The Astropixels.com ephemeris data extractor

Astropixels.com ephemeris data extractor

I would like to introduce the new tool, whose goal is to extract the ephemeris data from the Astropixels.com service.  Before I start to describe the major features of my program I would express a big thanks to Fred Espenak the author of this platform. Fred Espenak is already a retired American astrophysicist, whom we … Read more

Astrophotography with Sigma 150-600mm DG OS Contemporary and dedicated teleconverters

Moon Sigma 150-600 Contemporary Nikon

The summary of my amateur test with a Sigma 150-600mm DG OS Contemporary lens and two teleconverters TC-1401 and TC-2001 includes the astrophotography section. I wanted to check this lens in terms of its ability to capture celestial objects. The fundamental difference between celestial objects and terrestrial objects is, that these first are in motion, … Read more

H-Alpha filter in an exceptional observations of solar phenomena

Mercury in H alpha near Sun

In this short post, I would like to share with you my ideas, on how can we use the Hydrogen-alpha filter for solar observations during exceptional situations. The situations, that I am going to take into account are mostly solar eclipses, but also internal planet transits.  We have less than 2 months to Mercury transit … Read more

The movement of prominences against the lunar disk during total solar eclipse

TSE 2017 prominence movement

Except for many phenomena related to the total solar eclipse, that I observed away from the Sun there is one, which is worth attention. This is a prominences movement against the lunar disk, as we can observe during totality. As we know, everything moves in the sky. A fleeting solar eclipse is an effect of … Read more

Photography of the Sun through a natural filters

Sun through fog

Gazing at the Sun with the naked eye is dangerous. Much more dangerous is watching the Sun through instruments like binoculars or telescopes without a filter! It causes serious eye damage, which is a retina burn and blindness for the rest of your life. Basically, there are two types of solar filters: white light and … Read more

Horizontal visibility as the main factor of long-distance observations, part 1 – weather, astronomical and optical elements

Navajo Mt Horizontal visibility

This article is sort of a continuation of issues related to light scattering in the Earth’s atmosphere as well as haze presence. These subjects are closely associated with each other, so some stuff presented here can be pretty much similar and it will be developed on the grounds of my previous articles. This 2-partial article … Read more

ISS transit across the Sun & Moon

ISS and Atlantis shuttle on solar disk

The International Space Station (ISS) is a habitable artificial satellite in low Earth orbit. This is the largest human-made body in low Earth orbit. The width of ISS is 108.5 m and its length is 72.8 m. It orbits about 400 kilometers above the planet so it can often be seen with the naked eye … Read more