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astroavani last won the day on January 14 2020

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About astroavani

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    Canoas, Brazil

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  1. Thank you colleague!
  2. Clavius is considered the third largest crater (Aitken at the South Pole, being the largest), in addition to being a very old crater, located close to the lunar South Pole. It measures approximately 225 km in diameter and 4.9 km in depth, originated about 4 billion years ago (Nectarian period), after a bolide impact. The name was given in honor of a wise Jesuit, mathematician and German astronomer highly regarded in his period, Christopher Clavius (1538-1612). A very relevant feature of Clavius is its appearance, the crater has a circular shape and its interior has some smaller craters that
  3. https://www.astrobin.com/full/6hazig/0/?nc=user Ptolemaeus is a circular crater approximately 153 km in diameter, located southwest of the visible lunar face, close to the craters in the image, Ammonius (upper corner near the center of Ptolemaeus), Alphonsus (to the right of Ptolemaeus), Arzachel (to the right of Alphonsus), Alpetragius (slightly below, between Alphonsus and Arzachel), Albategnius (upper right above Ptolemaeus), Klein (below Albategnius) and Herschel (to the left of Ptolemaeus). The crater received this nomenclature in honor of the Greek-Roman astronomer from Alexandria,
  4. https://www.astrobin.com/full/14nsgx/0/?nc=user The word "catena" is a Latin term defined by the International Astronomical Union to indicate a chain of small craters. A catena can have several origins, one of which is endogenous, it refers to volcanic activities along lines, where small eruptions occurred underground. As much as small catenas are still classified as collapse well chains related to volcanic activity, it is believed that most lunar catenas indicate the rebound points expelled by larger shocks. Some may indicate points where the Moon was hit by an object from space that bro
  5. Rima Ariadaeus is one of several systems of linear channels nestled in the highlands between Mare Vaporum and Mare Tranquillitatis. Some channels, such as Vallis Schroteri, (https://www2.lpod.org/wiki/August_6,_2013), were formed by volcanic eruptions. Other channels, such as Rima Ariadaeus, are believed to be failures that formed as a result of tectonic activity. Some scientists believe that the linear channels may have formed after major impact events, while others believe that they were formed as a surface manifestation of deep dyke systems when the moon was still volcanically active. Exper
  6. https://www.astrobin.com/full/qri2gw/0/?nc=user Janssen is located 140 km southwest of the Rheita Valley. Janssen's diameter is robust 190 km (Copernicus, the “Queen” of all craters, has a “mere” 95 km in diameter!). Janssen is a classic example of how new craters overlap the body of older craters and, at the same time, are smaller than the older craters that support them. Although Janssen is very old and its walls are in ruins, you should watch it carefully when the sun is low, it is like visiting the ruins of an old castle; it is still full of artifacts and reminders of a bygone era.
  7. https://www.astrobin.com/full/xz79ct/0/?nc=user Mare Humorum, or Sea of Moisture, is one of the smaller circular maria on the lunar nearside, about 825 kilometres across. The mountains surrounding it mark the edge of an old impact basin which has been flooded and filled by mare lavas. These lavas also extend past the basin rim in several places. In the upper right are several such flows which extend northwest into southern Oceanus Procellarum. Mare Humorum was not sampled by the Apollo program, so its precise age could not been determined yet. However, geologic mapping indicates that
  8. LOL. Last week a funny thing occurred to me! A girl called me for the first time asking for help in planetary astrophotography, after clarifying her doubts she told me the following: "Oh, you're a legend, some say you don't exist, and it's just a simulation of what would be a" planetary astrophotographer "that achieves results comparable to NASA's" I had to laugh a lot!
  9. Thank you for your concern. I hope to return to normal soon, things change a lot with an entire sick family. Thank God everyone is already recovered, only I was left behind because I was the last one to catch him, yet God is wise, first he gave me the strength to take care of everyone until my turn came. Hugs!
  10. https://www.astrobin.com/full/n6siza/0/?nc=user Talking to the moon On a starry night She appears quietly Your shine gets stronger Clearing my path The sky gets more beautiful With the reflection of your gaze And in the silence of the night She makes me walk As far as she is Will never fail to shine Your light doesn't go out And let life take me Whether new or full moon I will always be your admirer Your beauty fascinates me In reverence for the creator
  11. I've already managed to recover my old account! I apologize .
  12. Recently, NASA found evidence of fresh ice on Encélado, one of the moons on the planet Saturn, capable of harboring life. The ice rinks were captured by infrared images recorded by the Cassini spacecraft, and were announced in a NASA statement. Enceladus is one of the bets of scientists to shelter life. It is speculated that, some years ago, it was studied that there is an underground ocean beneath its thick icy crust, and that perhaps there are natural substances for the emergence of life. , the Enceladus looks quite uniform, with a shiny white icing, like a snowball sailing through space
  13. Some explanations about the photo captions: First of all, I put the date and time as stated in WinJUpos Then I place the CM, which are the meridians used to locate the positions on Jupiter, the most important is the CMIII which is the Magnetic meridian, as it never changes. So any scholar can accurately locate something on Jupiter and compare it to another photographer's photo anywhere in the world. Because Jupiter has a very dynamic atmosphere and new things are always coming up like Outbreak in the temperate zone above the GRS. Above the setup I made an estimate of the seeing and put
  14. Again the King of the Rings This has been a difficult season in the south of Brazil for photos of Jupiter and Saturn, the weather almost never collaborates, we are having a lot of rain and cloudiness and, when the turbulence clears, it has detonated everything. Even so, using improved techniques you can get some interesting photos amidst a lot of mediocre photos. Those two were fortunately one of them.
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