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, and W. Livingston
Series: N.S.O. technical report -- #00-001; NSO technical report -- 00-001
Publisher: National Solar Observatory
Published: 2000
Place of publication: Tucson, AZ
Language: eng
Number of pages: 155
Subjects: Sunspots; Spectra; Solar Spectrum
Notes: Chiefly charts.

Cover title.

"February, 2000"--P. 12.

Includes bibliographical references (p. 8-12).