uranus7

Filming the area around AR12176 on September 30, I thought that the circle lied on the left side of the frame is probably a big dust "donut" on one of lens or maybe on the sensor. BUT IT ISN't, because you may observe that the "circle" is in fact part of the disk. The round shape of the plasma already rise a bit (darken appearance) is the specific sign of the Sun Cyclons. Look here: https://www.youtube.com/watch?v=n6wpPb74-SY&feature=youtu.be I also had the chance to film, in H-alpha spectrum, a more intense Solar Cyclon, on February 28, 2013. This is the film which I captured then: https://www.youtube.com/watch?v=qNjtm5teWEU Gabriel

Well Christian, then I will post a WL image with better details. I don't pretend I had the best transparency for my last WL posted picture but the seeing was ok. Regarding the image which you mentioned, those from the bottom of this thread, is taken at a greater FL, at a non-inspired moment regarding the transparency for that FL and also the contrasts are flat. The edge's intensity is also week, ruining the 3-D impression. The granules appear as being all flat. Believe me, I know to see an astro picture in WL and H-alpha. Hope I'll have some day the opportunity to have an excellent seeing and transparency and I'll show you what a good quality in WL means.There are at least 2 main characteristics very important at a WL and H-alpha image: the clarity for a deep resolution of details (as much tiny) and the 3-D aspect of shapes. Yes, the Photosphere and Chromosphere have 3-Dimensional aspects for their components and any imager must suggest it, for sure, by his own skills. Cheers,Gabriel[Ce message a été modifié par uranus7 (Édité le 04-10-2014).]

Christian,The second link with my previously personal record from 2013, it's about this one: https://www.youtube.com/watch? describe a Solar Cyclone which was already identified by specialists, as being a Solar Cyclone at that time.So, I have no prove that my record of September 30, 2014, isn't a very small Cyclon.Of course all is about electromagnetism and better saying magnetohydrodynamics but the name of Solar Cyclone is already dedicated for such kind of phenomenons. I guess you didn't thought that I imagined kind of winds on chromosphere... )"What you see is just the combination of low resolution and poor seeing conditions."Sorry but that day (Sept 30) the sky was clear enough and my resolution is 1900x1200 (or do you refer the scope resolution?), much enough to shot at a Focal Length greater than 10 meters and to obtain very good details. So, with all my efforts, I can't take in account your above assertion, then. Just look at the image obtained by me and posted here, for AR12176.It's too clear for taking in account a bad seeing. "In Halpha, features can show many shapes, and can occasionally look round or circular."Yes, the filaments are "handled" by strong electromagnetic fields, but all became suspicious when the "circle" is almost perfect and also is quasi-stationary as position related to the Sun.Then we can identify a so called Solar Cyclon there, without doubt. You may read here some about Solar Cyclones: http://adsabs.harvard.edu/abs/2012PASJ...64L...4M " AbstractAn innovative solar observing satellite, Hinode, has successfully observed the detailed evolution of an emerging magnetic field, starting from its appearance at the solar surface, to forming a developed bipolar region. The high spatial and temporal resolutions provided by the satellite has enabled us to capture prominent dynamic phenomena caused by the emerging magnetic field, such as a running wave in a chromospheric layer and the rotation of a magnetic polarity region on the Sun, which is reminiscent of a cyclone on Earth. A possible mechanism for producing the chromospheric running wave spreading from a solar cyclone has been demonstrated with a three-dimensional magnetohydrodynamic simulation for the emergence of a twisted flux tube. The simulation shows that as the emergence proceeds, an arc-shaped region with enhanced plasma density propagates outwards from the site of emergence. "Gabriel [Ce message a été modifié par uranus7 (Édité le 04-10-2014).]

Thanks, Polo. The Solar Cyclons are very rare, interesting phenomenons, also respecting quite the same laws as on the Earth. [Ce message a été modifié par uranus7 (Édité le 03-10-2014).]

Woww...sorry, YES, it's about 2" Baader continuum. Probably deserves to try a green filter or something else, too... I guess the very important secret (of course, except the processing skills) is to have a perfect collimation, when is used a reflector scope. I just made an almost professional collimation, recently.

A mild processing of the "insignificant" AR12176 in WL. [Ce message a été modifié par uranus7 (Édité le 02-10-2014).]

Thank you very much Alan. Regards from Romania ! Polo the used filter is the Baader Film Filter - ND3.8. It's the most permissive filter available for the moment and is pretty cheap. Cheers ! Gabriel

Hello Polo ! I used a C8, Baader ND3.8 Solar film, X5 Tele Vue Barlow and a mono Chameleon camera from Point Grey, with a NEQ6 mount.

Polo, the time when I shot was about 6 PM, so, the light was low and the only way to underline the details was to increase the contrast. Other way, the picture might look hazy and flat. Gabriel

A crazy close up for the main "microscopic" spots belonging to AR12175 of today. Shot between thin clouds, today, at 6 PM It's the visual story about how the granules looks : spatiality, different sizes and a bit clearer here. A large view is here: [Ce message a été modifié par uranus7 (Édité le 01-10-2014).][Ce message a été modifié par uranus7 (Édité le 01-10-2014).][Ce message a été modifié par uranus7 (Édité le 01-10-2014).]

Well for now, I got the secret of Marco "POLO" Thank you ! Gabriel [Ce message a été modifié par uranus7 (Édité le 01-10-2014).]

Thank you, Polo !I'll do an experiment right now, this way. Gabriel

Hello Polo,I just inserted the corresponding URL's to Astrobin, so you may see the pictures at original dimensions, there. Sorry...UUUUUhhhhhhhh !!!The site rules is issuing lots of troubles to me when it's about inserting pictures. Gabriel.[Ce message a été modifié par uranus7 (Édité le 01-10-2014).]

http://www.astrobin.com/full/122935/0/ [Ce message a été modifié par uranus7 (Édité le 28-09-2014).]

Merci beaucoup, Baroche ! [Ce message a été modifié par uranus7 (Édité le 28-09-2014).]

http://www.astrobin.com/full/123172/0/?real=&mod=

http://www.astrobin.com/full/122296/B/

Very nice pictures, Michelle! Gabriel

Merci beaucoup, jerome et Fred ! I'm really happy to know that I can bring some joy here ! Regards,Gabriel

There is NO COMPOSITION. Just how was captured and then was processed the whole image. [Ce message a été modifié par uranus7 (Édité le 12-07-2014).]

Excellent Moon between pictorial clouds ! Bravo! Gabriel

Thank you Baroche and thank you Polo ! Cette a ete un capture abandonee because of haze, mais mise an valeur by lot of patience... Cheers ! Gabriel[Ce message a été modifié par uranus7 (Édité le 12-07-2014).]

Hello, VL ! Ha ha... Well, I insisted a bit more with my processing, it's true. Ton critique is welcome anytime. J'aime the constructive critique when is realistique. The atmospheric conditions were bad enough... and I chose to insist for details despite (maigre) le noise (bruit?). (melange englaise-french...sorry) regards,Gabriel

Capture sous le brume. Captured through haze. [Ce message a été modifié par uranus7 (Édité le 10-07-2014).]

Thank you very much, Tosi Philippe !