La Terra come osservatorio astronomico: la correzione al raggio solare medio nell'eclissi anulare del 22 settembre 2006

TL;DR

This paper discusses how observations of the 2006 annular eclipse can precisely measure the solar diameter, highlighting the Earth's role as an astronomical observatory.

Contribution

It presents calibrated observational data from the 2006 eclipse to improve measurements of the solar radius.

Findings

Accurate solar diameter measurement during the eclipse.

Calibration methods for eclipse observations.

Enhanced understanding of solar radius variations.

Abstract

The observation of a central eclipse from the umbral band and, even better, from its edge allows to measure the solar diameter with an accuracy up to a part over 100000. The data of the annular eclipse of 22 september 2006 observed from Kourou, French Guyane and their calibration are presented.