SolarChat!

Valery

Bravo, Stu!

Valery

Hi Stu,

Very nice! Much better than earlier attempts. I hope that from now you will keep the RC cannon fully armed and 100% ready to come to the game immediately as the seeing calms down.

Good luck and as much sunny weather as possible with tons of good seeing.

Valery

Valery

pupak wrote: ↑Tue Jun 13, 2023 8:46 am
I have a good offer for a Mewlon 210, but I have absolutely no idea where and especially for how much a matching DERF could be found.

First of all, buy the Mewlon 210!

The DERF we will find.

Valery

Valery

pupak wrote: ↑Mon Jun 12, 2023 10:48 am Superb pictures.

Yes! But I believe they will be even better in the case of imaging at somewhat longer wavelength. UV is too critical for average seeing we all living under and SCT are much better corrected at green-blue than at UV.

Valery

Valery

Bravo, Stu!

Valery

Valery

Bravo, Arne! Impressive animation. And perfectly processed.

Valery

Valery

Well done, Stu!

Valery

Valery

You are lucky, Mark! Really rare event.

Very well done. Must obtain a SPOD!

Thanks for sharing.

Vlaery

Valery

You are lucky, Mark! Really rare event.

Very well done. Must obtain a SPOD!

Thanks for sharing.

Vlaery

Valery

Excellent capture and processing. So much detail!

But the inverted image is, IMHO, just a host disk space wasting. Very much the same as to look at a pretty woman photo in an inverted mode.

Valery

Excellent capture and processing. So much detail!

But the inverted image is, IMHO, just a host disk space wasting. Very much the same as to look at a pretty woman photo in an inverted mode.

Valery

Rusted wrote: ↑Mon Apr 10, 2023 5:11 am At the risk of repetition: D-ERFs still pass some heat energy. Particularly with larger apertures.

Do not put your eye where you cannot hold your hand at focus!

Even if one can hold a hand, do not put your eyes there!

Valery

Hello Stu,

Very impressive TRUE pictures of the sun. Congratulates with a well deserved SPOD.

Valery

Valery

Excellent result, Christian!

Looking for more such images with fibrills.

It seems that for further progress with fibrills a sigbifucantly larger aperture required.

Valery

Valery

How good this objective works on bright planets and the moon? How good is it's color correction?

Valery

Valery

Too many gradients in your optical trains.

Valery

Situations are often solved here when I have an F6 telescope and an etalon with collimating lenses at F7, or F6/F0, F8/F10. Sometimes someone recommends setting the lens to the appropriate F. But I think it's pointless. After all, the aperture of a collimating lens cuts the light cone to its F, if ...

Valery

My Quark is several years old and it doesnt show problems yet, i always used a full aperture d-erf solution, so did the previous owner. I think its the cheaper and better solution because you can resell the front d-erf relatively easy once not needed anymore. Apart of that, reading some proposed so...

Valery

Well done, Alfred!

Valery

Valery

P.S I delete source images and videos immediately after processing. I shoot 1-2TB of data per day. I don't know where or why I would store them. One, two or three frames you selecting for further processing are not 1-2 TB in size. Not even 1-2Gb in size. You told that you stacked them and so, the r...

Valery

You exposed me, Valery. In the evenings, I amuse myself by painting my hair on the surface of the sun. :lol: You wrote: "I use only one or two, exceptionally the three best images that are minimally different." Can you, please, post these selected few frames (unprocessed) which were used ...

Valery

You have to realize that those fine details are actually hundreds of kilometers in size. Plasma streams must have structure. Plasma is not homogeneous after all. The sun is a living organism that is constantly changing. If you stack dozens of images, then those details will simply disappear when yo...

Valery

Hi Group, My concern is that these filters are ion assisted e beam . Which is really not that much different then e beam. Which come down to the coating. I don't think you can get a 1/4 wave on transmission with this coating method. So the filter will work for heat, but it will not be diffraction l...

Valery

My only motivation was to replace the crappy silicone pads that the etalons didn't work well with. I made new ones and the etalons became usable. I tried the cylindrical case just to make sure that the etalon is not actually tilting but pressure tuned. I believe that only one method should be used ...

