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A fireball at night, as bright as a cresent moon - 11.8.2017 at 23.49 Hollola Observation number 66137

Visibility IV / V

Pasi Lepola, Ursa (Etelä-Suomi)

The maximum of this year’s “meteorite storm” in Perseid is on the night between 12-13.8, but the weather forecast promises a different kind of storm, water and lightning for that night, i.e. not such a good roaming night. So when the night between Friday and Saturday was promised cloudless and warm weather, I decided to start trying to see if any ass would dare to show up in advance. I chose the exact same good boat beach as last year as last year. I also placed the camera on a tripod for almost the same footprints. I had learned a lesson from last year and chose a shutter speed of five seconds instead of 20 seconds (thanks to Mikko Peussa for the tip). I thought the assholes would stick to the camera cell better that way. Of course, I set the aperture as high as possible (f1.4) and the sensitivity with ISO800 forks. After that, I let the camera sing, forced by the wire shutter.

When the camera started working, I set out to tune a little to the side of another frame that was meant to experimentally photograph a timelapse. In it, as I fussed with Sony, I saw a beautiful fireball in the east on the horizon. Its flight took about a second until it faded to the horizon. The video tuning was interrupted and I went to check if the fireball had caught on the Canon cell. After all, it was found on the memory card in two pictures, because unfortunately its flight just happened to exchange two pictures. On the other hand, the first image must look precisely because the fireball has a clear tip. Otherwise, the ass catch was pretty soft, I didn't see any dim ass with the naked eye, and even the pictures bongas afterwards only a couple of dim lines (do not exceed the publication threshold). The main reason for the sluggish prey was the bright moon, which disturbed the wandering. It made the sky far too light for the description and not even the eyes adapted to the twilight properly.

Anyway, here are pictures (and zooms) of a night-like fireball. The line at the top of the image is not an ass but a shor drawn by a satellite traveling on the deck of the sky. The last image is the latter of the two images where the fireball was visible. It shows how a fireball fades to the horizon. See the original pictures on my blog, you can find them here .

More similar observations
Additional information
  • Accuracy of the given observation time?
    • 2 min difference possible
  • How long time did you see the fireball fly in the sky?
    • 2 seconds
  • How the flight of the fireball ended?
    • The fireball faded away
  • In which direction the fireball disappeared out of sight?
    • East
  • In which altitude the bolide disappeared from your sight?
    • Very low near the horizon
  • Brightness of the fireball
    • A fireball at night, as bright as a crescent moon
Technical information

Canon EOS 5D Mark IV, Sigma 20mm f1.4 DG HSM Art - 20mm, f1.4, 5s, ISO800

Comments: 3 pcs
Esko Lyytinen - 12.8.2017 at 21.25 Report this

Laitoin radiohavainnon ilmeisestikin tästä samasta tulipallosta:

Hienot kuvat !


Tero Sipinen - 13.8.2017 at 00.18 Report this

Hyvin on osunut, hienot otokset! Ja olen ihan samaa mieltä, valotuksen katkeaminen kesken lennon ei ole huono juttu ollenkaan, tekee (ensimmäisestä) kuvasta dramaattisemman, "tulipallomaisemman".

Pasi Lepola - 13.8.2017 at 21.32 Report this

Kiitos Eskolle ja Terolle kehuista. Käykääpä muutkin katsomassa Eskon erittäin mielenkiintoinen raportti. Se sisältää ainutlaatuista tietoa tästä perseidistä ja tulipallojen havaitsemisesta yleensäkin.

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