Search found 3185 matches

by Valery
Fri Apr 19, 2019 3:09 am
Forum: This is SolarChat !!
Topic: Just on time.
Replies: 10
Views: 67

Re: Just on time.

Congrats, Maurits! Very well done!

I think you can make less reduction when you meet such a seeing. 0,6 or 0,65x reduction will allows better resolution and more 3-D.


Valery
by Valery
Thu Apr 18, 2019 5:33 pm
Forum: This is SolarChat !!
Topic: Today's SUN (20190418) | AR12738
Replies: 8
Views: 71

Re: Today's SUN (20190418) | AR12738

As always, with a full line of images for any taste!

Thanks, Pedro.


Valery
by Valery
Thu Apr 18, 2019 5:26 pm
Forum: This is SolarChat !!
Topic: AR2738 in Ca K with TOA 150 and nice details
Replies: 12
Views: 126

Re: AR2738 in Ca K with TOA 150 and nice details

So successful weekend, Christian!


Valery
by Valery
Wed Apr 17, 2019 8:14 am
Forum: Solar Scope Modifications
Topic: Getting better...Sunspot with 152mm PST Stage 1
Replies: 4
Views: 127

Re: Getting better...Sunspot with 152mm PST Stage 1

Jack,

My advice to use about 67% of the present scale. You will not loose the reasolution, but will win in Signal/Noise and can use shorter exposures, will gain in the FOV size. And, of course, no coloration till your post processing is finished.


Valery
by Valery
Wed Apr 17, 2019 8:01 am
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: Why my Quark always refused to work...
Replies: 7
Views: 131

Re: Why my Quark always refused to work...

marktownley wrote:
Tue Apr 16, 2019 4:51 pm
You can find the replacements here https://www.andovercorp.com/products/ba ... 600-699nm/

Part No. 656FS02-12.5

I replaced mine with the 25mm version...

Hi Mark,

What was the reason you have replaced it in your Quark?


Valery
by Valery
Tue Apr 16, 2019 8:04 pm
Forum: This is SolarChat !!
Topic: Holiday sunshine
Replies: 11
Views: 90

Re: Holiday sunshine

Excellent set of different pictures! Thanks for the story.


Valery
by Valery
Mon Apr 15, 2019 11:08 pm
Forum: This is SolarChat !!
Topic: Sunday, April 14: CaK and H alpha of "The Spot"
Replies: 9
Views: 87

Re: Sunday, April 14: CaK and H alpha of "The Spot"

Hi Peter,

Congrats with the season successful opening. I especially like the CaK image. It seems you have enough space to rise the scale in the CaK imaging. I found that F/40-45 is about right for CaK imaging with IMX174 sensor.


Valery
by Valery
Mon Apr 15, 2019 1:24 am
Forum: This is SolarChat !!
Topic: AR12738 at High Res through 150mm refractor and QUARK Chromosphere.
Replies: 11
Views: 208

Re: AR12738 at High Res through 150mm refractor and QUARK Chromosphere.

Nice one, Valery. Lots of fine detail. How many Quarks did you get through before you got a good one? Stu. It's uniformity is far from perfect. Visually the non-uniformity is relatively easily seen, especially when moving accross the sun disk. It is very narrow, but not really uniform, Valery
by Valery
Sat Apr 13, 2019 12:55 am
Forum: This is SolarChat !!
Topic: AR12738 at High Res through 150mm refractor and QUARK Chromosphere.
Replies: 11
Views: 208

Re: AR12738 at High Res through 150mm refractor and QUARK Chromosphere.

yltansg wrote:
Fri Apr 12, 2019 5:47 am
Do you use a 2" 2X TV barlow immediately at the output of the telescope followed by the Quark Chromosphere? Any other adapter/spacers required in between?
Yes, correct. And no optics in between.


Valery
by Valery
Fri Apr 12, 2019 1:30 am
Forum: This is SolarChat !!
Topic: AR12738 at High Res through 150mm refractor and QUARK Chromosphere.
Replies: 11
Views: 208

AR12738 at High Res through 150mm refractor and QUARK Chromosphere.

Hi all, April 11 morning was reither cloudy and foggy. However in two hours the sky cleared. The seeing was average but with some improvements.So, I took my computer and Quark and quickly set up the telescope. Here is the best shot of the AR12738 I was able to take. The telescope is SkyWatcher 150/7...
by Valery
Thu Apr 11, 2019 4:14 am
Forum: This is SolarChat !!
Topic: Omega filters working at last
Replies: 7
Views: 99

Re: Omega filters working at last

The telescope is very good and the filters are bad. I got Omega H-a which is even worser then your's.
Bob Jonson, the Omega owner, is a typical scammer - he promised replacement or money back, but never responded.


