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08/12/2019

Iceland is an incredible destination to see nature. At the end of August, the conditions are excellent to enjoy the amazing landscapes of the island; the displacements are easy without snow in the highways and the temperature is pleasant with a little shelter, being th...

10/11/2019

If you are interested in photometric or astrometric measurements with your equipment, you can get high precision in the timing of your data.

I have added a project that explains how to obtain timestamp with high precision (below the millisecond) in your measurements . I...

12/08/2019

Already Hipparchus of Nicea around 150 B.C. relied on the shadow of the Earth on the Moon during lunar eclipses to calculate the relative size of the Moon relative to the Earth, and deduced that it was 3.7 times smaller. The data is very similar to the one currently be...

04/08/2019

Today is August 4, 2019, and since July 25 the sun shows no sunspots or active regions on the visible surface towards the Earth. They are 11 consecutive days that can still be prolonged and that fit with a sun is in the period of reduced activity that occurs every 11 y...

16/07/2019

On July 16, 2019 there was a partial eclipse of the moon. The photo shows a moment of the eclipse, photographed from Majadahonda (Madrid) , which was not very lucid since the bias in itself made the phenomenon unquestionably unattractive, but in addition the moon was s...

20/08/2018

Building a stellar photometer clearly goes against the current trend. Almost all amateur photometrists use CCD cameras, and yet I have completed a complicated project to build a stellar photometer based on a photomultiplier. Why?. I could give two main reasons:

  • Usin...

01/08/2018

During the total eclipse of the moon on July 27, 2018, the Madrid Planetarium organized an observation in its esplanade with telescopes attended by members of the Madrid Astronomical Association and I had the pleasure of participating by contributing and operating one...

04/02/2018

The images that the AllSky camera captures are a great help to know the current state of the sky. Being the camera in color we can observe the state of the sky with the same clarity as when we look up and we get an idea of ​​whether it is worthwhile or not to put the t...

20/01/2018

During the months of November and December 2017, I dedicated the newly built Mini Observatory to the search for variable stars, finding 6 new variables that were approved and added to the VSX (The International Variable Star Index).

The equipment has proven to be a good...

09/12/2017

On the occasion of a work trip to Helsinki, Finland, I decided to take the Canon 60Da camera and the tripod to the suitcase. I did not have much hope of being able to use it because I was not going to have time to leave the hotel, nor did I have anything planned to pho...

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04/08/2019

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