astroavani

Here are some contributions to the challenge. This time I left the C14 aside and decided to use a C8 to make the competition fairer as I saw some comments. All photos close to the finisher. graciously

Great idea! Certainly the terminator is always the place of greatest interest because the long shadows there make it much easier to see fine details. However, at the same time, it is not an easy region to photograph, demanding from the photographer a great deal of control at the time of capture due to the high contrast that this region always has. The tendency is always to burst in some places like the crater walls facing the Sun. It will be interesting to follow, I hope I can leave my modest contributions. Hugs to everyone!

Thank you for choosing my humble work! It had many truly superb images, any one of them deserved to be at the top. I will try to continue doing my best to present interesting work to the community. Thank You! avani

THE IO VOLCANISM Four centuries after Galileo Galilei was amazed to discover four moons around Jupiter, space probes and powerful telescopes have allowed us to learn facts that would never have crossed the Italian astronomer's mind, such as the volcanic surface of Io or the subterranean oceans of Europa, Ganymede and Callisto hidden under icing. Two new missions from the European Space Agency (ESA) and NASA promise to uncover more surprises about Jupiter's moons in the next decade. Jupiter's nearest moon, Io, at a distance of about 422,000 kilometers, is the most active body in the solar system. The cause of this geological activity is the heat created by the gravitational pull it feels when it is between the planet and the other large moons - Europa and Ganymede. “Eruption plumes were observed by Voyager 1 , Galileo spacecraft and New Horizons . NASA's Galileo spacecraft also observed surface lava flows,” said Emma Marcucci, researcher and science communicator at the Space Telescope Science Institute (USA), in a conversation with OpenMind Io's permanent volcanic activity prevents the formation of craters and gives them striking colors. Ground-based telescopes have revealed that its atmosphere fluctuates when orbit puts it in the planet's shadow. This thin layer, composed mostly of carbon dioxide emitted by volcanoes, collapses when eclipsed by the gas giant, but is restored once more when the moon receives sunlight. Source: Laura Chaparro; SCIENCE SCIENTIFIC INSIGHTS

Concealment of Io - THE IO VOLCANISM Four centuries after Galileo Galilei was amazed to discover four moons around Jupiter, space probes and powerful telescopes have allowed us to learn facts that would never have crossed the Italian astronomer's mind, such as the volcanic surface of Io or the subterranean oceans of Europa, Ganymede and Callisto hidden under icing. Two new missions from the European Space Agency (ESA) and NASA promise to uncover more surprises about Jupiter's moons in the next decade. Jupiter's nearest moon, Io, at a distance of about 422,000 kilometers, is the most active body in the solar system. The cause of this geological activity is the heat created by the gravitational pull it feels when it is between the planet and the other large moons - Europa and Ganymede. “Eruption plumes were observed by Voyager 1 , Galileo spacecraft and New Horizons . NASA's Galileo spacecraft also observed surface lava flows,” said Emma Marcucci, researcher and science communicator at the Space Telescope Science Institute (USA), in a conversation with OpenMind Io's permanent volcanic activity prevents the formation of craters and gives them striking colors. Ground-based telescopes have revealed that its atmosphere fluctuates when orbit puts it in the planet's shadow. This thin layer, composed mostly of carbon dioxide emitted by volcanoes, collapses when eclipsed by the gas giant, but is restored once more when the moon receives sunlight. Source: Laura Chaparro; SCIENCE SCIENTIFIC INSIGHTS

Some will say there's a lot of noise, others that Ganymede is all artifact and I'll say I was happy. In the midst of clouds and extreme turbulence, I can't complain. The only thing I wanted was a good night of seeing! Purist processing without making separate Ganymede. All together at once so as not to be too much trouble. https://www.astrobin.com/sokkwh/

Some will say there's a lot of noise, others that Ganymede is all artifact and I'll say I was happy. In the midst of clouds and extreme turbulence, I can't complain. The only thing I wanted was a good night of seeing! Purist processing without making separate Ganymede. All together at once so as not to be too much trouble.

