caballerodiez

So.. recent estimations for the Drake Equation (Maccone, 2012) suggest that there could be around 4,600 civilizations in our galaxy that are able to release detectable signals. I find this number a little bit excessive, so I plugged some of the values of our Solar System into the equation and I obtained a smaller yet more realistic result, in my opinion: 50 civilizations. Just in case someone is interested, I made a video showing the values I used: youtu.be/j2AIWIcn7Ig Do you think 50 is a more realistic number?

Hi! Guys do you think Tau Ceti e is inhabited? It was recently confirmed (https://twitter.com/i/web/status/1084742558041993216) and it is considered a potentially habitable exoplanet (http://phl.upr.edu/projects/habitable-exoplanets-catalog) I just made a video about it, just in case someone is interested: https://www.youtube.com/watch?v=Lhfu3DXoOCA&list=PL3RiFKfZj3pv1ZqpFxuZinoGtUGEOankw

Hi! Just in case someone is interested in SETI, I made a video about the most promising radio signals detected so far. Here it is: https://www.youtube....h?v=4MxNEfIfQjI Hope you enjoy it! What is the most promising SETI radio signal for you guys? Do you think we will discover an intelligent civilization with the SKA array? Cheers, Alberto.

Thank you !

Thanks a lot for your kind words! I really appreciate them Nop, I don't work

Hi guys, I detected my first exoplanet (hd 189733 b) and made a video about it showing step by step how I did it. I thought it could be useful for the people interested in the topic or already starting with transit photometry. The star has an apparent magnitude of 7.7 and the exoplanet produces a drop of 2.8% during almost 2 hours. I used a tele-photo lens (the Pentacon 135 mm f 2.8), a CMOS camera (ZWO ASI 120 MM) and an equatorial mount (Skywatcher EQ3-2) I also have a dual-axis motor drive, but a simple one that only controls the right ascension would be enough. I bought most of the items second-hand from Ebay and I spent around 300 euros. To set up the tele-photo lens and the camera I have a couple of guide rings and in order to focus the tele-photo lens, I have to separate it 33 mm from the camera by using for example 2 M42 extension rings, one of them 28 mm long and the other one 5 mm. Now, the steps to detect the exoplanet are the following: To find out when is the exoplanet going to transit the star with the Exoplanet Transit Database. With a program called SharpCap, take for example 5-second exposures with a gain of 1 for 3 hours. Once the transit has finished, with a program called ‘AstroImageJ’ open all the images, select the target star and for example a couple of reference stars, and perform multi-aperture photometry to detect the light curve. I think it is better explained with a video: https://www.youtube.com/watch?v=XHCppdWYs6w&list=PL3RiFKfZj3pv1ZqpFxuZinoGtUGEOankw

thanks for the video!

So.. we have sent radio messages to Gliese 273 b and the Gliese 581 system, where planet 'g' hasn't been confirmed yet but it is potentially habitable. Which of these exoplanets, if any, do you think might reply us back? Put in other words, which of these exoplanets do you think it might have intelligent life? I recently made a video about this topic, just in case someone wants to check it out: http://www.youtube.com/watch?v=egEcoNB5pZU&list=PL3RiFKfZj3pv9tm2gNUx313_nrZtX4W8M