An atlas of sunspot umbral spectra in the visible from 15,000 to 25,500 cm⁻¹ (3920 to 6664 Å)
By: L. Wallace and K. Hinkle, W. Livingston
Contributors: Hinkle, Kenneth; Livingston, W. C. (William Charles), 1927-
Series: N.S.O. technical report -- #05-001; NSO technical report -- 05-001
Publisher: National Solar Observatory
Published: 2005
Place of publication: Tucson, AZ
Language: eng
Number of pages: 210
Subjects: Sunspots; Spectra; Solar Spectrum
Notes: Chiefly charts.

Cover title.

Includes bibliographical references (p. 9-13).