Archive for April, 2013

Decimal fraction in Julian Date

Posted April 18, 2013 By grigoris

Julian Day is a convenient way to count continuously days since the beginning of a specific time (noon of January 1, 4713 BC). This was proposed by Joseph Scaliger in 1583, as the beginning of the Julian Period, which epoch started when the three calendar cycles were together in their first year (4713 BC, preceding […]

Comets from Skinakas

Posted April 2, 2013 By grigoris

A couple of experiments (with Manos Kardasis) on comets from Skinakas Observatory.  

Jupiter IR images from Skinakas

Posted April 2, 2013 By grigoris

I was able to take a series of IR images from Skinakas telescope and Manos Kardasis did all the job with the processing. Here are the results: