INAF - OACT GALLERY
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Picture of the day 28 March 2024  |
The spring is coming at the
Catania Astrophisical Observatory!
On March 22 2024, we
observed the flight of a swallow against the solar chromosphere,
which have many filament and Active Regions, at this time.
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P-greek filament eruption on 14 March 2024  |
On March 14 2024, we observed
the eruption of a filament in the the northern hemisphere of the
Sun, in a region without sunspots in the below photosphere. This
eruption gave rise to a CME and a G1-class geomagnetic storm in
the following days. The event occurred on Pi greek day, so we
called it Pi greek filament eruption.
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A X1.7 Flare on 22 February 2024  |
On 22 February
2024 we observed a very energetic flare occurent in Active
Reagion 13590. It was a X1.7 GOES class flare (start: 05:50 UT,
peak: 06:30 UT). Below we show the light curve determined using
the full disk images in the center of the Hα line.
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A large filament eruption on 12 February 2024  |
On February 12, 2024,we observed
the eruption of a large filament near the northeast limb of the
Sun, resulting in a CME and a G3-class geomagnetic storm in the
following days.Below we show the light curve determined using
the full disk images in the center of the Hαline.
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A Two Ribbons Flare on 16 February 2023
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On 16 february 2023 we observed
a two ribbon flare near the west limb. It occurred in active
region NOAA 13216 and was C9.0 goes class (start: 10:16 ut,
peak: 10:59 ut).Below show light curve determined using full
disk images center of Hα line.
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A Solar Eclipse on 25 October 2022 |
On 25 October 2022 we were spectators of an unusual event: the positions of the Sun and the Moon allowed us to observe a partial eclipse of the Sun. The Sun and the Moon have almost the same angular diameter when they are observed form the Earth. A total solar eclipse occurs when the Moon is exactly between the Earth and the Sun and projects its shadow on the Earth. If an observer is placed on the path of such shadow the Sun results totally obscured by the Moon. On October 25th we observed a partial eclipse: the Moon and the Sun were not exactly aligned and therefore only a part of the Sun was obscured by the Moon. In Catania the eclipse began at 09:36 UT, the maximum, with a darkening of the solar disk of up to about 13%, occurred around 10.31 UT. The event concluded at 11:27 UT. The next partial solar eclipse visible from some cities of Italy is expected only in 2025. The movie on the left represents the sequence of images of the solar disk acquired by the solar telescope of INAF - Catania Astrophysical Observatory. In the movie we show the solar chromosphere at a wavelength corresponding to the center of the Hα line (656.28 ± 0.25 nm). The raw images are recorded with a size of 2048 x 2048 pixels and a dynamic range of 16 bit. |