Epsilon Lyrae (the Double Double)
Taken by Roberto Ortu on July 30, 2024 @
Cabras, Sardinia, Italy
Click photo for larger image
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Details:
Epsilon Lyrae is a star system located in the constellation of Lyra, not far from the star Vega and well observable during summer nights. Its distance from the Earth is about 160 light years and, thanks to a good binocular, it can easily be separated into two components distant about 3 arc1 and called Epsilon 1 and Epsilon 2. At the telescope, at about 100x, it turns out that each of these is in turn a double star and for this reason the system is also called double double.
Epsilon1, visible on the right in the photo, is composed of two stars with magnitudes of about 5 and 6.1 and the orbital period is about 1700 years.
The stars in Epsilon 2 have very similar magnitudes of about 5.1 and 5.4 and an orbital period of 585 years.
The orbital period of the whole system is extremely long due to the huge distance between the two main components. There is also a fifth component around Epsilon 2, discovered in 1985.
Celestron 114/910 Newton
Camera QHY5L-ll-C
Filtro UV/IR cut
Sharpcap 4.1
AS!4, Registax 6, Astrosurface V1, Gimp
Time and date: July 30, 2024 01:58 UTC
Photographer's website:
https://www.instagram.com/ortu399/
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