Majadahonda Astronomical Observatory

The conjunction of Venus and Mercury took place this month of May 2020 at 9:44 local time, Venus passing through the north of Mercury at only 0.53º. The orie...

Every year Venus passes close to the Pleiades cluster (M45), but only every 8 years a perfect conjunction is produced, crossing the cluster. The previous con...

Venus is in an optimal position for observation when it is at its maximum elongation, i.e. when the angle between the Sun and Venus as seen from the Earth ac...

Currently, the transits of Mercury take place in May (near its passage through the descending node) or in November (near its passage through the ascending no...

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 dis...

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 p...

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 re...

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...

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 ver...

Building a stellar photometer clearly goes against the current trend. Almost all amateur photometrists use CCD cameras, and yet I have completed a complicate...

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 o...

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 s...

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 w...

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 bein...

I have completed the design and assembly of a mini terrace observatory. With this system I have a second operational telescope using an old 8" SC tube disass...

The eclipse of August 21, 2017 was more than an astronomical event. In South Carolina there was no store without a sign referring to the event and it was the...

From Cádiz I have been able to observe and make some photographs of the partial lunar eclipse on August 7, 2017. From this latitude, the moon's departure was...

A complicated objective of photographing with 11" telescope aperture and in urban environment is the intergalactic bridge between the galaxies NGC 5216 and N...

On 9/5/2016 the weather in Majadahonda gave prediction that it would not be possible to see the transit of Mercury. And so it was until the late afternoon, t...

The sunspot called AR 2529 came into view on April 7, 2016. The photograph shows his status on April 9. Sunspots are regions of very high magnetic activity. ...