IERS has just announced that no leap second will be inserted into UTC at the end of December 2022 (https://datacenter.iers.org/data/latestVersion/16_BULLETIN_C16.txt). The number of inserted leap seconds (since the …
The chromosphere, as seen in many eclipse images and video, appears intensely white in its lowermost layers and then has a characteristic purplish pink hue for most of …
The Earth’s rotational rate is ever changing, due to a series of factors, mainly the effect of tidal friction caused by the Moon and the effect of the …
Leap Second: will there be one before the 2023 AT eclipse? Read more »
We aim to measure the photospheric radius of the Sun by recording an accurately timestamped video of the eclipse flash spectrum. The simplest way to add timestamping to …
Solar eclipses come in various forms, when classified based on their appearance and evolution over the Earth’s surface. We have total eclipse, annular eclipses and partial eclipses. And …
The 2023 annular-total solar eclipse: a geographical and meteorological overview Read more »
We are probably all familiar with the spectrum of solar light. Its most spectacular natural manifestation is probably the rainbow. Small rain droplets from a distant storm illuminated …
Dependency on the value of the solar radius of eclipse duration (2017 August 21st total solar eclipse – from Vale, Oregon) The value of the solar radius at …
The solar radius and its impact on eclipse computations Read more »
This article provides the description of an experimental technique to accurately time internal contacts, applied to the Total Solar Eclipse of Nov 3rd 2013.