Valery
by Valery
Wed Apr 10, 2019 4:36 am
Forum: This is SolarChat !!
Topic: Saturday Sun 6th April
Replies: 15
Views: 230

Re: Saturday Sun 6th April

I can understand why starting off large works when the seeing is better more often than it is worse. Unfortnately, this conclusion/understanding is wrong. My seeing is mainly poor to barely acceptable. The real reasons I always starting with the largest aperture are: 1. best seeing is always betwee...
by Valery
Mon Apr 08, 2019 12:54 am
Forum: This is SolarChat !!
Topic: Saturday Sun 6th April
Replies: 15
Views: 230

Re: Saturday Sun 6th April

My usual method is that if an aperture is sustained at Ha then I try that aperture in CaK, if it is still working in CaK then I up the aperture in Ha. Ad infinitum... At my location I know well: the very first come the best seeing and then it worsens quite soon. So, if I like to image the sun in bo...
by Valery
Mon Apr 08, 2019 12:46 am
Forum: This is SolarChat !!
Topic: A very long awaited GREAT solar spot AR12738! 150mm refractor.
Replies: 10
Views: 230

Re: A very long awaited GREAT solar spot AR12738! 150mm refractor.

krakatoa1883 wrote:
Sun Apr 07, 2019 7:19 pm
It could be AR12736 that returns, its latitude corresponds.
And what with their longidudes? It will be nice if it will live two or thee more rotations!


Valery
by Valery
Mon Apr 08, 2019 12:43 am
Forum: Solar Scope Modifications
Topic: Crazy Idea...?
Replies: 4
Views: 190

Re: Crazy Idea...?

I am quite pessimistic here. All these optical liquids have too high temperature dependance of their refractive indexes. Leackage problem is also not very easy to solve. Temperature gradients within the etalon is a major problem as well. The TEC system must be much more precise than the systems whic...
by Valery
Sun Apr 07, 2019 7:07 pm
Forum: This is SolarChat !!
Topic: A very long awaited GREAT solar spot AR12738! 150mm refractor.
Replies: 10
Views: 230

Re: A very long awaited GREAT solar spot AR12738! 150mm refractor.

MalVeauX wrote:
Sun Apr 07, 2019 4:36 pm
Very cool, I hope it persists the next two days!

Very best,
I'm sure you meant twenty-two or at least twelve days! Such large sun spots live longer than two days, usually at least twelve days.


Valery
by Valery
Sun Apr 07, 2019 4:03 pm
Forum: This is SolarChat !!
Topic: Saturday Sun 6th April
Replies: 15
Views: 230

Re: Saturday Sun 6th April

Nice images, Stu.

BTW. When my 6" refractors delivers the images like this 20190406_AR2737_Ha_Mono then my C8 sure delivers better images and very often the C11 also works so well that I can obtain the resolution at it's limit! So, you need to try RC 10" more often.


Valery
by Valery
Sun Apr 07, 2019 1:31 pm
Forum: This is SolarChat !!
Topic: A very long awaited GREAT solar spot AR12738! 150mm refractor.
Replies: 10
Views: 230

A very long awaited GREAT solar spot AR12738! 150mm refractor.

Hi all, FINALLY !!! We see a new great sun spot at the western limb! Again, as usual, a great sun spot was born on the opposite side of the sun. Pity that we didn't see how it was born and grew to the present size. However we should be happy to see it anyway. I took several photos in a poor conditio...
by Valery
Sat Apr 06, 2019 7:34 pm
Forum: This is SolarChat !!
Topic: Ca K images - March 31 - TOA150
Replies: 6
Views: 136

Re: Ca K images - March 31 - TOA150

Excellent image for a 6" aperture, Christian.

Thanks for sharing.


Valery
by Valery
Sat Apr 06, 2019 5:02 pm
Forum: This is SolarChat !!
Topic: When I win the lottery
Replies: 18
Views: 326

Re: When I win the lottery

This is a doublet lens 300mm F/7 with a huge spherochromatism at any wave length except the one it was optimized for. One should be really crazy to pay 6-x digits money for such a telescope. Righ now we making professional level 16" solar reflection telescope for one professional observatory in Rado...
by Valery
Fri Apr 05, 2019 11:44 pm
Forum: This is SolarChat !!
Topic: Light version from AR2737 April 04
Replies: 9
Views: 159

Re: Light version from AR2737 April 04

Congratulations Maurits! For me it is by far the best picture you posted on Solarchat. I agree, Bart. Maurits, you did a great job. Still, with some more processing, some more details can be unveiled in this already excellent image. I took the liberty to slightly improve (to my taste) the visibilit...
by Valery
Fri Apr 05, 2019 11:05 pm
Forum: This is SolarChat !!
Topic: Quark Chromosphere vs Prominence model?
Replies: 5
Views: 112

Re: Quark Chromosphere vs Prominence model?

Jim, If to compare with my three last Quarks (all Chromosphere models) then yes, Prominence model has significatntly brighter picture and promonences look more impressive. Especially faint disconnected which flying over the limb. Valery Valery, do you have an example image, recorded with the Quark ...
by Valery
Fri Apr 05, 2019 1:26 pm
Forum: This is SolarChat !!
Topic: Quark Chromosphere vs Prominence model?
Replies: 5
Views: 112

Re: Quark Chromosphere vs Prominence model?

Jim,

If to compare with my three last Quarks (all Chromosphere models) then yes, Prominence model has significatntly brighter picture and promonences look more impressive. Especially faint disconnected which flying over the limb.


Valery
by Valery
Thu Apr 04, 2019 1:16 am
Forum: This is SolarChat !!
Topic: AR2737 High Res in HA & WL & Full Disc in HA | April 3rd 2019
Replies: 10
Views: 175

Re: AR2737 High Res in HA & WL & Full Disc in HA | April 3rd 2019

My congratulations with starting of a high res imaging season, Marty. I would give you an advice, if I may. Do not use any HD reducers in a front of Quark. There should be no any additional optics like reducers in front of Quark. You always will get un-aberrated images and stable F/43 cone at the et...