Search found 2775 matches

by Valery
Tue Jun 19, 2018 4:40 pm
Forum: This is SolarChat !!
Topic: Solar surface activity at high res June 19 2018 280mm aperture.
Replies: 1
Views: 24

Solar surface activity at high res June 19 2018 280mm aperture.

Hi here, Today was a good transparency sunny day with no any single cloud on the sky. The sky was really blue with a very fresh air. Fortunately the seeing also was good when it calms. Here are two major active areas on todays moderately active sun. The AR12713 and emergency flux AR12714. Telescopes...
by Valery
Fri Jun 15, 2018 3:31 pm
Forum: Solar Scope Modifications
Topic: 66245 Heatsink mirror mount for 81045
Replies: 13
Views: 203

Re: 66245 Heatsink mirror mount for 81045

So basically this is a UV Wedge? Yikes on those prices. ~$800 USD. Can get a Lunt module for this. I'm curious about a comparison to see if it's worth while (especially if it allows use of a large aperture instrument, over 4 inches). Very best, For about the same money you can order a front mounted...
by Valery
Sun Jun 10, 2018 7:19 am
Forum: This is SolarChat !!
Topic: AR12712 in CaK and H-a with 280mm scope at excellent seeing.
Replies: 18
Views: 434

Re: AR12712 in CaK and H-a with 280mm scope at excellent seeing.

When i've got the time I will sit for hours on end watching the computer screen for these magic moments of seeing, but they never come here in my part of the UK... Is your location so much different from that where Alexandra lives? She was able to catch fantastic images in white light and this is n...
by Valery
Sat Jun 09, 2018 8:47 am
Forum: This is SolarChat !!
Topic: NOAA 12565/66/67 at a high resolution with a C14
Replies: 5
Views: 195

Re: NOAA 12565/66/67 at a high resolution with a C14

Montana wrote:
Fri Jun 08, 2018 6:33 am
however it lacks your usual smooth as silk touch
This image was taken (and not FF calibrated) almost 2 years ago. Now my technique is abit better and the camera is better, as well as my latest etalon.
by Valery
Thu Jun 07, 2018 6:08 pm
Forum: This is SolarChat !!
Topic: NOAA 12565/66/67 at a high resolution with a C14
Replies: 5
Views: 195

NOAA 12565/66/67 at a high resolution with a C14

Hi friends,

In a memory of the last solar maximum, from the abyss of my solar archive: a very imperssive bunch of sun spot groups - NOAA 12565/66/67 at a high resolution.

Equipment used: C14 + ARIES 385mm DERF + 0,25A etalon @ F/48 + 0,6x reducer + ZWO IMX174.

Thanks for looking.


Valery
by Valery
Thu Jun 07, 2018 1:37 pm
Forum: This is SolarChat !!
Topic: hydrogen alpha - 0.0 angstroms
Replies: 7
Views: 246

Re: hydrogen alpha - 0.0 angstroms

They have amazing seeing conditions, I need to move there :) Alexandra This telescope vacuum tube and adaptive optics which uses real time wave front analyzer with closed loop. Therefore after the seeing reaches a certain level (say, 1,5") then the AO makes the image literally diffraction limited f...
by Valery
Wed Jun 06, 2018 4:16 pm
Forum: This is SolarChat !!
Topic: AR12712 in CaK and H-a with 280mm scope at excellent seeing.
Replies: 18
Views: 434

Re: AR12712 in CaK and H-a with 280mm scope at excellent seeing.

I'm always impressed with your pictures Valery, I wish I had your seeing conditions instead of the grotty ones I get on a regular basis. Mark, This is a deep misconception that I have such a beautiful seeing. My current conditions of observing are truly terrible. And only in the morning (and far no...
by Valery
Tue Jun 05, 2018 6:00 pm
Forum: This is SolarChat !!
Topic: AR12712 in CaK and H-a with 280mm scope at excellent seeing.
Replies: 18
Views: 434

Re: AR12712 in CaK and H-a with 280mm scope at excellent seeing.

Valery: Answering what you asked me on the other post, hope that soon I will be able to use the full size Aries ERF, with the 10" F/20 TEC Maksutov and also with a very good corrected 12" F/10 Meade SCT. I have taken apart the Mak to clean the optics and to recollimate the system and I am also work...
by Valery
Tue Jun 05, 2018 2:14 pm
Forum: This is SolarChat !!
Topic: AR12709 remnants close up in the Ca II K line.
Replies: 16
Views: 445

Re: AR12709 remnants close up in the Ca II K line.

GreatAttractor wrote:
Sun Jun 03, 2018 2:37 pm
That's a great "diamond dust", Valery!

Khe Khe... diamond dust? Thanks for such an unusual allegory.


Valery
by Valery
Tue Jun 05, 2018 11:39 am
Forum: This is SolarChat !!
Topic: AR12712 in CaK and H-a with 280mm scope at excellent seeing.
Replies: 18
Views: 434

AR12712 in CaK and H-a with 280mm scope at excellent seeing.

Morning May 31 2018 was a totally clear, very transparent (a very deep blue sky) with a stable light wind (4-5m per sec). The seeing was good to excellent even at 393nm wave length. I managed to take some high resolution images. Here is the AR12712 in two bands - Ca-K and H-a. Telescope used is my t...
by Valery
Tue Jun 05, 2018 6:58 am
Forum: Solar Scope Modifications
Topic: WILL IT BURN? - ..Filter Killer..
Replies: 35
Views: 746

Re: WILL IT BURN? - ..Filter Killer..

okay here is the baader planetarium B-ccd filter, BURNING inside of a solid magnesium telescope. This is a reflection from the gold coating. Better luck next time gadget. Valery: I have nothing to prove. This is a situation of reality, and I am doing all this for the sake of experimentation. Out of...
by Valery
Sun Jun 03, 2018 2:00 pm
Forum: This is SolarChat !!
Topic: AR12709 remnants close up in the Ca II K line.
Replies: 16
Views: 445

Re: AR12709 remnants close up in the Ca II K line.

