Search found 3592 matches

by Valery
Sat Feb 27, 2021 4:14 pm
Forum: This is SolarChat !!
Topic: AR2804 in High Res | Feb 26th 2021
Replies: 19
Views: 179

Re: AR2804 in High Res | Feb 26th 2021

There I had once so far 0.8 in one week and usually 1.2 to 1.4. I also take a video of the sun with the C8 to have a visual archive of the daily seeing. It seems that the jet-stream in my area is relatively kind, but I need much longer statistics for conclusions as you say. 1) Regarding ERFs, I hav...
by Valery
Thu Feb 25, 2021 9:45 pm
Forum: This is SolarChat !!
Topic: blocking filter chit chat chop chop - lets cut it out.
Replies: 41
Views: 694

Re: blocking filter chit chat chop chop - lets cut it out.

Using the aries d-erf is extremely awesome to everyone and I really do wish we all could have them, but its cost combined with a good rear mounted etalon like a solar spectrum and C11; Would you be willing to perform a test on the solar limb using just your Pst etalon? If your andover filters remov...
by Valery
Thu Feb 25, 2021 7:57 am
Forum: This is SolarChat !!
Topic: blocking filter chit chat chop chop - lets cut it out.
Replies: 41
Views: 694

Re: blocking filter chit chat chop chop - lets cut it out.

These two filters seem very far off band and suspect this to be reason for the negative experience using them. These filters were designed for F/5 cone and they stay on band in both my SW F/5 refractors. I will try them again with more transparent Quark. Hope they will work better in a such combina...
by Valery
Tue Feb 23, 2021 10:23 pm
Forum: This is SolarChat !!
Topic: blocking filter chit chat chop chop - lets cut it out.
Replies: 41
Views: 694

Re: blocking filter chit chat chop chop - lets cut it out.

Here the profiles of two Andover 12.5mm 0.1nm filters designed to work with F/5 telescopes (include both my SW F/5 100mm and 150mm.
by Valery
Tue Feb 23, 2021 6:23 am
Forum: This is SolarChat !!
Topic: blocking filter chit chat chop chop - lets cut it out.
Replies: 41
Views: 694

Re: blocking filter chit chat chop chop - lets cut it out.

Been there, done this - several years ago with exactly the same Andover, but with 12.5mm filters - of the same size as front BF in a standard Quark. Tried with Quarks. No gain at all, just makes a picture much dimmer and much less uniform than in original Quarks. These filters were constructed for F...
by Valery
Tue Jan 26, 2021 2:25 pm
Forum: This is SolarChat !!
Topic: 25Jan HA Sun from Singapore
Replies: 18
Views: 637

Re: 25Jan HA Sun from Singapore

Thanks, Valery. The Quark is still doing well. Its electronic components have a life duration and I hope it can last Cycle 25. Alfred I got one very nice 0.4A Quark wich is 5 year old now. It doing well and I keep it always with a dessictant in it's plastic barrel and use it only when the seeing is...
by Valery
Mon Jan 25, 2021 9:58 pm
Forum: This is SolarChat !!
Topic: 25Jan HA Sun from Singapore
Replies: 18
Views: 637

Re: 25Jan HA Sun from Singapore

Nice images, Alfred

Hope you will catch better seeing and make even better images.


Valery
by Valery
Mon Jan 25, 2021 9:45 pm
Forum: This is SolarChat !!
Topic: Monday Sun Jan 25th 2021
Replies: 25
Views: 1270

Re: Monday Sun Jan 25th 2021

Great high res images include CaK !

Valery
by Valery
Wed Dec 23, 2020 3:00 pm
Forum: This is SolarChat !!
Topic: Testing a Calcium corrector on a C11 (Image with Alluxa+Chroma filters added 29Dec)
Replies: 35
Views: 916

Re: Testing a Calcium corrector on a C11 and AR 2794 in CAK

To be strict, such a device can’t be a true corrector. True corrector is not a kind of a cheep Barlow lens with a build in some negative (to SCT) spherical aberration - too many factors out of control. As soon as I will back home after Covid 19, I will post images in CaK with a true ccorrector. Rega...
by Valery
Wed Dec 23, 2020 3:00 pm
Forum: SPoD Archive
Topic: Testing a Calcium corrector on a C11 (New image added 26Dec)
Replies: 24
Views: 231

Re: Testing a Calcium corrector on a C11 and AR 2794 in CAK

To be strict, such a device can’t be a true corrector. True corrector is not a kind of a cheep Barlow lens with a build in some negative (to SCT) spherical aberration - too many factors out of control. As soon as I will back home after Covid 19, I will post images in CaK with a true ccorrector. Rega...
by Valery
Wed Dec 23, 2020 8:09 am
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: Sony IMX253 mono cameras
Replies: 35
Views: 1112

Re: Sony IMX253 mono cameras

Hi Bob, Unfortunately, CMOS. Still far behind CCD. in terms of S/N. Since 2017 I was not able to find camera which was close to. PGR ICX445 mono CCD. 200 - 400 frames give much better S/N. Than 4000 frames Basler 1920-155. Use Basler. Due to high fps and more optimal sampling only. Look at Christian...
by Valery
Thu Dec 03, 2020 6:51 am
Forum: This is SolarChat !!
Topic: AR 2786 surrounded by waves (New images added on 6Dec)
Replies: 23
Views: 588

Re: AR 2786 surrounded by waves

Hi Alfred,

This image of the nice AR2786 is fantastic.


