Abstract

The apparatus used by the Rome Astronomical Observatory expedition for the measurement of the extreme solar limb darkening at the total solar eclipse, on 7 March 1970, in Mexico, is described here. For the measurements, the method of Julius is followed. The apparatus consists of a photoelectric photometer with a mechanical chopper, which alternatively inserts the different color filters. The recording and command system is also described.

© 1970 Optical Society of America

Eclipse Instrumentation for the Solar Corona

D. H. Menzel and J. M. Pasachoff
Appl. Opt. 9(12) 2626-2630 (1970)

Studies of Coronal Lines with Electronic Cameras During the Eclipse of 7 March 1970

B. Fort
Appl. Opt. 9(12) 2643-2647 (1970)

Photon Counting During an Eclipse

S. R. Weart
Appl. Opt. 9(12) 2650-2652 (1970)

Pseudo-Random Binary Sequences for Multiplex Codes

Th. de Graauw and B. P. Th. Veltman
Appl. Opt. 9(12) 2658-2660 (1970)

Color of the K Corona

D. E. Billings
Appl. Opt. 9(12) 2631-2634 (1970)