Search found 3156 matches

by Valery
Thu Mar 21, 2019 2:42 pm
Forum: This is SolarChat !!
Topic: AR12735 through a 6" refractor and QUARK Chromosphere. REPROCESSED image!
Replies: 13
Views: 181

Re: AR12735 through a 6" refractor and QUARK Chromosphere. REPROCESSED image!

yltansg wrote:
Thu Mar 21, 2019 1:20 pm
Hi Valery,

Why are you limiting your C14 to 12" aperture?

Alfred
Hi Alfred,

The reason is simple: available filter is 12" in diameter.


Valery
by Valery
Thu Mar 21, 2019 11:32 am
Forum: This is SolarChat !!
Topic: AR12735 through a 6" refractor and QUARK Chromosphere. REPROCESSED image!
Replies: 13
Views: 181

Re: AR12735 through a 6" refractor and QUARK Chromosphere. REPROCESSED image!

And here we all were thinking you had bad seeing :lol: C'mon, get the 14" up and running then :o To be honest, the earliest spring time when I can meed excellent seeing with larger apertures is the end of the first decade of April, not right now. The C14 will be limited to 12" aperture. Valery
by Valery
Wed Mar 20, 2019 7:05 pm
Forum: This is SolarChat !!
Topic: AR12735 through a 6" refractor and QUARK Chromosphere. REPROCESSED image!
Replies: 13
Views: 181

Re: AR12735 through a 6" refractor and QUARK Chromosphere.

marktownley wrote:
Tue Mar 19, 2019 3:48 pm
Is your seeing not as good as you would like if you're only using the 6" scope?
The reason is that my personal 11" filter has been sold. I am waiting for finishing of my next sample (3-rd generation) of the 11" DERF.
May be I will start to use my C14 scope. We will see.


Valery
by Valery
Tue Mar 19, 2019 2:05 pm
Forum: This is SolarChat !!
Topic: AR12735 through a 6" refractor and QUARK Chromosphere. REPROCESSED image!
Replies: 13
Views: 181

AR12735 through a 6" refractor and QUARK Chromosphere. REPROCESSED image!

Hi all, A newly born AR12735 as it was seen yesterday March 18. SkyWatcher 150mm F/5 telescope + TV 2x Powermate + Quark Chromosphere yields final F/43 at the etalon. Quark's CWL Ha was at -3clicks (counterclockwise). 0,7x reducer and Basler ASA1920-155 camera. 150fps. 3000frames recorded 2500frames...
by Valery
Tue Mar 19, 2019 1:46 pm
Forum: This is SolarChat !!
Topic: Solar images restoration.
Replies: 5
Views: 145

Re: Solar images restoration.

Very interesting indeed although I don't think we will be able to apply it at home? Interesting to note I need to have a maximum of 10ms for exposure times and collect data within 5 seconds, that is a helpful tip :) Alexandra Take it easier, Alexandra! All is not so bad. I usually use a recording c...
by Valery
Sun Mar 17, 2019 4:29 pm
Forum: This is SolarChat !!
Topic: Sunday Sun 17th March '19
Replies: 11
Views: 141

Re: Sunday Sun 17th March '19

Hi Stu,

Very nice CaK images with 125mm scope! You can easily rise the scale up at 2x and images will be only better! Now they are really undersampled.

Valery
by Valery
Sun Mar 17, 2019 4:21 pm
Forum: This is SolarChat !!
Topic: Sunday Sunshine - 17th March
Replies: 13
Views: 166

Re: Sunday Sunshine - 17th March

Excellent images, Mark!

Your SM90II telescope looks like a keeper. And works even better with your Quark.

And CaK easily can be even better at about 1.5x larger scale!

Hope a good seeing came back.

Valery
by Valery
Sat Mar 16, 2019 2:36 pm
Forum: This is SolarChat !!
Topic: Solar images restoration.
Replies: 5
Views: 145

Solar images restoration.

Interesting reading for us. All is interesting, about image restoration on the page 119 and 131. https://books.google.com.ua/books?id=SDPxGZ1yPxsC&pg=PA120&lpg=PA120&dq=high+resolution+solar+Ha+images&source=bl&ots=8cP4JsNNDW&sig=ACfU3U0mnGb37IZZBSM64JPHKQ378N93_g&hl=ru&sa=X&ved=2ahUKEwiht4zt7obhAhX...
by Valery
Fri Mar 15, 2019 5:07 am
Forum: Solar Software
Topic: GAMMA SETTINGS QUESTION
Replies: 15
Views: 481

Re: GAMMA SETTINGS QUESTION

I will give the logarithmic histogram a go thanks Bruce. When I recording the sun, I use an 8bits mode and then camera and FC convert it and writes in a 16bit ser files. So, even if I stretch the histogram to about 90%, at the final 16bit file I have enough spare bits to process an image with no cu...
by Valery
Fri Mar 15, 2019 5:00 am
Forum: This is SolarChat !!
Topic: March 10, 2019 surface and proms
Replies: 12
Views: 248

Re: March 10, 2019 surface and proms

Phil,

Excellent images! All of them. Thanks for sharing them with this chat.


Valery
by Valery
Thu Mar 14, 2019 10:28 am
Forum: This is SolarChat !!
Topic: Sol from the 13th of March 2019.
Replies: 9
Views: 163

Re: Sol from the 13th of March 2019.