Valery
by Valery
Thu Dec 03, 2020 6:51 am
Forum: SPoD Archive
Topic: AR 2786 surrounded by waves
Replies: 6
Views: 169

Re: AR 2786 surrounded by waves

Hi Alfred,

This image of the nice AR2786 is fantastic.


Valery
by Valery
Mon Nov 30, 2020 6:51 am
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: Daystar Quark - Help in determining "on band" operation
Replies: 9
Views: 521

Re: Daystar Quark - Help in determining "on band" operation

Hi Valery, The scope is a Celestron 80ED, native f/D is 7.5 With the 4.2X telecentric barlow embedded in the Quark, the etalon should work at around f/D=31.5 The Quark I am using was pulled out of a Daystar Solar Scout SS60 As a side note and to make a comparison, I ran the calculation in reverse f...
by Valery
Sat Nov 28, 2020 9:53 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: Daystar Quark - Help in determining "on band" operation
Replies: 9
Views: 521

Re: Daystar Quark - Help in determining "on band" operation

Hello, As suggested by a number of members of the forum, today I invested 3.5 hours to test almost all the settings of the adjustment knob of my Daystar quark. All the images were obtained by stacking 25% of the best shots in a 1k frame .ser file; exposure 10 ms, focus unchanged, took a flat field ...
by Valery
Fri Nov 27, 2020 8:55 am
Forum: This is SolarChat !!
Topic: Nov. 26, 2020 AR 2786 and 2785
Replies: 15
Views: 352

Re: Nov. 26, 2020 AR 2786 and 2785

Excellent results, Phil!

Thanks for sharing them with us.


Valery
by Valery
Thu Nov 26, 2020 4:26 pm
Forum: This is SolarChat !!
Topic: Sunday Sunshine 22nd November
Replies: 13
Views: 307

Re: Sunday Sunshine 22nd November

Excellent session, Mark!

Wish you more of warm sunny days.


Valery
by Valery
Thu Nov 26, 2020 12:00 pm
Forum: This is SolarChat !!
Topic: AR2786-85 ( 24Nov) and AR2781 ( 11 Nov) Refractor H-Alpha 230mm
Replies: 27
Views: 769

Re: AR2786-85 ( 24Nov) and AR2781 ( 11 Nov) Refractor H-Alpha 230mm

Hi Jean,

You are the solar Monster! Absolutely fantastic images with such aperture and for a colder season.

Keep them coming.


Valery
by Valery
Thu Nov 26, 2020 12:00 pm
Forum: SPoD Archive
Topic: AR2786-85 ( 24Nov) and AR2781 ( 11 Nov) Refractor H-Alpha 230mm
Replies: 13
Views: 260

Re: AR2786-85 ( 24Nov) and AR2781 ( 11 Nov) Refractor H-Alpha 230mm

Hi Jean,

You are the solar Monster! Absolutely fantastic images with such aperture and for a colder season.

Keep them coming.


Valery
by Valery
Sun Nov 15, 2020 4:44 pm
Forum: This is SolarChat !!
Topic: Sun Ha November 14, 2020
Replies: 14
Views: 401

Re: Sun Ha November 14, 2020

Hi Jozef,


Very nice H-a images.

But Mars is the most impressive. Can you clarify me - did you make this Mars with a 6" LZOS apochromat?


Valery
by Valery
Wed Oct 28, 2020 5:53 pm
Forum: This is SolarChat !!
Topic: Sol from the 27th of October 2020.
Replies: 8
Views: 311

Re: Sol from the 27th of October 2020.

Hi Eric,

Very nice images collection! Glad to see you have a nice sunny autumn and a slowly awaking sun.


Valery
by Valery
Wed Oct 28, 2020 1:50 am
Forum: This is SolarChat !!
Topic: Oct. 27, 2020
Replies: 9
Views: 271

Re: Oct. 27, 2020

Nice session, Phil!

Blue wing looks ven more impressive than an Ha core.


Valery
by Valery
Wed Oct 28, 2020 1:50 am
Forum: SPoD Archive
Topic: Oct. 27, 2020
Replies: 9
Views: 242

Re: Oct. 27, 2020

Nice session, Phil!

Blue wing looks ven more impressive than an Ha core.


Valery
by Valery
Wed Oct 28, 2020 1:47 am
Forum: This is SolarChat !!
Topic: AR12778 Oct 27 H-Alpha & Prom
Replies: 11
Views: 309

Re: AR12778 Oct 27 H-Alpha & Prom

Super quick 5 min session...can't wait to see others' results...the speed of the session is reflected for sure! 152mm Aries DERF Quark -5 ASI174 as3 to imppg to gimp 11_36_33152mm Q-5 ASI1744ap2776 as3 to imppg to gimp.jpg 11_36_33152mm Q-5 ASI1744ap2776 as3 to imppg to gimp gold.jpg Very nice capt...