UPDATED: 10. MAY 2016, AT 14:09

The transit of Mercury across the Sun seen also in Slovakia

The transit of Mercury across the Sun on the afternoon of May 9 will be visible also in Slovakia.

Image by NASA and the ESA's Solar and Heliospheric Observatory of an earlier (2006) Mercury transit.Image by NASA and the ESA's Solar and Heliospheric Observatory of an earlier (2006) Mercury transit. (Source: AP/TASR)

This rare phenomenon occurs about 13 times in a century. The next chance will be in November 2019 but it will be only partially visible. The next fully visible transit will take place in 2032.

The spectacle begins at 13:12 on May 9 and ends at 20:40. i.e. after sunset, the TASR newswire wrote. “Observers from western Slovakia are slightly advantaged against those in the east, as in the west the Sun sets down 23 minutes later,” Pavol Rapavý of the Slovak Association of Astronomers told TASR. “As the angular diameter of Mercury is small, we will not be able to see it without a telescope, as it will be 157-times smaller than the seeming diameter of the Sun.”

The safest way to observe the phenomenon is a projection in a darkened room. “With the Sun having a diameter of 25 centimetres, Mercury will be a small black disc with a diameter of only 1.6 millimetres,” Rapavý said. “If we want to observe it directly, we put a good-quality filter in front of the telescope objective lens, e.g. the visual foil Astrosolar. The recommended minimal magnification is 50 times.” 

Top stories

News digest: Ex-special prosecutor found guilty, while critical journalists charged

Ex-special prosecutor sentenced to 14 years. Several politicians critical of charges against Denník N journalists. Travel to Spain more complicated.


6 h
Pope Francis and President Zuzana Čaputová at the airport.

Pope brings message of unity to a country in turmoil

It was nice while it lasted. Which wasn’t long.


10 h
Journalist Monika Tódová

Charges brought against two Denník N journalists

The criminal complaint was submitted by ex-journalist-turned-spy Peter Tóth.


13 h
Slovak cyclist Peter Sagan at the last stage of Around Slovakia.

Slovak cyclist Sagan wins Around Slovakia

He triumphed despite failing to win any of the five stages.


13 h
Skryť Close ad