Penumbral Lunar eclipse 10/.11.2.2017 was not visible because of clouds

Observed phenomena: Lunar eclipse
Type of eclipse: Penumbral Lunar eclipse
Type of observation: Negative
Date and time: 10./11.02.207, 22:30-01:00 UT
Observing place: Turku, Finland
Observing conditions: Totally cloudy sky during my whole observing session, 8/8
Observing instruments: Camera: Canon EOS 1100D

I was not able to observe this penumbral Lunar eclipse because of thick and persistent cloudcover that prevented me to see the eclipse. The cloudcover was a bit thinner before the beginning of the eclipse, and I was able to see the Moon through the clouds, but the clouds got thicker before the onset of the eclipse, and it was totally cloudy from the beginning of the eclipse until maximum eclipse, when I gave up observing. And I have a very good reason to assume, that it was cloudy also from the maximum eclipse to the end of the eclipse.

Here is a photo that I took for documenting purposes:

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It was totally cloudy during the maximum eclipse @ ~00:45 UT.
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Penumbral Lunar eclipse 16.9.2016

Observed phenomena: Lunar eclipse
Type of eclipse: Penumbral Lunar eclipse
Type of observation: Positive
Date and time: 16.09.2016, 17:24-20:55 UT
Observing place: Turku, Finland
Observing conditions: Clear sky (1/8, only some clouds in southern horizon, but the clouds didn’t cause problems)
Observing instruments: Camera: Canon EOS 1100D, Telescope L80/400mm (3” refractor)

Penumbral Lunar eclipse of 16th of September 2016 was well visible from beginning to end in Turku, Finland. I was observing the event with Linda Laakso in Uittamo district of Turku.

This penumbral eclipse was deeper than the one in October of 2013. During this eclipse, the penumbral magnitude was 0,93 whereas in the eclipse of October 2013 it was only 0,79. The penumbra was obvious in photographs, and it was also weakly visible visually. Visually it became visible around 18 UT, about hour before maximum eclipse.

The penumbra was visible also through the finder of my camera (that was attached to my telescope), and through the finderscoope of the telescope and small binoculars. I also noted, that the penumbra was easier to observe through window glass, when the lights were on in the room. By doing this, window glass acted as a lunar filter and it helped to reduce the bright glare of the full Moon and to enhance contrast. In the photographs, the penumbra become also visible around 18 UT.

When photographing this event, I took the photos with exposure time of 1/160s (with ISO 100). I noticed, that most of the photos were overexposed, at least for the lower limb of the Moon. Nevertheless, I was able to enhance the contrast of the photos with Paint Shop Pro, and by doing so, to make the photos better. From this I got a reminder of the importance of using different exposure times when photographing the Moon or Lunar eclipses. It is possible then choose the best photos later.

But anyway, I’m happy and thankful for being able to witness this celestial event! The next event in the sky of Finland is in 11th of February 2017, and it’s going to be similar penumbral eclipse like this one.

Below you can see my photos from this penumbral eclipse:

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Maximum eclipse @ 18:54 UT
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A serie of photos demonstrating the progress of the eclipse. In the last photo, there were some Sc clouds in the sky partially obsuring the Moon, the clouds are visible as a darkening in the lower limb of the Moon.

Penumbral Lunar eclipse of October 2013 was observed in Finland

Observed phenomena: Lunar eclipse
Type of eclipse: Penumbral Lunar eclipse
Type of observation: Positive
Date and time: 19.10.2013, 02:30-05:00
Observing place: Turku, Finland
Observing conditions: Variable cloudiness, clear sky during maximum eclipse
Observing instruments: Camera: Canon EOS 1100D, Telescope: L102/1000mm (4” refractor)

A penumbral Lunar eclipse was observed in Finland in 18./19.10.2013. I observed the eclipse from 02:30 to 05:00. During maximum eclipse, the penumbra was visible as a slight darkening in the southern edge of the Moon.  In the very end of the eclipse, no darkening was visible anymore. This is clearly visible from the comparison photo that I made. In this comparison photo, the left hand side photo was taken @ 02:50 during the maximum eclipse and the one in the right hand side was taken @ 04:56 when the eclipse had just ended.

Weather during the eclipse was quite variable and unstable, during the course of the eclipse, several cloudy periods with some showers happened. Luckily the sky was totally clear during the maximum eclipse and it was possible for me to observe the eclipse!

About the break of Celestial Sphere: in my last message I stated that Celestial Sphere  would be on a total break from blogging until spring 2014. But now I feel that I could write some postings every once in a while about the most interesting Celestial events and phenomena that I have been observing. But most likely I’m going to write posting quite infrequently.