about Grigoris Maravelias
Author: <span>grigoris</span>

Author: grigoris

Moon (Lunar) phases

Just a quick note for moon (or lunar) phases. From Wikipedia / Lunar Phases (moon phases). Phase Northern Hemisphere Southern Hemisphere Visibility New moon Not visible, traditionally Moon’s first visible crescent after sunset Waxing crescent moon . Right 1-49% visible Left 1-49% visible afternoon and post-dusk First quarter moon Right …

Period04 and .sh files

If you have any difficulty to find it just go here: Period04 “Period04 is a computer program especially dedicated to the statistical analysis of large astronomical time series containing gaps. The program offers tools to extract the individual frequencies from the multiperiodic content of time series and provides a flexible …

Welcome…

… to an online notebook about anything related to Astronomy through my experience (from theory to computers, from hints to tutorials, from etc to etc!). Enjoy!