Home » Eventos » Lunar eclipse from ESAC, 21 Jan 2019 (versión en ingles)
21
Enero
2019
Lunar eclipse from ESAC, 21 Jan 2019
(versión en ingles)

Moon eclipse, 21-Jan-2019, from ESAC.

CESAR team witnessed and recorded, on 21st January 2019, a lunar eclipse from its location at ESAC (European Space Astronomy Center). We composed this timelapse with 100 of those images. A moon eclipse happens when the moon passes into Earth's shadow (What is an eclipse?). Unlike with solar eclipses, you need no special equipment to observe lunar eclipses. You can safely view the eclipse directly with the naked eye. 

The eclipse started at 03:36 local time with the usual penumbral part. At 04:34 the dark umbra touched the moons'disk. The moon went into total umbral eclipse at 05:41, for 62min duration until 06:43 CEST. At 07:50 the total eclipse ended. The Moon completely left the Earth's shadow penumbra at 08:48, when the Sun was already rising. 

In the next composite image you can have a feeling of the actual extent of Earth's shadow, and the actual path that the Moon took through it.

  • The Earth's shadow is artistically composed by rotating 7 partial eclipse images to complete the shadow circle. This is not a real shadow view, but provides a nice feeling of how big the Earth's umbra is, compared to the Moon diameter. It also helps as a background for placing the umbral images. Earth's umbral shadow is about 2.6 times the diameter of the Moon.
  • The Moon's actual path is realistically represented, though, in the umbral part. The 3 reddish images are taken with longer exposures, at the start, middle and end of total umbral eclipse. These are then placed over the artistic shadow background. Time increases from right to left, as the moon travels through the shadow. Note that the last partial image on top right is as well correctly placed.
  • The path of the Moon in this 21-Jan-2019 eclipse was not central, and that is why the red moon had a bright whitish limb. This bright zone rotated around the limb in the 1h umbral time, following the closest point to the umbral circle. The grading of colors is very different to the more central eclipse that ocurred on Jul 2018.

Composite image showing the Earth's shadow extent and the total eclipse path (video here).

Two of the star occultations in our data are clearly visible in the images. They are highlighted here. The first was an occultation ingress (video ingress) of star HIP 39869 in Cancer, at 4:56 UTC. This is a 8.50 magnitude star, 5930 light years away from Earth. The second was an occultation egress (de-occultation, video_egress) of star HIP 39749 in Cancer, at 05:21 UTC. This is a 7.65 magnitude, 309 light years away from Earth.

 

Star occultations during the Moon eclipse, 21-Jan-2019, from ESAC. Left: ingress at 4:56 UTC, HIP 39869 Cnc (video ingress). Right: egress at 05:21 UTC, HIP 39749 Cnc (video_egress).

 

Eclipse timelapse.

 

But the Moon does not go fully black during eclipse. It turns deep red because some of the sunlight passing Earth's atmosphere is refracted around our planet's limb and hits the moon's surface. Earth's air also scatters more shorter-wavelength light (in colors such as green or blue); what's left is the longer-wavelength, redder end of the spectrum. It is the same phenomena responsible for sunrises and sunsets: actually the Moon's blood color comes from all the sunrises and sunsets taking place at the same time around the world along the terminator line (day-night boundary).

 
 

The eclipse as seen from ESAC (images Manuel Castillo). Canon EOS550D. Telescope CG8 20 cm aperture.

 

For the event, the CESAR team set up several cameras and telescopes:

- 1 newtonian telescope CG8 20 cm aperture with a Canon EOS550D camera

- the white visible Solar dome telescope (9cm aperture) was used with a Sony alpha 7 sII camera for livestream

If you want to know how to take images during a lunar eclipse, please look at this video produced with the CESAR equipment, and explained by CESAR personnel. 

 

The event streaming was recorded live in a experimental set-up.

You can re-watch the event in our youtube channel.

The event was followed by ESA_comms and ESAC-Spain comms (thanks Arantxa Alonso @ ESAC, Emily Baldwin and Claudia MIgnone @ ESTEC). CESAR worked on several news around the event :

 

The CESAR observing team, with some ESAC astronomy club members. Note the eclipsed moon at the top right)

Eventos relacionados
ESA Open Day 2019 en ESAC
Ven al Open Day de la ESA en ESAC y acércate al espacio, el 19 de octubre 2019 a partir de las 10:00h y descubre la Agencia Espacial Europea Leer más
19
Octubre
2019
Total Solar Eclipse 2019 (en)
The CESAR team completed successfully their observation plans for the Total Eclipse 2019 Leer más
02
Julio
2019
ESAC Star Party para el solsticio de verano
Organizado por el ESAC Astronomy Club Leer más
21
Junio
2019
Blood Moon: longest eclipse in a century (en)
CESAR team witnessed and recorded on 27th July 2018 the longer lunar eclipse in a century, from ESAC (European Space Astronomy Center). Leer más
27
Julio
2018
Taller de profesores en ESAC coordinado por CTIF & CESAR Team
En la semana del 18 de Septiembre del 2017, tuvo lugar en ESAC un nuevo taller para profesores de la Comunidad de Madrid, como fruto de la coordinación entre el CTIF y el equipo CESAR. Leer más
18
Septiembre
2017
Eclipse total 2017
El 21 de agosto de 2017, miembros del equipo ESA CESAR hicieron una emocionante expedición para observar el eclipse solar total, visible desde Estados Unidos. Leer más
21
Agosto
2017
Nuevo taller para profesores en ESAC organizado por el Equipo CESAR Team y CTIF
Del 6 al 9 de Febrero, el Equipo CESAR organizó un nuevo taller para profesores en ESAC. Leer más
06
Febrero
2017
La ISS cruzando la Luna
¿Has visto alguna vez la Estación Espacial Internacional cruzando la Luna? El equipo CESAR lo ha fotografiado para ti. Leer más
14
Enero
2017
Noviembre 2016 CTIF Workshop Curso 2 en ESAC
65 profesores han participado desde el 7 al 11 de noviembre en el CTIF workshop realizado en ESAC Leer más
07
Noviembre
2016
October 2016 CTIF Workshop Curso 1 en ESAC
65 profesores han participado desde el 24 al 27 de octubre en el CTIF workshop realizado en ESAC Leer más
24
Octubre
2016
Fiesta del solsticio de verano en ESAC
El 1 de julio se celebró la fiesta del solsticio de verano organizada por el club de astronomía de ESAC y el proyecto CESAR.
Leer más
01
Julio
2016
Super Blood Moon eclipse (en)
CESAR Team take videos and photos from ESAC and other places during early morning Leer más
18
Septiembre
2015