Search found 3113 matches

by Valery
Mon Feb 18, 2019 12:52 pm
Forum: This is SolarChat !!
Topic: High res images in 3bands Aug 21 and 25, 12" aperture.
Replies: 19
Views: 286

Re: High res images in 3bands Aug 21 and 25, 12" aperture.

Thanks VAlery I will try to use my Baader K-line filter for HR work Pedro, For HR work in the UV you need a well corrected telescope of a larger aperture. I think that 6" APO is barely acceptable for this task. The most cost effective telescope for HR works accross available spectrum is a cheap sec...
by Valery
Mon Feb 18, 2019 12:27 pm
Forum: This is SolarChat !!
Topic: High res images in 3bands Aug 21 and 25, 12" aperture.
Replies: 19
Views: 286

Re: High res images in 3bands Aug 21 and 25, 12" aperture.

robert wrote:
Mon Feb 18, 2019 11:06 am
Really good results, food for thought too!
Robert
Thanks, Robert. The thought is as simple as 2x2 - for high resolution you need a large aperture. :D
by Valery
Sun Feb 17, 2019 7:07 am
Forum: This is SolarChat !!
Topic: What's wrong???
Replies: 36
Views: 214

Re: What's wrong???

Maurits,

The best image train for you is: telescope -> Quark Chromosphere - NR Eiliminator - GSO 0,5x reducer - IMX174 camera.

GSO 0,5x reducer is cheap and small achromaic lens which must be threaded in the camera nose.

Hope this helps.


Valery
by Valery
Sat Feb 16, 2019 1:55 pm
Forum: This is SolarChat !!
Topic: What's wrong???
Replies: 36
Views: 214

Re: What's wrong???

The first time that I used a Quark Chromo. What is here wrong with this image( only stakket inAS2), no postprocessing. How can I solve this problem? test.jpg Combo is a wrong idea. Standard Quark has BEST telecentric system I ever have in hands. It near perfect. All best images with Quark I saw, we...
by Valery
Tue Feb 12, 2019 8:24 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: ERF and UV filter with 152mm f8 refractor and Quark
Replies: 7
Views: 440

Re: ERF and UV filter with 152mm f8 refractor and Quark

I am considering using it with my 152mm aperture APO with triplet air spaced lens. That scope is a f8 scope. Needless to say, I want to make sure I don't damage that expensive refractor. Hi Bob, I would advice you to buy ARIES 6" three bands ERF filter. It will solves all the problems with unwanted...
by Valery
Tue Feb 12, 2019 7:59 pm
Forum: This is SolarChat !!
Topic: Software Section On The Forum
Replies: 14
Views: 128

Re: Software Section On The Forum

Brendan wrote:
Tue Feb 12, 2019 7:43 pm
Sounds like a good idea Mark
+1
by Valery
Mon Feb 11, 2019 1:33 pm
Forum: This is SolarChat !!
Topic: The most remarkable spots of the Cycle 24 through a large aperture.
Replies: 8
Views: 111

Re: The most remarkable spots of the Cycle 24 through a large aperture.

Are you making me hungry Valery :lol: That is a beauty I agree :bow Alexandra Hi Alexandra, Yes, I do. You should feel a healthy normal hunger! It can drive your efforts in a new challenge in the solar imaging - truly high res imaging. We all here know well your nice achievements in the solar imagi...
by Valery
Mon Feb 11, 2019 1:33 pm
Forum: SPoD Archive
Topic: The most remarkable spots of the Cycle 24 through a large aperture.
Replies: 7
Views: 73

Re: The most remarkable spots of the Cycle 24 through a large aperture.

Are you making me hungry Valery :lol: That is a beauty I agree :bow Alexandra Hi Alexandra, Yes, I do. You should feel a healthy normal hunger! It can drive your efforts in a new challenge in the solar imaging - truly high res imaging. We all here know well your nice achievements in the solar imagi...
by Valery
Mon Feb 11, 2019 9:41 am
Forum: This is SolarChat !!
Topic: The most remarkable spots of the Cycle 24 through a large aperture.
Replies: 8
Views: 111

The most remarkable spots of the Cycle 24 through a large aperture.

