Minkowski Hermann

Today, Jan 12, we remember Hermann Minkomski's death anniversary. Hermann Minkowski was a Jewish German mathematician. He used geometrical methods to solve problems in the special relativity theory of Einstein. Minkowski is perhaps best known for his foundational work describing space and time as a four-dimensional space, now known as "Minkowski spacetime".

See also my blog on Minkowski Diagram: https://pascalhilkensastropage.blogspot.com/2020/10/twin-paradox-minkowski-diagram.html

130.000 Visitors

 

Since the start of my blog on December 2012, I'm counting an amazing number of 130.000 visits to my blog. Thank you all for those visits in which I made a small contribution to promote astronony, solargraphy and related sciences.

Sun Full Disk AR3181 and AR3182

 

The Sun today, January 7, 2023 with Sunspots AR3176, 3177, 3180, 3181, 3182 and 3183. The picture was taken with DSLR Nikon D7500 on TAL200K with ND3.8 and OIII filter. The picture is a mosaic of two pictures which are combined using ICE (Image Composite Editor). Sharpening is done with IMPPG and final editing using CS4. False colour are added.

The Sun in OIII

Between the clouds I could take some pictures of the active Sun. Pictures taken using my OIII filter.

Setting: TAL200K f/8.5, Nikon D7500, ND3.8 filter and OIII filter

Software: CS4

Planetary Astronomy Book

Arrival of my book on how to observe and image planets.

My first halo in 2023

My first halo this year 2023. A very bright halo in Holwerd (Friesland, Netherlands)

My Blog Statistics - Visits & Posts

A visual presentation of my @blogposts and #visits to my Astro Page blog.