Osservazioni dell'eclissi penombrale di Luna
Abstract
The penumbral lunar eclipses equilibrate the probability of occurrence of solar and lunar eclipses over several years, but they are often neglected in the media and in the observations because of the difficulty of their identification due to the high luminosity of the full Moon. Three methods are presented to reduce this luminosity and to detect the penumbral phase of the lunar eclipse: the reflection on glass and water, the double polarizer and the short exposure photographs with 400 and 800 ISO and 1/500s of pose.
- Publication:
-
Gerbertvs, International Academic Publication on History of Medieval Science
- Pub Date:
- May 2016
- Bibcode:
- 2016Gerb....9...91S
- Keywords:
-
- Lunar eclipse;
- penumbra;
- digital photography;
- image analysis