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Northern lights in August
Iceland is an incredible destination to see nature. At the end of August, the conditions are excellent to enjoy the amazing landscapes of...
Admin
8 dic 20193 Min. de lectura
22 visualizaciones
0 comentarios


Get accurate timestamp in your measurements
If you are interested in photometric or astrometric measurements with your equipment, you can get high precision in the timing of your...
Admin
10 nov 20191 Min. de lectura
27 visualizaciones
0 comentarios


Calculating the size of the Moon with a photo
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...
Admin
12 ago 20193 Min. de lectura
237 visualizaciones
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Sun without spots
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...
Admin
4 ago 20191 Min. de lectura
18 visualizaciones
0 comentarios


Partial Moon Eclipse on Apollo 11 Anniversary
On July 16, 2019 there was a partial eclipse of the moon. The photo shows a moment of the eclipse, photographed from Majadahonda (Madrid)...
Admin
16 jul 20191 Min. de lectura
7 visualizaciones
0 comentarios


Why build a stellar photometer?
Building a stellar photometer clearly goes against the current trend. Almost all amateur photometrists use CCD cameras, and yet I have...
Admin
20 ago 20181 Min. de lectura
171 visualizaciones
0 comentarios


Total moon eclipse at the planetarium
During the total eclipse of the moon on July 27, 2018, the Madrid Planetarium organized an observation in its esplanade with telescopes...
Admin
1 ago 20182 Min. de lectura
16 visualizaciones
0 comentarios


Measurement of sky quality based on the analysis of the image of the AllSky camera
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...
Admin
4 feb 20181 Min. de lectura
91 visualizaciones
0 comentarios


Variable stars discovered with the Mini Observatory
During the months of November and December 2017, I dedicated the newly built Mini Observatory to the search for variable stars, finding 6...
Admin
20 ene 20182 Min. de lectura
16 visualizaciones
0 comentarios


Put the camera in the suitcase!, sometimes the stars are in your favor
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...
Admin
9 dic 20172 Min. de lectura
12 visualizaciones
0 comentarios


Design and assembly of a mini terrace observatory
I have completed the design and assembly of a mini terrace observatory. With this system I have a second operational telescope using an...
Admin
7 dic 20171 Min. de lectura
263 visualizaciones
0 comentarios


Solar eclipse on August 21, 2017 in the US
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...
Admin
20 sept 20176 Min. de lectura
24 visualizaciones
0 comentarios


Lunar Eclipse on August 7, 2017
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...
Admin
10 ago 20171 Min. de lectura
6 visualizaciones
0 comentarios


Testing the C11 to the limit in urban environment. Arp 104 / Keenan System.
A complicated objective of photographing with 11" telescope aperture and in urban environment is the intergalactic bridge between the...
Admin
26 jun 20162 Min. de lectura
36 visualizaciones
0 comentarios


Transit of Mercury
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...
Admin
14 may 20161 Min. de lectura
10 visualizaciones
0 comentarios


Giant sunspot
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...
Admin
24 abr 20161 Min. de lectura
6 visualizaciones
0 comentarios


Photo of supernova discovered on 1/19/2016
Supernova recently discovered in IC2207 with magnitude 17.5. The photo has been made with 14 stacked shots of 300s with LX200 8" and...
Admin
7 feb 20161 Min. de lectura
3 visualizaciones
0 comentarios
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