alberto91

Is it possible to leave everything scheduled so Sharpcap automatically changes the exposure time during the live stacking? (without having to change anything during the live stacking) I mean, for example, the first 2 images 30 seconds each, the next 6 images 10 seconds each, etc. If not, does any software allow it?

thank you!

Hello, Is it possible to change the ISO for the video in the nikon d3400? I know that the A7S for example can do it, but I can't find this option in my d3400. If it's not possible, at what ISO does the video mode of the d3400 use? Thank you.

Thanks!

I actually had one a year ago but returned it because it didn't work. I have read the iexos100 threads but I still have some doubts: 1. Is it possible to 'minimize' the explorestars app in android and open a different app without the mount stopping the tracking? 2. Does the explorestars app work in android 9.0 or 10.0? if not, in what android version does it work? 3. How far from the mount can I be for the wifi to work properly? and if there is a wall in between? 4. For astrophotography, is it good with the skywatcher 130 pds?

Thank you. I was suspecting it. I realized most people use it just as a guide camera. I actually have a Nikon d3400, but since the shutter has a life expectancy, it might not be the best for short-exposure live stacking.

Especially galaxies.. I had the 120 MM for exoplanet detection, but sold it. If someone could include an astrobin link to images of galaxies taken with the ZWO ASI 120 MC and a small non-apo telescope (under 130mm) I would appreaciate it.

Cool. A shame that the Takahashi Epsilon 180ED costs 5,000 dollars.

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Would the live stacking of eg 0.1 sec exposures during let's say 5 min give decent results or the amount of noise would spoil it? Anybody could post an image as example?

https://astronomy.com/news/2020/11/sun-like-star-identified-as-the-potential-source-of-the-wow-signal?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+astronomy%2ForOJ+(Astronomy.com+News+-+Presented+by+Astronomy+Magazine)

The Wow signal lasted just 72 seconds and was 'unusual' and has yet to be traced This led many to theorise the signal came from an intelligent alien civilisation Amateur astronomer Alberto Caballero has been searching the Gaia catalogue This catalogue contains details on 1.3 billion stars from around the universe He found a Sun like star in the region of space the signal is known to originate Source: https://www.dailymail.co.uk/sciencetech/article-8985997/Amateur-astronomer-traces-possible-source-notorious-WOW-signal.html Ps.: I'm the author of the paper, feel free to ask me anything

In this paper it is presented the concept and design of a new type of spacecraft that could be used to make the first manned interstellar travel. Solar one would integrate three near-term technologies, namely: compact nuclear fusion reactors, extremely large light sails, and high-energy laser arrays. A system of lenses or mirrors to propel the sail with sunlight is suggested as an alternative to laser propulsion. With a mile-long light sail, Solar One could reach an average of 22% the speed of light, arriving to the closest potentially habitable exoplanet in less than 19 years with the help of a Bussard scoop producing reverse electromagnetic propulsion. Key challenges are reducing the weight of continuous-wave lasers and compact fusion reactors as well as achieving cryo-sleep and artificial gravity. Source: https://commons.erau.edu/ijaaa/vol7/iss4/6/

The Big Ear Radio Telescope in Delaware, Ohio, was disassembled in 1998 having operated for over 30 years. It was replaced by a golf course. Big Ear was never the world’s biggest radio telescope, nor its most sensitive. But Big Ear nevertheless made one of the most famous observations in the history of astronomy, one that till this day has never been explained. Throughout the 1970s, Big Ear searched for signals from extraterrestrial civilizations. And on Aug. 15, 1977, it found one — a strong, intermittent signal lasting for 72 seconds, that stood out from the background noise like a searchlight. The team quickly ruled out a terrestrial origin or a broadcast from a satellite. Nevertheless, the signal was so powerful and unusual that Jerry Ehman, the astronomer who analyzed the data print out, annotated the signal with the word “Wow!”. The director of the observatory, John Kraus, later gave a detailed account of the observation: “The WoW” signal is highly suggestive of extraterrestrial intelligent origin, but little more can be said until it returns for further study,” he wrote, in a letter to the astronomer Carl Sagan. The Big Ear team continued to observe the same part of the sky, as have others, but the Wow! signal never returned. Nor has anything like it been observed in any other part of the sky. Kraus and others have even searched for stars that could be the source of the signal: “We checked star catalogs for any sun-like stars in the area and found none,” wrote Kraus. To this day, the Wow! signal remains unexplained and unrepeated. Which is why the discovery this week of a probable source is significant news. The finding is the result of some clever sleuthing by an amateur astronomer and the creation of a fabulous new 3D map of the galaxy. First, some background. Back in 2013, the European Space Agency launched the Gaia space observatory to map the night sky — to determine the position, the distance, and the motion of stars with unprecedented accuracy. So far, Gaia has mapped some 1.3 billion stars, allowing astronomers to begin creating the most detailed 3D map ever made of our galaxy. The mission is expected to continue until 2024. [...] Source: https://www.discovermagazine.com/the-sciences/sun-like-star-identified-as-the-potential-source-of-the-wow-signal