Thanks, Eric, for your nice series of images.
by Valery
Tue Mar 12, 2019 9:41 pm
Forum: Solar Software
Topic: GAMMA SETTINGS QUESTION
Replies: 15
Views: 481

Re: GAMMA SETTINGS QUESTION

marktownley wrote:
Tue Mar 12, 2019 4:45 pm
Any tips for limb shots Valery?
No special tips. I just set brightness, exposure and gamma so, that I see maximum details here include spiculaes. If needed I use 16bit recording mode. Then several "curves" tweaking again, for maximum details and shades visibility.
by Valery
Tue Mar 12, 2019 8:38 am
Forum: This is SolarChat !!
Topic: AR12734 March 6 2019. SW 150mm scope + Quark.
Replies: 6
Views: 149

Re: AR12734 March 6 2019. SW 150mm scope + Quark.

Montana wrote:
Tue Mar 12, 2019 8:32 am
Lovely to see these tiny regions in such detail :bow :hamster:

Why did you stack all 4000 frames?

Alexandra
I've stacked different number of frames and this stack came out very good too. So, I processed it.


Valery
by Valery
Sat Mar 09, 2019 8:47 pm
Forum: This is SolarChat !!
Topic: Citizen Science Update
Replies: 22
Views: 595

Re: Citizen Science Update

Another science potential may be imaging of white light flares, and the temporal evolution of pores. Given the rare occurrence, and/or unpredictable location on the sun, and lifetime (hours to a day or so in case of many pores) these are objects hard to image for the pros. A flexible and worldwide ...
by Valery
Sat Mar 09, 2019 4:36 pm
Forum: This is SolarChat !!
Topic: Today's SUN (20190309) | back to the LUNT152
Replies: 11
Views: 211

Re: Today's SUN (20190309) | back to the LUNT152

I like this set of images. Very well done.


Valery
by Valery
Sat Mar 09, 2019 11:14 am
Forum: Solar Software
Topic: GAMMA SETTINGS QUESTION
Replies: 15
Views: 481

GAMMA SETTINGS QUESTION

Mark T. writes: "I have been doing some experimentation with my PGR cameras lately, and are able to image in their native 10, 12 or 14bit output (depends on camera), i'm finding I can expose way up to >90% of the histogram with no issues in post processing or stacking. If I do this in 8 bit mode I f...
by Valery
Sat Mar 09, 2019 10:19 am
Forum: This is SolarChat !!
Topic: AR12734 March 6 2019. SW 150mm scope + Quark.
Replies: 6
Views: 149

Re: AR12734 March 6 2019. SW 150mm scope + Quark.

marktownley wrote:
Sat Mar 09, 2019 6:10 am
These are nice images Valery!
Thanks, Mark.


Valery.
by Valery
Sat Mar 09, 2019 2:49 am
Forum: This is SolarChat !!
Topic: AR12734 March 6 2019. SW 150mm scope + Quark.
Replies: 6
Views: 149

AR12734 March 6 2019. SW 150mm scope + Quark.

Hi all, Here are two active acreas at the sun as seen March 6 2019 with SkyWatcher 150mm F/5 refractor, ARIES 150mm DERF, TV 2x Powermate, standard Quark Chromosphere, 0,7x reducer and Basler ASA1920-155 camera IMX174 chip. F/43 at the etalon. Seeing was just average and good transparency at +14C. 4...
by Valery
Sat Mar 09, 2019 2:00 am
Forum: This is SolarChat !!
Topic: Sunspot in AR2734 Continues | + FD, Proms, Plages | March 7th 2019
Replies: 17
Views: 271

Re: Sunspot in AR2734 Continues | + FD, Proms, Plages | March 7th 2019

My understanding of gamma in Firecapture is that it is simply software manipulation, so it's not doing anything that I cannot do in post-processing, correct? Incorrect. You can see this easily - compare the view of the screen when you playback already recorded movies of the same area (for example A...
by Valery
Fri Mar 08, 2019 1:58 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: Lunt Calcium filter
Replies: 7
Views: 245

Re: Lunt Calcium filter

George and all, Do not remove Lunt pre-filter unless your image is too dark. As for camera use for CaK imaging. To realize full resolution at 393nm with IMX174 chip one need to get F/40. With IMX290 one need to get F/20-25. I bought 290MM camera for CaK imaging - it has better sensitivity, lower noi...
by Valery
Fri Mar 08, 2019 6:36 am
Forum: This is SolarChat !!
Topic: Sunspot in AR2734 Continues | + FD, Proms, Plages | March 7th 2019
Replies: 17
Views: 271

Re: Sunspot in AR2734 Continues | + FD, Proms, Plages | March 7th 2019

Yes, I set gamma to 100 and increased exposure values for the purpose of focus and for the screen shot. Otherwise, I shoot gamma neutral and require no gain. Sad! This is a very common mistake - to set gamma at a neutral value. One always will loose delicate shades in the final images. Gamma should...
by Valery
Thu Mar 07, 2019 8:15 am
Forum: This is SolarChat !!
Topic: Sol from the 6th of March 2019.
Replies: 10
Views: 157

Re: Sol from the 6th of March 2019.

Excellent series of images, Eric!

Always nice to see your works.


Valery
by Valery
Mon Mar 04, 2019 7:56 pm
Forum: This is SolarChat !!
Topic: Life of the quiet sun - an ultra small beautiful arc prominence through a 280mm telescope.
Replies: 7
Views: 231

Life of the quiet sun - an ultra small beautiful arc prominence through a 280mm telescope.

The sun is quiet now. But at a small scale it still alive and very busy . One just need a bigger scope to look and to study sun life at a low scale. Numerous changes are very fast - within minutes and even tens of seconds! Just look at this absolute beauty - an ultra small arc-like prominence (just ...
by Valery
Wed Feb 27, 2019 1:32 pm
Forum: This is SolarChat !!
Topic: Lifting filament 24 Febraury
Replies: 10
Views: 258

Re: Lifting filament 24 Febraury

Welcome back, Dave!

Excellent photos. Thanks for sharing them with us.


Valery