Thank you, Eric!

BTW. When do you plan to start imaging with your 10" TEC Mak and 10" ARIES DERF?


Valery
by Valery
Sun Jun 03, 2018 1:54 pm
Forum: This is SolarChat !!
Topic: Sunday Sun 3rd June_RCT_Ha
Replies: 13
Views: 246

Re: Sunday Sun 3rd June_RCT_Ha

Hi Stu, The result is clearly better than all before! Nice processing too. I noted that you do use some oversampling. The image scale you do use with a 10" scope is significatly larger than I do use with my 11" scope. Smaller scale will makes imaging easier - shorter exposure, larger FOV, better see...
by Valery
Sat Jun 02, 2018 1:08 pm
Forum: Solar Scope Modifications
Topic: WILL IT BURN? - ..Filter Killer..
Replies: 35
Views: 746

Re: WILL IT BURN? - ..Filter Killer..

TheSkyBurner, 1. The filters you tested were not designed for use in telescopes pointed at the summer sun, without full size ERF filter and near focus. These filters were not intended for such a critical use. 2. Some peoples trying to save money and start to use these filters as secondary or even ma...
by Valery
Sat Jun 02, 2018 11:26 am
Forum: Solar Scope Modifications
Topic: Front ERF vs Internal ERF? Minimum size?
Replies: 26
Views: 664

Re: Front ERF vs Internal ERF? Minimum size?

For h-alpha the baader planetarium d-erf is definatley by far #1 and it will always beat anything else. It seems to increase contrast noticeably on all the scopes that use them. Nothing else compares. TheSkyBurner and Merlin66, Any factual prove? Pictures, contrast measurements on the same equipmen...
by Valery
Fri Jun 01, 2018 2:05 pm
Forum: This is SolarChat !!
Topic: The Sun in three different WL C11 scope.
Replies: 9
Views: 279

Re: The Sun in three different WL C11 scope.

Thanks to all for your kind words.


Valery
by Valery
Thu May 31, 2018 6:10 pm
Forum: Solar Scope Modifications
Topic: Front ERF vs Internal ERF? Minimum size?
Replies: 26
Views: 664

Re: Front ERF vs Internal ERF? Minimum size?

Marty, ask any planetary and lunar imagers - do they willing to put even a very weak source of heat inside their telescopes. Any erf can't reflect all the unwanted energy and will absorb some heat and so, produce some air turbulence. This were especially well seen with the Quark Chromosphere worked ...
by Valery
Wed May 30, 2018 3:04 pm
Forum: This is SolarChat !!
Topic: The Sun in three different WL C11 scope.
Replies: 9
Views: 279

The Sun in three different WL C11 scope.

Hello, Here are the results of my observing session of May 28 2018. Unfortnately, the seeing was mediocre at best, especially in the CaK. Images were obtained in CaK, then in 655nm continuum (unheated etalon) and then in H-a core. Very different appearance of the Sun. It is a shame that the best see...
by Valery
Wed May 30, 2018 8:47 am
Forum: This is SolarChat !!
Topic: Solar selection - 27 May
Replies: 11
Views: 213

Re: Solar selection - 27 May

Hi Brian,

Excellent debute! Congratulates with your new purchases and so nice first results.


BTW. Have you applied a flat field to your images taken with Quark chromosphere?


Valery
by Valery
Wed May 30, 2018 8:33 am
Forum: This is SolarChat !!
Topic: AR12709 remnants close up in the Ca II K line.
Replies: 16
Views: 445

Re: AR12709 remnants close up in the Ca II K line.

Ledies and gentlemen,

Just read your so positive commets. Thank you all.

best,

Valery
by Valery
Wed May 30, 2018 12:40 am
Forum: This is SolarChat !!
Topic: MAGNESIUM QUARK!
Replies: 3
Views: 138

Re: MAGNESIUM QUARK!

I already saw images taken with this Quark. Sort of images like with sodium Quark, like images I routinely obtain with unheated H-a Chromosphere Quark.

H-a, CaK, CaH and Ca I (8542,1A) all are much more interesting lines.
by Valery
Tue May 29, 2018 4:28 am
Forum: This is SolarChat !!
Topic: 27 of May 2018 280mm AR2712 HR
Replies: 8
Views: 192

Re: 27 of May 2018 280mm AR2712 HR

Hello everybody, At weekends, 27 of May I finally got first decent shot with 280mm. Not like Valery's one but very looks like. :) It took for me more than one year to master the seeing. Joke. Just luck... C11 (ERF), LS80THa, Barlow 2x, Grasshopper. 200 from 1100 frames. Thank you for looking! :) Va...
by Valery
Mon May 28, 2018 4:47 pm
Forum: This is SolarChat !!
Topic: Sunday Sun 27th May
Replies: 10
Views: 213

Re: Sunday Sun 27th May

Nice images, Stu.

DS works great.


Valery.
by Valery
Mon May 28, 2018 4:42 pm
Forum: This is SolarChat !!
Topic: Sol from the 26th of May 2018.
Replies: 10
Views: 228

Re: Sol from the 26th of May 2018.

Very nice set of images, Eric!

I especially like the CaK and the images with Herschel prism.

Thanks for sharing them with us.


Valery