Coin throw contest part I - galaxies

One may wonder how large are the objects presented in the blog. Actually they are huge - hard to imagine their actual size, but many people are also…


To catch a cosmic ray

Cosmic rays are very high energy particles that penetrate Earth atmosphere and sometimes even reach the surface. High energy means much, much higher…


Wood solid pier

Telescope pier with HEQ5 mount and 6 inches newtonian Setting up the components to start the night session took me about half an hour every night.…