One night, two skies

9. December 2021

Have You ever wondered what exactly You can see during the astronomical night? The most common answer would be focused on some famous constellations, stars, or a specific part of the Milky Way. But because of the Earth’s orbit around the Sun, we can see more than only a single part of the sky except if You are standing on the poles of the Earth. But in two parts of the Year around equinoxes – here in mid-latitudes – more than one sky could be observed. And this image could serve as a good explanation of that situation. This photo was taken during one single night from 6th to 7th of March 2021- the panoramic picture on the right was taken at the beginning of the astronomical night – after dusk. The picture on the left was taken at the end of the astronomical night, just before dawn. With the same technique, equipment, settings, and post-process. After that, both were blended together into the 360-degrees final picture showing two different parts of the sky – winter and summer Milky Way observed in March 2021 from Slovak’s Low Tatras mountains. Even because using the H-alpha nebula filters, You can see not only the Milky Way and constellations but also objects generally hidden before our eyes – hydrogen emission nebulas in really fine details.
Annotated version:

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