Sun in H-Alpha light (656.23 nm) 23 august 2024.
A family portrait: AR 3796, AR 3792, AR 3790
Stack of the best 750 frames out of 1500
Simone Tranquilli
Amateur astronomer, I love science, computers and operating systems (preferably Unix-like) since childhood.
I try to do my best in astrophotography, with quite varying results. Mostly a metalhead.
Sun in H-Alpha light (656.23 nm) 23 august 2024: AR 3790
Stack of the best 1000 frames out of 10000
Sun in H-Alpha light (656.23 nm) 23 august 2024: AR 3801
Stack of the best 1000 frames out of 10000
Sun in H-Alpha light (656.23 nm), 23 august 2024: AR 3799
Stack of the best 1000 frames out of 10000
AR 3800, H-Alpha light (656.23 nm), 23 august 2024
Stack of the best 1000 frames out of
10000
The Sun in H- Alpha light (656.23 nm), 23 august 2024: arc shaped prominence.
Stack of the best 1000 frames out of 5000
The sun in H-Alpha light (656.23 nm), 22 august 2024.
The evolution of a large prominence: a timelapse.
Time: 6:57 - 7:57 UT
240 frames, 15 seconds delay
Higher quality video: https://astrob.in/jt5c0q/0/
(still image of the same prominence: https://astrob.in/02i653/0/ )
Simone Tranquilli boosted:
The Unix original choice of a 32bit time_t ending in 2038 seems particularly inspired today.
The Sun in H-Alpha light (656.23 nm), 22 august 2024. Prominences.
A couple of images I did manage to save from a session during a quite bad morning for imaging the Sun, due the poor seeing and the sky transparency. I did like the results, though.
Details and links to the better quality images in the alt text.
#astronomy #astrophotography #sun #halpha #prominence #chromosphere
(4) 2013 note:
But I'm here on Planet Earth, and I will not have a chance to see an event like this, because I have no way to get out of my home planet. The only explanation that I could find, then, is that in some way I'm looking at myself. I'm looking at all my fragile, ephemeral existence as a human being, symbolically enclosed in the black circle that slowly disappears in spite of my will.
(3) 2013 note:
I often wonder why I think that these images are special, I wonder why I find them so beautiful. is a feeling that lasts a few moments, but it is so intense and engaging.
A transit is not so special, I could observe a transit of Venus across the Sun at any moment, even now, if only I could find elsewhere in the Solar System. Other human beings will observe planetary transits the Sun after me, perhaps from other places in the Solar System.
(2) 2024 note:
I'm thankful to myself for the words in this short video, because they were purposedly written and conceived to shortly talk to someone in the future about something - and about someone - from the past. For now they did talk just to myself from the past, are still talking to my present self, and maybe they did talk to someone else too. Hopefully they will talk again and again, until 2117. That would make me happy, even if I will not be there anymore.
(1) 2024 note: after about 12 years I'm still here and whatever could happen to me tonight, tomorrow morning, in the next weeks or in the next 50 years, I'm glad I had the opportunity to witness with my own eyes such a simple yet beautiful event. I'm glad and thankful to myself that I managed to transpose it in such an awkard video.
A short video I made for the transit of Venus across the Sun, in the morning of June 6, 2012, introduced by some personal reflections.
Instrumentation: 20 mm f / 5 Newtonian telescope on a Skywatcher Heq5 mount, 0.5X focal reducer, Astrosolar filter and Meade LPI camera.
Location: Pabillonis, Sardinia, Italy.
https://youtu.be/u8U4CF4X4nE?feature=shared
#astronomy #sun #venus #transit #planet #existence #immortality
The Moon, 21 august 2024 (2/2)
Details and links to higher quality images in the alt text.
The Moon, 21 august 2024 (1/2)
Details and links to higher quality images in the alt text.
Waning gibbous Moon, 21-22 august 2024.
UV-IR cut and IR-pass filter comparison.
Each image is composed by two panels stitched together.
Details and links to higher quality images in the alt descriptions.
Sun in H-alpha light, 21 august 2024 -afternoon session (2/2)
Links to the high res images in the alt text.
#astronomy #astrophotography #sun #sunspot #prominence #chromosphere #halpha
Sun in H-alpha light, 21 august 2024 -afternoon session (1/2)
Links to the high res images in the alt text.
#astronomy #astrophotography #sun #sunspot #prominence #chromosphere #halpha
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