Hi all, Here I will publish some remarkable spots of the Cycle 24 as seen through a large aperture. The first one is the AR12529 imaged April 12 2016 with my trusty second hand C11 equipped with full size 295mm ARIES DERF (first generation), PST etalon, BF10 blocking filter and IMX174 chip camera ZW...
by Valery
Mon Feb 11, 2019 9:41 am
Forum: SPoD Archive
Topic: The most remarkable spots of the Cycle 24 through a large aperture.
Replies: 7
Views: 73

The most remarkable spots of the Cycle 24 through a large aperture.

Hi all, Here I will publish some remarkable spots of the Cycle 24 as seen through a large aperture. The first one is the AR12529 imaged April 12 2016 with my trusty second hand C11 equipped with full size 295mm ARIES DERF (first generation), PST etalon, BF10 blocking filter and IMX174 chip camera ZW...
by Valery
Sun Feb 10, 2019 7:52 am
Forum: This is SolarChat !!
Topic: Small scale rapid changes in the solar chromosphere. 280mm scope.
Replies: 10
Views: 306

Re: Small scale rapid changes in the solar chromosphere. 280mm scope.

Carbon60 wrote:
Wed Feb 06, 2019 8:40 pm
Very nice images, Valery. The more you look the more you see...... lots going on.

Stu.
Thanks, Stu.

This year I will try image timelapse movies of the sun at high res. May be with 14" aperture.
But at least with 12".

Valery
by Valery
Thu Feb 07, 2019 7:19 pm
Forum: This is SolarChat !!
Topic: High res images in 3bands Aug 21 and 25, 12" aperture.
Replies: 19
Views: 286

Re: High res images in 3bands Aug 21 and 25, 12" aperture.

Great HR images, I love the resolution of the second image. Which filter was used? 393nm?, do you sell these filters This is just a 10nm 393nm filter by Edmund + filter #2 from PST CaK. Baader K-line filter will do the same. The key factors here not a filter. They are: 1. Optical quality (from DERF...
by Valery
Wed Feb 06, 2019 12:29 pm
Forum: This is SolarChat !!
Topic: High res images in 3bands Aug 21 and 25, 12" aperture.
Replies: 19
Views: 286

Re: High res images in 3bands Aug 21 and 25, 12" aperture.

marktownley wrote:
Wed Feb 06, 2019 10:10 am
There ever going to be any smaller ERFs you make commercially Valery? 4"? 6"?
140mm and 155mm were made. Two 155mm readily available for immediate purchase.

Valery
by Valery
Wed Feb 06, 2019 6:19 am
Forum: This is SolarChat !!
Topic: High res images in 3bands Aug 21 and 25, 12" aperture.
Replies: 19
Views: 286

Re: High res images in 3bands Aug 21 and 25, 12" aperture.

Thanks guys! I published these images (far not all my best) as the illustration of what can be achieved with alternatives to dedicated overpriced solar telescopes and filters. These results were achieved without travelling to high altitudes locations, so, in average location conditions at 1.5m above...
by Valery
Tue Feb 05, 2019 9:37 pm
Forum: This is SolarChat !!
Topic: High res images in 3bands Aug 21 and 25, 12" aperture.
Replies: 19
Views: 286

Re: High res images in 3bands Aug 21 and 25, 12" aperture.

marktownley wrote:
Tue Feb 05, 2019 7:43 pm
These are great Valery! The umbra in the first image look burnt out?
Yes, it was burn out by me with a "curves" tool in the PS CS6. ;)

Otherwise we will not see such a dynamic range for "surface" details.


Valery
by Valery
Tue Feb 05, 2019 5:43 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: What camera?
Replies: 23
Views: 811

Re: What camera?

Montana wrote:
Tue Feb 05, 2019 7:59 am
Valery, no idea

Alexandra
I would advice to choose a good PST etalon and BF10 filter.


Valery
by Valery
Tue Feb 05, 2019 4:15 pm
Forum: This is SolarChat !!
Topic: High res images in 3bands Aug 21 and 25, 12" aperture.
Replies: 19
Views: 286

High res images in 3bands Aug 21 and 25, 12" aperture.

