “Heliostats, Siderostats, and Cœlostats: A review of practical instruments for Astronomical applications”, JBAA, 85, p 89 (1985)
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Harrison, K.M. (2016). The Spectrohelioscope (SHS). In: Imaging Sunlight Using a Digital Spectroheliograph. The Patrick Moore Practical Astronomy Series. Springer, Cham. https://doi.org/10.1007/978-3-319-24874-5_11
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DOI: https://doi.org/10.1007/978-3-319-24874-5_11
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