The aspect of light reflection in the long-distance observations

Northern Ireland seen from Helvellyn

This article presents the result of the longest distance observation in my life. Because it was an effect of the light phenomenon, not widely discussed by myself so far I decided to develop this topic, because of its influence on the far realing views during some specified conditions (tick haze trapped in low-level of the […]

The role of contrast in ability of human vision

Stevens brightness law

The contrast issue has been mentioned in this article, and either during the description of the role of horizontal visibility in long-distance observations. Because the information is not sufficient enough for my further studies I would like to point out more matters arising out of the contrast in a general sense. These elements are very … Read more

How bright the starlight is?

Albany, WA, Starlight

A vast majority of people around the World don’t realize something like starlight. Nowadays, when skies are highly polluted with light, most people cannot even see the Milky Way in the sky. It’s known history, that during a huge power cut in Los Angeles in 1994 people were calling authorities, asking them what is this … Read more

Top 21 things to see during solar eclipse

Total solar eclipse 2017 Wyoming Riverton

At the finish of my considerations about the solar eclipse phenomena observations, done during the last total solar eclipse in the USA as well as another few partial solar eclipses, which I have been fortunate to witness in my life, I would like to summarize all things and put them in one piece. I was … Read more

A short adventure with lunar eclipse

Total lunar eclipse 2019

A total lunar eclipse occurred recently on Monday 21st of January (Pic. 1). For me, it was the next opportunity to see this rare phenomenon, especially because I couldn’t make it in July 2018, due to thundery weather. This time the weather forecast seemed to be more favourable a few days before the eclipse, although … Read more

Light level measurements during total solar eclipse

Total solar eclipse 2017 Wyoming

The illuminance level and sky brightness are very important elements of solar eclipse phenomena because both are clearly noticeable by the observer along with his eye adaptation. When the eclipse phase is deep and turning into totality, the light level changes drastically, much quicker than on any other occasion. It makes the solar eclipse one … Read more

What is a light transition? What examples of it can we see?

Starburst effect light transition

Light is omnipresent in the Universe and the environment. This is electromagnetic radiation, that can be detected by the human eye. I have written more about the light and the ways of measurement in this article. Now I would like to describe a very common process, occurring both in the Universe and in Earth’s atmosphere, which … Read more

Why the haze is an important weather factor, part 2 – impact on visibility and light scattering

Haze impact on light scattering

This writing is a continuation of a whole article about haze as an important weather factor. Previously I have described the basic types of haze and I drew attention to the impact the atmospheric aerosols on human health. Now, in terms of the continuation, I would like to describe the impact of haze on the … Read more

Light scattering in the Earth’s atmosphere part 3 – clouds, haze and surface

Light scattering on clouds

Previously I have described the light scattering mechanism on the smallest particles of the Earth’s atmosphere, where mainly the Rayleigh Scattering plays a role. Now is the time to round off this whole article and say something more about a different group of elements, that also contributes to the light scattering process. There are bigger … Read more

Light scattering in the Earth’s atmosphere part 2 – why is the sky blue and how the sky colour change?

Light scattering in the atmosphere

When we ask ourselves why the sky is blue we can think about the most important type of light scattering in the Earth’s atmosphere. This is Rayleigh scattering. I was writing about this type of light scattering on some occasions, like watching the solar eclipse through the webcams or wondering about the Martian sky. Today … Read more

Remote observation of the total lunar eclipse

Total lunar eclipse 2018

Since I bought the DSLR camera I dreamt about the total lunar eclipse observation. I wanted to repeat my observation scheme on different, much better equipment. Recently I observed the total lunar eclipse in 2015 with a compact camera only. Therefore the total lunar eclipse occurring on Friday evening 27th of July 2018 was a … Read more

Light scattering in the Earth’s atmosphere part 1 – scattering and related phenomena

Light diffraction on clouds

1. INTRODUCTION My deep interest in the light scattering in Earth’s atmosphere arose out of my observations of the behavior of the Earth’s atmosphere, especially around sunrise, sunset (golden hour, blue hour, twilight), and during eclipses. I like to observe the weather phenomena and atmosphere response to environmental phenomena both live and remotely. Due to … Read more

What is the colour of Martian sky?

Martian sky NASA jpl

The Mars Exploration Program has been launching for around 20 years since the first probe Mars Pathfinder done by NASA landed on the Red’s Planet surface. For this time another four rovers touched down on the Martian ground: Spirit & Opportunity (2004), Phoenix  (2008), and Curiosity (2012). All of those missions beamed many photos of … Read more

Total solar eclipse vizualisation on Google Earth, part 2

Solar eclipse visualization Google Earth

<<< Read the 1st part of The solar eclipse visualization on Google Earth In the 1st part of this article, I showed you how to create the “umbra” in Scribble Maps and use it in Google Earth as a .kml file. Here I would like to demonstrate step by step how to create a pretty … Read more

The remote observation of partial solar eclipse

Partial solar eclipse Argentina

I would like to show my observation output. The last solar eclipse was visible throughout the southern part of South America in the morning and next in the western part of Africa during the evening. This eclipse was annular, so Moon’s disk was too small to fully cover the Sun. Eventually, the observer could see … Read more