Hi all, Here are four images I took last summer during tests of new 305mm (312mm outside diameter) DERF filters. Filters were tested in a front of my C14 telescope. First three images were taken in Ca K, in Ha and at 393nm continuum (10nm bandwidth). The fourth image was taken August 25 in Ha. Thank...
by Valery
Tue Feb 05, 2019 1:07 pm
Forum: This is SolarChat !!
Topic: Small scale rapid changes in the solar chromosphere. 280mm scope.
Replies: 10
Views: 306

Re: Small scale rapid changes in the solar chromosphere. 280mm scope.

Valery, Very detailed images and excellent processing makes it easy to see the differences two minutes can make. A visual merge of the images show very little has remained stationary. This illustrates why video captures should be kept short at this scale. Thanks, Phil At a good seeing I usually use...
by Valery
Mon Feb 04, 2019 8:25 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: What camera?
Replies: 23
Views: 811

Re: What camera?

Alexandra, what the H-a filter do you plan to use with the C11 scope?

Valery
by Valery
Sun Feb 03, 2019 4:54 pm
Forum: This is SolarChat !!
Topic: New Year, New Setup & the Blocking Filter Experiment - 3rd February
Replies: 22
Views: 445

Re: New Year, New Setup & the Blocking Filter Experiment - 3rd February

Congrats, Mark! I dodn't understand how SM90 front mount etalon can't work in a DS with this scope. About BF's selection. I already did this and I beleiev my BF10 now is very bright. It works fantastic with my PST etalon. Even in a telecentric mode (with some bandwidth widening) at F/43-45 the view ...
by Valery
Sun Feb 03, 2019 1:35 pm
Forum: This is SolarChat !!
Topic: Small scale rapid changes in the solar chromosphere. 280mm scope.
Replies: 10
Views: 306

Re: Small scale rapid changes in the solar chromosphere. 280mm scope.

Yup, quite a bit going on. Would make for an interesting animation at this scale. Sadly such seeing is beyond me... The daytime seeing is quite different from the night seeing. Before I dived in to high res solar H-a imaging, I too was absolutely sure I will never catch such a seeing. Now I know wh...
by Valery
Sun Feb 03, 2019 10:38 am
Forum: This is SolarChat !!
Topic: Small scale rapid changes in the solar chromosphere. 280mm scope.
Replies: 10
Views: 306

Small scale rapid changes in the solar chromosphere. 280mm scope.

Hi all, During all these boring solar minimum days we all looking for changes on the sun face, we awating new spots, new ARs. But the sun ramains the same - almost featurless in small H-a telescopes. Not say about white light telescopes where the sun's face just blank. But let take a look at the sun...
by Valery
Wed Jan 30, 2019 6:57 am
Forum: This is SolarChat !!
Topic: AR2733-Jan 29 and 28 2019
Replies: 10
Views: 217

Re: AR2733-Jan 29 and 28 2019

The first image is at the extreme edge of 6" aperture resolution!

Thanks,


Valery
by Valery
Wed Jan 30, 2019 6:48 am
Forum: SPoD Archive
Topic: AR2733 Rounding the Limb at 150mm HA & UV-A | Jan 29th 2019
Replies: 9
Views: 151

Re: AR2733 Rounding the Limb at 150mm HA & UV-A | Jan 29th 2019

I am quite impressed with the progress Marty developed last several months. And it is obvious than now his limiting factor is the resolution. And I hope that in a near future even his new 8" aperture will start to limit him. With Florida seeing he, as I am sure, can rise the bar on a new height in a...
by Valery
Wed Jan 30, 2019 6:48 am
Forum: This is SolarChat !!
Topic: AR2733 Rounding the Limb at 150mm HA & UV-A | Jan 29th 2019
Replies: 9
Views: 255

Re: AR2733 Rounding the Limb at 150mm HA & UV-A | Jan 29th 2019

I am quite impressed with the progress Marty developed last several months. And it is obvious than now his limiting factor is the resolution. And I hope that in a near future even his new 8" aperture will start to limit him. With Florida seeing he, as I am sure, can rise the bar on a new height in a...