Valery

From the beginning, we are talking about the principle of PST tuning, not about the secondary effects of a bad design of the etalon. Andy is correct. The original tuning method in PST is tilting the etalon. You just REDESIGNED the PST tuning system by changing the princip being inspired by Bob's in...

Valery

Extremely terrible news... We all will very much miss him!

RIP

Valery

Valery

Nice images, Frank!

BTW. What the equipment were used?

Valery

Valery

I'd assume the LS40 is nearly identical to the LS35 (see first post of this thread), and the LS40 etalon will be supported equally and uniformly around the perimeter of each etalon plate, and the etaon is seated on the same type of silicon foam rubber pad as the PST and other etalons. The ERF is an...

Valery

Really, your love to the Ca-II-K line helps you in such a miracle way!

Congratulate!

Valery

Valery

In my present PST I noticed that banding (due to tilt) is different. Sometime, when only a little amount of tilt required to get to the H-a core, almost full sun disk seen in Ha and more or less uniform. At higher barometric pressure and lower temp, the etalon require a severe tilt and as the result...

Valery

What is the model of SolSpectrum filter and its bandpass?

Valery

Valery

Hi Mark,

Do you now own a Solar Spectrum etalon? If yes, which one and how do you plan to use it?

Valery.

Valery

Although I haven't had a chance to test the etalon yet, I made an exact silicone pad. I wonder if the display quality will change. Petr, I hope you will succeed with this silicone pad. I believe it can has a commercial success. The next can be pressure tuned LS35, LS40, LS50 and LS60 etalons. Why n...

Valery

Pupak, Nothing wrong with the etalon itself. The picture you see on the solar disk is "banding". It just due to too much tilt required to come to the Ha CWL. This given etalon require too much tilt and you can see the results of such too much tilting - sponges are damaged. I have tested MA...

Valery

marktownley wrote: ↑Wed Jan 25, 2023 8:29 pm That is a very good price!

Really? LS35 and LS40 are much cheaper, I believe. I do use my LS35 to double stack my Quarks and it works just fine.

Valery.

Valery

Thanks, Maurits!

What is the price for this 30mm etalon?

Valery

Valery

Sergio, I have a Solar spectrum 0.7A and have double stack it with a 30mm SolarScope UK etalon from Beloptik Germany. It's a 2" cell with on both sides T2 thread. For more details see on my website under equipment. 2.jpg Hi Maurits, I was not able to find any info about this "double stack...

Valery

Very nice big series of images!

Thanks for sharing.

Valery

Valery

Marty,

Excellent results despite not a very friendly seeing. I especially love the images of the monster spot at high resolution in H-a.

But... the most impressive (for me!) are the images of the frost on the ground!

Never knew that this is easily possible in Florida!

Valery

Valery

Hi Stu,

So nicely done! Very impressive results with large cannon.

Thanks for sharing.

Valery.

Valery

Good WL session!

Thanks for sharing.

Valery

Valery

Peter,

What is it? "uʍop ɹǝpun"

Valery

Hi Marty,

Very very nice session. Winter(!) session.

Wish you more of such conditions and higher solar activity.

Valery

Valery

MAURITS wrote: ↑Sun Jan 08, 2023 11:48 am A wonderful session Clare & Peter.

Really! These images are so good and detailed, that no need to try to make them "better" doing inversion.
I hope (and I wish) that the seeing will be friendly to Clare & Peter as it was yesterday.

Valery

Valery

Very nice images, Robert!

Valery

Valery

Whoa!!! Best prominence sketch I have ever seen!

Thanks for sharing.

Valery

Valery

Super FD's, Alexandra!

Well done!

Maurits, super rainbow catch! Perfect timing! More impressive than majority of sun pictures!

Thanks to both!

Valery

Valery

Nice images, Stu!

Especially as for a winter time and lowest sun elevation.

What the setups were used?

Valery

Nice FD and very impressive flare/surge at the eastern limb!

Thanks!

Valery

Valery

Very nice images, John.

Special thanks for no inverted images! Your H-a images, even with a color camera and of a single frame, are so good that they do not require any "improvements" by their inverting.

Valery.

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