Transit of Europa, Ganymede, and Callisto

When you look at Jupiter through a telescope, you usually see four moons lined up with the planet. From time to time, a moon may pass in front of Jupiter’s disc in an event called a transit. A transit is a rare event since it occurs only when at least one moon lines up with Earth and Jupiter. On August 15, 2021, however, three of Jupiter’s four largest moons—Europa, Ganymede, and Callisto—passed in front of Jupiter, a very rare event which I have observed and captured using a small telescope.

Three of Jupiter’s four largest moons passed in front of Jupiter on August 15, 2021 (Legend: 1-Europa, 2-Europa’s shadow, 3-Ganymede, 4-Ganymede’s shadow, 5-Callisto, 6-Io). Image taken with a 4 inch f/9 refractor and an ASI533 camera, Philippines.

Related link: View all posts about transit
For a complete list of astrophoto images, click here.

Night Sky in Focus | Astronomy and Amateur Radio
© Anthony Urbano | Manila, Philippines

Transit of Io | August 2021

The Galilean moons may sometimes cross the disc of Jupiter as viewed from the Earth in an event called a transit. This image of the moon Io transiting Jupiter was taken on August 8, 2021, from Bacoor, Cavite, using a 4-inch f/9 refracting telescope and an ASI 533 astronomy camera.

Transit of Io

For a complete list of astrophoto images, click here.

Night Sky in Focus | Astronomy and Amateur Radio
© Anthony Urbano | Manila, Philippines

Total Lunar Eclipse | 26 May 2021

Total Lunar Eclipse imaged with a 4-inch f/9 refractor and a DSLR camera on May 26, 2021 in Bacoor City, Philippines. To watch our guided lunar eclipse observation (livestream), click here.

For a complete list of astrophoto images, click here.

Night Sky in Focus | Astronomy and Amateur Radio
© Anthony Urbano | Manila, Philippines

Mars Occultation | April 2021

The moon is also known to eclipse planets, and one such event involving Mars occurred on April 17, 2021, a relatively rare astronomical event visible in the southern part of the country. I was able to observe and photograph Mars before it was eclipsed or hidden from view by the moon, from Bacoor City, Philippines. Mars’s red hue and some lunar craters are visible in this photo.

For a complete list of astrophoto images, click here.

Related link: Lunar Occultation of Jupiter

Night Sky in Focus | Astronomy and Amateur Radio
© Anthony Urbano | Manila, Philippines

Total Lunar Eclipse | 2018

Total Lunar Eclipse January 31 2018
Total Lunar Eclipse taken with a 4-inch f/9 refractor and a DSLR camera on January 31, 2018 at the PAGASA Observatory in UP Diliman, Quezon City, Philippines

For a complete list of astrophoto images, click here.

Night Sky in Focus | Astronomy and Amateur Radio
© Anthony Urbano | Manila, Philippines

Solar Eclipse | March 2016

Image of the partial solar eclipse on March 9, 2016, taken with a 4 in f/9 Sky-Watcher 100ED refractor, a DSLR camera, and a solar filter.

For a complete list of astrophoto images, click here.

Night Sky in Focus | Astronomy and Amateur Radio
© Anthony Urbano | Manila, Philippines

Lovejoy C/2014 Q2 | January 2015

Comet Lovejoy C2014 Q2 taken with a 4 inch f/9 telescope and a tracking mount. The comet’s green coma and hint of its tail, are visible in this photo. Comets are difficult to image because they move relative to the stars, producing a trail. Processing software corrects for this drift and stacks the image of the comet without producing a trail.

For a complete list of astrophoto images, click here.

Night Sky in Focus | Astronomy and Amateur Radio
© Anthony Urbano | Manila, Philippines

Total Lunar Eclipse | October 2014

lunar_eclipse_8_october_2014_anthony_urbano
Total Lunar Eclipse as observed from Quezon City, Philippines on October 8, 2014, taken with a 4 in f/9 Sky-Watcher Equinox ED and a DSLR camera.

For a complete list of astrophoto images, click here.

Night Sky in Focus | Astronomy and Amateur Radio
© Anthony Urbano | Manila, Philippines

Jupiter Occultation | August 2012

The moon is also known to eclipse planets, and one such event involving Jupiter happened in August 2012. This event is called the lunar occultation of Jupiter, and is a relatively rare astronomical event. The event was visible throughout the country. I was able to observe and photograph it from Quezon City, Philippines, using a small telescope. To watch the video recording of this event, click here.

Lunar Occultation of Jupiter, August 2012

For a complete list of astrophoto images, click here.
Related link: Lunar Occultation of Mars

Night Sky in Focus | Astronomy and Amateur Radio
© Anthony Urbano | Manila, Philippines

Venus Transit | June 2012

A rare astronomical event occurred in June 2012, visible in the Philippines and widely documented among astronomy enthusiasts. This event is called the Venus Transit, in which the planet Venus, appearing as a small dot, is observed to transit or move across the disk of the Sun. Venus and a number of sunspots are visible in the photo. Special solar filters were required to safely view this event.

Venus Transit 2012

For a complete list of astrophoto images, click here.

Night Sky in Focus | Astronomy and Amateur Radio
© Anthony Urbano | Manila, Philippines

ISS | March 2012

Image of the International Space Station (ISS) as it passes 450 km above Manila at 4:59:01 am, March 15, 2012. The main body and the solar panels of the satellite are visible in this photo. Image taken with a 4 inch f/9 refractor with Canon 450D, 1/100 sec exposure at ISO 1600.

For a complete list of astrophoto images, click here.

Night Sky in Focus | Astronomy and Amateur Radio
© Anthony Urbano | Manila, Philippines

433 Eros | January 2012

433 Eros is the first asteroid to be studied with a spacecraft from orbit. Eros was orbited by Near Earth Asteroid Rendezvous several times before touching down in February 2001. This image of Eros was taken during its closest approach to Earth on January 30, 2012 using a 4-in f/9 refractor and a Canon 450D DSLR.

For a complete list of astrophoto images, click here.

Night Sky in Focus | Astronomy and Amateur Radio
© Anthony Urbano | Manila, Philippines

Total Lunar Eclipse | 2011

This photo was taken in December 2011, in Antipolo, Philippines, during a total lunar eclipse. The moon appears red during totality and as it dims (in contrast to a bright full moon), the faint stars surrounding the moon becomes visible!

2011 Total Lunar Eclipse | Sky-Watcher 4 in f/9 refractor

For a complete list of astrophoto images, click here.

Night Sky in Focus | Astronomy and Amateur Radio
© Anthony Urbano | Manila, Philippines

Transit of Io | November 2011

The Galilean moons may sometimes cross the disc of Jupiter in an event called transit. The satellite (white dot) is usually followed by the shadow (black dot) it casts on Jupiter. In this photo, Jupiter’s moon Io is already exiting, with its shadow still on the disc of the planet. Image taken on November 9, 2011 with a 4-inch f/9 refractor and a Logitech 4000 web camera.

For a complete list of astrophoto images, click here.

Night Sky in Focus | Astronomy and Amateur Radio
© Anthony Urbano | Manila, Philippines