Newest observations
-
Järvenpää, Glory on air
IV
29.3.2023 at 19.20 -
Vaasa, One halo form
I
29.3.2023 at 19.15 -
Lappeenranta, Several halo forms
II
29.3.2023 at 09.30 -
Kaarina, A fireball at night, brighter than the venus
III
28.3.2023 at 23.00 -
Helsinki, A fireball at night, brighter than the venus
III
28.3.2023 at 22.54 -
Helsinki, A fireball at night, as bright as a crescent moon
III
28.3.2023 at 22.54 -
Hyvinkää, A fireball at night, brighter than the venus
III
28.3.2023 at 22.54 -
Vantaa, Pähkinärinne, Abulfeda and Descartes
V
28.3.2023 at 21.30 -
Vantaa, Pähkinärinne, Promontorum Archerusia and Rima Ariadaeus
V
28.3.2023 at 21.27 -
Vantaa, Pähkinärinne, Maurolycus
IV
28.3.2023 at 21.25 -
Vantaa, Pähkinärinne, Moon and Mars
28.3.2023 at 21.13 -
Inari, A fireball in a twilight sky
III
28.3.2023 at 20.15
Contact information
Visibility III / V
Vesa Vasankari, Ursa (Länsi-Suomi)
I'll go back to last week's partial solar eclipse and show you a few pictures of an alternative way to observe the phenomenon. I noticed what I saw in the pictures quite by chance when I was removing all kinds of "shot from the hip" snaps from my cell phone.
If there are no tools other than a camera - that is, e.g. no filters - a valid method of verifying the phenomenon would seem to be to observe the change in the reflection inside the lens. That usually round reflection phenomenon in the pictures now appeared as a sickle and the only reason I came up with is that because there was a deficiency in the shape of the light source (the Sun), this was also visible in the lens reflection. In particular, the settings of the mobile phone camera would never be such that the Sun itself would not be completely overexposed when shooting directly towards it. But using this indirect method of observation, the eclipse could be verified.
If you were planning to take a series of pictures during the eclipse, you should obviously make sure that the camera lens is at the same angle to the Sun during the whole series of pictures. And since the Sun moves all the time, the lens should also move in the same proportion. Based on the snaps I have already taken, it is noticeable that the shape of the lens reflections taken at different angles is different. The closer the reflection can be positioned in the image to the light source, the more accurate the projection of the real event will be. Therefore, the actual degree of coverage of the eclipse could not be calculated directly from such a reflection, but the series of images taken would at least tell the relative progress of the eclipse. Even this method of observation is better than being left without any evidence in the absence of suitable equipment.
Desktop version of the site
Show the mobile version
Site development by the Skywarden team and E. Bruus.
© 2011- 2023 Ursa Astronomical Association. All rights reserved.
Privacy policy
Varsin kelpo tapa dokumentoida pimennys kännykällä.
Ja siinä mielessä äärimmäisen harvinainen havainto, että linssiheijastuksella on havaintoarvoa! :)
Olisiko peräti ensimmäinen lajissaan? Siis onhan havaintokuvissa useinkin lissiheijstuksia, mutta vain sivuosassa, ei-toivottuina sivutuotteina. Tässä linssiheijastus on pääosassa, ja nurinkurisesti; ilman linssiheijastusta kuvat eivät olisi ylittäneet julkaisukynnystä. Joskus näinkin :D
Saman huomasin. Ei pystynyt katsomaan kirkasta aurinkoa. Summassa kuvasin. Näitä heijastuksia löytyi sitten mistä sattuu. Paskat luontokuvat ryhmässä näitä ollaan esitelty ja naureskeltu. On nimittäin tosi hauskoja kuvia sinne tullut. Sirppi seikkailee monessa paikassa.