There were 50 videos of 60 sec with 60 sec intervals totaling 2 hours of effort. Without editing in Winjupos to make the image beautiful, variations from one film to another are inherent to seeing variations. Date: August 12, 2021 between 02:28 UT and 04:09 UT

There were 50 videos of 60 sec with 60 sec intervals totaling 2 hours of effort. Without editing in Winjupos to make the image beautiful, variations from one film to another are inherent to seeing variations. Date: August 12, 2021 between 02:28 UT and 04:09 UT

Transit of Europa, Concealment of Io I planned this session to try to make 3 hours of movies and thus create a Gif with the transit of Europa and Io's hiding. The idea was to catch the exit of Io and Ganymedes from behind the planet but at 04:10 UT the clouds came to spoil the work .Astrophotographer joy is never complete! https://www.astrobin.com/4t56xb/

Transit of Europa, ocultação de Io Planejei esta sessão para tentar fazer 3 horas de filmes e assim criar um Gif com o trânsito de Europa e o esconderijo de Io. A ideia era pegar a saída de Io e Ganimedes por trás do planeta, mas às 04:10 UT as nuvens vieram atrapalhar o trabalho . A alegria do astrofotógrafo nunca está completa! https://www.astrobin.com/4t56xb/

This winter I'm being punished, for the last 10 years I believe this year is the worst for astrophotography so far, very few open nights (during a clear day, the night always closes a dense fog), high jet stream and relative humidity always above 80%, less bad than the wind has been giving a truce. Thus, I am managing to obtain few images and of these, few have good quality. However, this image surprised me compared to others this season, and even a moon became visible, which was not processed separately. Also the C ring that I cherish so much stood out in both images! Saturn without Ring C doesn't look good to me Saturn.

Great capture!

First acceptable Saturn of the year. Unfortunately the Moon was very close which makes it lose some of the contrast even so we can easily see the bands on the planet and even the polar hexagon that looks good on the IR photo with its central dark eye.

According to Jupiter for the season, the result is still far from ideal, but with the weather conditions that are taking place this year in southern Brazil, there is no reason to complain.

Here's my collaboration! Transit from Ganymede 25 July 2021 Average night conditions due to fine mist. The idea was to make a Gif of the Ganymede transit with at least 1 hour of duration, but due to fog the light conditions varied a lot, which would prevent having a homogeneous Gif. Good thing Ganymede himself came out with good definition, note that especially in the image with the infrared filter the dark region of Edfu Facula at 2 am and the light region of Osiris at 6 am are perfectly distinguishable in the photo, which shows that they are not artifacts. PS: The high resolution image of Ganymede was taken from the Virtual Planet Atlas. https://cdn.astrobin.com/images/3740/2021/3bce2be4-50a9-4a53-afd2-48174c615315.png

Good record friend Reggie, I believe it was with Mak 180mm, you didn't exactly specify the setup, so it's bad to make a better assessment. The only thing I could suggest would be to check out the Registax color balance.

I saw your image Reggie, it was a little after mine!

Transit from Ganymede 25 July 2021 Average night conditions due to fine mist. The idea was to make a Gif of the Ganymede transit with at least 1 hour of duration, but due to fog the light conditions varied a lot, which would prevent having a homogeneous Gif. Good thing Ganymede himself came out with good definition, note that especially in the image with the infrared filter the dark region of Edfu Facula at 2 am and the light region of Osiris at 6 am are perfectly distinguishable in the photo, which shows that they are not artifacts. PS: The high resolution image of Ganymede was taken from the Virtual Planet Atlas. https://cdn.astrobin.com/images/3740/2021/3bce2be4-50a9-4a53-afd2-48174c615315.png

Thanks Reggie!

According to Jupiter for the season, the result is still far from ideal, but with the weather conditions that are taking place this year in southern Brazil, there is no reason to complain. https://cdn.astrobin.com/images/3740/2021/761ba9e9-b94a-496c-9d36-6ce5e43b15e8.png

Thanks for comments!

Reprocessing one of my best Saturns 4 years after capture. In that time some things change, new processing lines are developed and I believe I have been able to extract more details, the main reason was the use of the Astrosurface program, which with its most updated tools that Registax allows for a noticeable improvement.

Taking lunar photography is not just pointing the camera or telescope and shooting away. In lunar photography we also have to know how to choose the exact time to photograph what we want. See for example the attached photo! If it were taken when the sun was rising in the east (Langrenus and Petavius are on the eastern edge), it certainly wouldn't do so well. At that time, the Moon would have a very small illuminated region, which causes great contrast and makes it impossible to maintain homogeneous illumination. Another factor is that the Moon at this time is always very low, which makes the seeing generally poor. The right time to get this place (east limbo) is just after the full moon, when the sun starts to form big shadows in this region, the lighting is more uniform as well as at that time the moon is high in the sky. Likewise, if we were to photograph targets in the western limbo, the right time would be just before the full moon. Of course, we must know that each moment is unique, each angle of illumination changes the photographed landscape a lot, we can say that even in very similar conditions a photo of the same location will never come out exactly the same as the other, because the different libration movements will make this almost impossible. The next time you go to photograph the Moon remember, the Moon is like a beautiful maiden, there is always an angle where you will fit her best to get that great shot. Text: Avani Soares https://cdn.astrobin.com/images/3740/2021/be4a97d8-ff78-4a83-9380-7b5ee0b62f20.png