astroavani

A Saturn that had not yet had time to process, I had to travel. Posting late but still worth it because the good nights here are diminishing with the approach of winter and the polar fleet starting to make itself present. https://www.astrobin.com/full/407458/0/?nc=user

An L filter is essential for a color camera! It blocks the IR and UV that detonate the quality in the regions of blue, green and red. Using a luminance filter is mandatory!

Loved it!

An interesting idea my friend Ruud!

Thanks for comments!

A very detailed photo of Jupiter with a close up on the GRS. Interesting to notice the clouds that are circling around you, but the most notable is to see how it flattened. According to John Rogers, as you all know, the GRS region is of special interest at present with the remarkable dark band that is streaming around it, and more retrograding rings approaching on the SEBs. Hi-res images of this region in both RGB and CH4, as often as possible, will be very valuable over the next few weeks. Clyde Foster and Shinji Mizumoto are particularly following these features, and they point out that an especially large retrograding ring is approaching the GRS. It should arrive about a week from now -- if it does not slow down or stop, as these large rings often do.

Thank you!

Photo showing the dynamics of the Jupiterian atmosphere quite accurately. It's only 17 days apart and big changes. Comparing Jupiter

Hello Tom! I've never used a mono camera, so I can not compare. I assumed that a mono camera for my specific seeing should not surpass one colored, I explain why: Hardly I get more than a 5 minutes of seeing stable, it alternates very quickly from good to bad in my region. So if I use a mono camera, I will hardly have a good capture on all 4 channels. Already a color camera allows me to make up to about 4/5 movies in the space that I would lose to make a single photo with a mono. In this situation, the possibility of catching a good moment in one of these 4/5 movies with the color, is much higher than getting the 4 good movies with a mono. In short, if I make about 20 to 30 colored films I have a good chance that at least one of them has an acceptable quality. If my seeing was more stable, the conversation would be different. Even so in the future I intend to get a camera color just to make those photos at the ends of the spectrum like IR, Methano, UV, etc.

High resolution link for Astrobin: https://www.astrobin.com/full/404151/0/?nc=astroavani&real=&mod=

Many details visible across the planet, interesting to note as the two white ovals above the Oval BA are keeping constant.

But unfortunately it did not have sufficient qualities to be selected in the Insight Investment Astronomy Photographer of the Year 2019.

Let there be another IODT that has lost the account anyway: https://www.astrobin.com/399358/C/#c331196

There was one mistake of mine! The date has been corrected in astrobin.

Exactly! I even think that was why she had not been selected.

Mars this year gave a real Show. . . That being so, I could not fail to register it. This composition, made with an approximate interval of 10 to 15 days between the photos, starts on July 31 when the planet reaches the largest apparent diameter (24.3 "arc) and ends on December 5 when it was with only 8,9 "of arc. Three things are very evident in such a work: first, the marked reduction of the diameter as the planet departs; secondly, the phase decrease as it approaches the quadrature and, finally, the marked reduction of the South Polar Calota, which, in the last photo, is reduced to a small point. . . Like Nike the Greek Goddess of Victory, the source of my inspiration, Mars has won my expectations, won my longings and brought me the feeling of having witnessed an unforgettable epic event. . . "The planetary arrangement was inspired by the shape of the wing of the Goddess Nike" PS: This was a composition I had saved unheard of for the Insight Investment Astronomy Photographer of the Year 2019. Although it was not selected, it deserves to be published! https://www.astrobin.com/full/399358/0/?nc=user

That is one of the few things I like to observe visually, LOL, I am exclusively a lunar and planetarium photographer. Here in the southern hemisphere we have some beautiful stars of carbon, among which I think is very beautiful is one that is next to Mimosa (beta crux) the contrast between white and blue Mimosa red star is an exceptional sight. https://www.flickr.com/photos/lrargerich/8465766540/ Here is a quick description: Beta Cru (b), Mimosa mag 1.2 is a brilliant blue white giant marking the end of the eastern limb of Crux. A crimson-red carbon star, EsB 365 mag 8.6 lies 2'.4 in pa 260 ° in the same field. Center beta in your field of view and the carbon star is easily located at approximately 9 0'clock as a bright red pinpoint star. If you have difficulty seeing this, look slightly away so your vision is averted as your peripheral vision is more sensitive to faint objects. In your telescope, 86 x magnification should distinguish it clearly. Nice photo, Reggie, I'll try to look at it at the first opportunity.

A doubt! Before April 1st, images are not accepted in the challenge? Only those that are made after that date? Best regards Avani Soares

Yes, we've been talking about this in another post! I do not know if they can understand me, I do not speak English and I depend on the translator, One very interesting thing is this Signal / Noise issue. According to Vlaiv, considering the Niquist theorem, he used the Fourier transform to determine the best point of image capture, in which case he arrived at F / 11. No problem at all! Very straightforward, since the Fourier transform is used in the manipulation of analogue / digital signals. I found the approach quite pertinent. On the other hand, he exemplified with an image of mine, in which he transposed to another image that would be the image in F / 11 so as to compare the capture of details. I do not know how he does it with JPEG image, everything he approached has his application share and he knows the limitations (even because he does not mention them). In theory, all that applies and would be the ideal of worlds. But the world is not ideal and one of the biggest variables that I see is precisely that of the lack of idealism. Translating, under controlled conditions, all mathematics will apply to Niquist's theorem and all. In practice, variation occurs. Because? Because the system is not ideal, it is stochastic, that is, it varies at every moment. This is the domain of stochastic calculation, much more complex and difficult in order to generate a mathematical model that comes closer to reality. That's what stochastic calculation tries to do. We can? Yes, but not in full. For example, use the Monte Carlo Method to get a template that applies to the conditions in which you capture your data. For this we would have to have a large mass of data and determine what data (variables) we would consider. The more variables, the more computation time is applied, which can take hours, days or months. So nobody does it amateurishly. You have to have access to supercomputers or computer clusters. Some variables: humidity, temperature, pressure, number of particles in the atmosphere, optical distortion of your equipment, electric flow in the CCD, data capture and drainage speed, data archiving form, processor TDP, processing capacity, etc. That's why math helps you not to waste time, but reality is far from it, it comes close, but it's not reality. All this is a simulation to represent reality and not reality. So what's this for? So you do not waste time on empiricism. In other words, the best catch of subtle details is, in your case, around F / 11. It may be F / 18, F / 22, but it will not be F / 60 or F / 80. How to know? As Dr. Strange's movie says: Study and Practice? The study tells you where you can be, but practice, where it really is. Its atmosphere does not leave, it is not mathematical, it approaches, but it is not ....

Thank you, friend Pete! It really is good to meet people who hide behind Nick sometimes. Of course this is not always advisable, but we can not deny that it creates greater intimacy.

It's a great telescope! I had two exactly alike and all two had very good optics, this makes us think that good optics is the rule, not the exception. I also really like the mechanics of GSO being the first to offer crayford focal point as standard on relatively inexpensive cost. Collimation is easy and will last for a long time if you consider other Newtonians I've had such as Sky Watcher and Orion UK. Anyway I have a certain passion for them and I can say that they are worth every cent invested, only, in my case you can not compete with a C14 still above the Edge line.

A cool video my friend Rafael Compassi made about the Parsec Observatory: https://youtu.be/TzUTI4_c-O4

This had been forgotten, now looking at the folders I realized that deserved to be posted. Oval BA suggesting in the left limbus well defined, enough details in NEB and SEB. This season Jupiter is extremely dynamic and making the astrophotographer's joy on call.