Updated project here: https://b60b9f63-669e-4fdb-bd27-a84d18308951.filesusr.com/ugd/53043e_0a3c07ef0ff343a5abee24d8b8a895ba.pdf

Hi everybody, My name is Alberto Caballero. I have been recently coordinating more than 30 observatories to look for exoplanets: https://exoplanetschannel.wixsite.com/home/project and we were able to find some new exoplanet candidates: https://www.universetoday.com/147231/saturn-sized-planet-found-in-the-habitable-zone-of-another-star-the-first-planet-completely-discovered-by-amateur-astronomers/ Now I have the intention to do the same, but looking for radio signals of possible extraterrestrial origin. The project I propose (which can be found here: shorturl.at/tM058) would be to conduct a search on specific stars. Basically, all the observatories would 'listen' to one a star at a time, 24/7 ideally. Of course, several observatories would be needed, so each one only observes a few hours per week. If anybody is willing to join us, please feel free to let me know here or through this contact form: https://exoplanetschannel.wixsite.com/home/contact This is the website of the proposed project: https://exoplanetschannel.wixsite.com/home/setiproject Looking forward to hearing from you, Kind regards, Alberto.

Hello, I recently wrote a paper (which I present here) suggesting which star has the highest probability of being the source of the WOW! Signal. Do you think that we should reply to the WOW! Signal or not?

Hello! Does anybody have a backyard small radio telescope able to track specific stars and a feedhorn able to cover 1420 Mhz? Cheers!

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Hello, For those interested, I'm doing a live streaming of Tau Ceti: Hope you like it

Hello, I wanted to share this interview of John Godier titled 'Is Interstellar Travel Possible?': https://youtu.be/UquRC-uMlqU What do you think? do you think it's achievable this century?

Hello! I was recently interviewed by the Interplanetary Podcast regarding Solar One, a crewed interstellar spacecraft that I propose. For those interested, this is the podcast: https://www.interplanetary.org.uk/post/197-solar-one-alberto-caballero Clear skies!

As some of you might know, I have designed a crewed interstellar spacecraft that I call Solar One. Basically, large flexible mirrors placed near the Sun would propel a one-mile light sail with a 4–crew spacecraft of 300 tons. To decelerate, an on-board compact fusion reactor would power a photon rocket placed at the front of the spacecraft that would 1) help decelerate and 2) ionize space hydrogen for the nuclear reactor. A Bussard scoop also placed at the front of the spacecraft would 1) collect those protons (ionized hydrogen) and 2) decelerate the spacecraft. Solar One would achieve an average of 22% the speed of light, which would allow the crew to reach the closest potentially habitable exoplanet in less than 19 years. Of course cryo-sleep and artificial gravity must be achieved first. Here is my paper in arXiv: https://arxiv.org/abs/2007.11474 And here a short movie of Solar One: https://youtu.be/JEf7Z_TLmgU Feedback is appreciated!

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Hi everybody, I would like to share with you a crewed interstellar spacecraft which I have designed and called Solar One. It employs a combination of 3 propulsion methods: nuclear fusion, beam-powered propulsion , and photon propulsion. Basically, several compact fusion reactors power a laser system that propels a huge light sail. Physicist Robert Forward already proposed in 1983 to use a 26-TW laser system to propel a 100-km light sail, a fresnel lens to focus the beam of the laser, and decelerate the spacecraft with a secondary light sail. I propose something a bit different, which is to use to use for example a 60 TW-laser to propel a 5-km light sail that would deploy from the spacecraft after the acceleration stage, use parabolic mirrors that gradually change their orientation in order to focus the laser beam, and finally use a photon rocket to decelerate the spacecraft. In theory, it could be possible to achieve 25% the speed of light, reaching the closest potentially habitable exoplanet in less than 20 years. There are of course many challenges, like building high-energy continuous-wave lasers, reducing the weight of the nuclear fusion reactors (and of course achieving effective nuclear fusion first), and minimizing the effects of zero gravity during such a long trip. What do you guys suggest to overcome these challenges? This is my paper and a short video that summarizes all.