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As many people are contacting me regarding the next moon eclipse. Here is a little sum up of what will happen in one week, during the night from 20th to 21st January.

A lunar eclipse occurs when the Earth is between the Sun and the Moon. The Earth casts a reddish shadow on the moon. Because of the alignment of the Sun, the Earth and the Moon this can only happen when the moon is full. And it will be visible exclusively during the night. The lunar eclipse last for a few hours. Thus, it is visible from approximately half the world. From the night side of the planet during the eclipse.

Here is the timing of the next lunar eclipse as it will be seen from Gran Canaria Island. Because it hapens during the second half of the night we will not organise any special event for this lunar eclipse at astroGC.

21/01/2019 at 3:45
21/01/2019 at 4:20
21/01/2019 at 5:10
21/01/2019 at 6:00
21/01/2019 at 6:30


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The Gran Canaria island is said to be a "miniature continent". It has many different landscapes. The weather can also be very different from one point to another. Actually the weather IS usually different in the South, the North, East, West or Center. Having a cloudy sky in Maspalomas area this does not mean the top of the island is cloudy as well.





Case A: Trade winds blowing. Very usual during summer time.
Case B: Storm entering the island from South-West. This happens more often during winter.
Case C: Low clouds (the top of the island is clear).
Case D: Calima. This is dust coming from Sahara desert.

Yesterday, 29 December 2018 we had a case similar to C. The sky was completely covered in Maspalomas and Puerto Rico area during the evening and at night. It was also covered in the East and North of the island. Nevertheless this were low clouds.

The astroGC astronomy excursion took place despite of the weather being a bit uncertain. At astroGC, guests do not have to pay if the weat…
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We wish you a merry Christmas and clear skies for 2019 !



Picture of the moon taken yesterday from Presa del Mulato, Gran Canaria.during the astroGC astronomy workshop.
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At this time of the year, the earth crosses the orbit of an asteroid called Phaethon. The orbit of the asteroid is quite "dusty". Debris from Phaethon enter Earth’s atmosphere at high speed (about 10-15 km/s) and produce shooting stars from a radiant point near Castor star in Gemini constellation. This is the annual Geminid meteor shower.

This days, at night, mostly after midnight, you should see many shooting stars.

Yesterday night with the group we saw quite a few. I decided to use my camera pointing randomly in the sky and take pictures.

I was still adjusting the camera to take the first picture when a huge meteor crossed the sky. This one WAS NOT related with Phaethon as it was not crossing the sky from Gemini.

I shot and I could immortalize the tail of the "falling star".

Here you are.







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At astroGC we use free software for post processing of images. The camera is setup to save a RAW format of each picture. This produces extremely large files as it just save all the infomation from the camera chip. But this format alows to retouch the color balance, exposure and hundreed of more parameters. We do this treatment with RAWTHERAPEE, a free program under GNU licence. Afterwards, a last retouch can be performed with GIMP, also free / GNU licenced program. Thanks to both companies for developing such powerful softwares.

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Here are two night pictures taken in the nearby of Presa de Las Niñas (Gran Canaria) with exactly 24-hours interval. The sky can be completely different from on night to the other.


The moon rising on the peaks of Gran Canaria, 24 November 2018 at 8:15 pm


Spectacular starry sky before the moon rises. Gran Canaria, 25 November 2018 at 8:15 pm



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Please help! I am looking for a name for this telescope.

It is big. Made in Gran Canaria by astroGC.

¡Ayudenme por favor! Estoy buscando un nombre para ese telescopio.

astroGC, 4 November 2018 at Roque Nublo