Spectral photometry of selected areas of the lunar surface during maximum solar activity |
| |
Authors: | Joseph Sidky Mikhail Nabil Shoukry Awadalla Imam Ibrahem Ahmed |
| |
Institution: | (1) Helwan Observatory, Cairo, Egypt;(2) Astronomy Department, Cairo University, Egypt |
| |
Abstract: | Photoelectric observations have been carried out during maximum solar activity in order to investigate the variation of the brightness of the lunar surface with the solar cycle and to detect the possiblity of existing colour anomaly. The brightness data, using a wide-passband filter, do not show any evidence of variation with the solar cycle. No colour anomaly is found for the investigated lunar regions, and the doubt that has been felt by some investigators about the nonexistence of certain colour indices' variation with phase is not confirmed. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|