Search found 2742 matches

by Valery
Thu May 24, 2018 8:58 pm
Forum: This is SolarChat !!
Topic: Messing With a Sodium Quark - 22nd May
Replies: 17
Views: 157

Re: Messing With a Sodium Quark - 22nd May

They'd better make Quarks Ca II I (8542,1A ) where one can image the sun with
details which look like an impressive mixture of Ca-K and H-a.
by Valery
Thu May 24, 2018 4:33 pm
Forum: This is SolarChat !!
Topic: A very big flower on the Sun. May 23 2018.
Replies: 2
Views: 25

A very big flower on the Sun. May 23 2018.

Hi all,

Yesterday the Sun presented to us a very big flower on it's surface (around the AR12711).

See it here as were imaged with C11 280mm SCT + ARIES 295mm DERF and double staked etalons.

The 12710 also were imaged.


Thanks for looking.


Valery
by Valery
Wed May 23, 2018 9:47 am
Forum: This is SolarChat !!
Topic: Messing With a Sodium Quark - 22nd May
Replies: 17
Views: 157

Re: Messing With a Sodium Quark - 22nd May

No flat Valery, you can see the dust bunnies if you look carefully in the same place on both images. It has a very well illuminated and even fov. Thanks. I think that it will be better if Day Star use such a uniform mica crystalls for more important H-a Quarks where the evenness of the FOV is MUCH ...
by Valery
Wed May 23, 2018 8:45 am
Forum: This is SolarChat !!
Topic: Messing With a Sodium Quark - 22nd May
Replies: 17
Views: 157

Re: Messing With a Sodium Quark - 22nd May

marktownley wrote:
Wed May 23, 2018 6:43 am
Thanks Stu! Might be a while before there's a big spot again, but will certainly be fun playing around with the larger apertures.
Mark, have you applied a flat field?


Valery
by Valery
Sun May 20, 2018 1:33 pm
Forum: This is SolarChat !!
Topic: Today's SUN (20180520) | Taka EM400 first imaging session
Replies: 5
Views: 234

Re: Today's SUN (20180520) | Taka EM400 first imaging session

Nice! But... but... I can't see any difference in performance vs images you normally doing with EM200. :)
All are equally nice.

OK. Have you ever tried to image with 152mm scope in the dome and outside, from a grass lawn?


Valery
by Valery
Sun May 20, 2018 1:25 am
Forum: This is SolarChat !!
Topic: First trial - T250 + CaK
Replies: 8
Views: 204

Re: First trial - T250 + CaK

Good start in the CaK, Alex!

The aperture does it's job nicely!

Valery
by Valery
Sun May 20, 2018 1:23 am
Forum: This is SolarChat !!
Topic: Takahashi EM400 in | EM200 out
Replies: 8
Views: 143

Re: Takahashi EM400 in | EM200 out

Fogot to ask another question: do you plan to move also to a larger aperture telescope?
by Valery
Sun May 20, 2018 1:22 am
Forum: This is SolarChat !!
Topic: Takahashi EM400 in | EM200 out
Replies: 8
Views: 143

Re: Takahashi EM400 in | EM200 out

Congratulates with this new beautiful mount, Pedro!

It is easy to buy a new equipment living in such a place. No law about poor weather as the compliment for a new equipment purchase! :)


BTW. Do you plan to change also the pier for a bigger in diameter one?
by Valery
Sat May 19, 2018 5:56 pm
Forum: This is SolarChat !!
Topic: First worthwhile results from a high res set up
Replies: 12
Views: 252

Re: First worthwhile results from a high res set up

Hi Lou, Good results for the start. BTW I would suggest to use a focal reducer (with different spaces) to make image scale smaller. Different F/D for different seeing conditions and objects. This also give you shorter exposures and faster fpl =better fight against the seeing, more stacked images, hi...
by Valery
Tue May 15, 2018 3:07 am
Forum: This is SolarChat !!
Topic: May 13 2018 AR12709 in Ca-K with 280mm aperture
Replies: 8
Views: 164

May 13 2018 AR12709 in Ca-K with 280mm aperture

Hi all, Here is the photo of the AR12709 as were seen early morning May 13 2018 in the Ca-K line. Seeing was mostly poor with some brief improvements. I took three movies of this tiny sunspot group and this image is the best of these three. Telescope used: C11 280mm F/10 SCT equipped with the ARIES ...
by Valery
Tue May 15, 2018 2:18 am
Forum: This is SolarChat !!
Topic: 13th of May 2018, 150mm Ha in High Res, AR2709 & Proms!
Replies: 20
Views: 315

Re: 13th of May 2018, 150mm Ha in High Res, AR2709 & Proms!

Beautiful prominence in a 3-D appearance!

Good surface details too. But I'd added a bit more scale for the surface details. Larger scale brings more of "volume" effect.


Valery
by Valery
Tue May 15, 2018 1:39 am
Forum: This is SolarChat !!
Topic: Hydrogen Sun 14th May 2018
Replies: 17
Views: 283

Re: Hydrogen Sun 14th May 2018

Very good results, Stu! Hope this warm season will bring us more good seeing.

Valery
by Valery
Mon May 14, 2018 4:38 pm
Forum: This is SolarChat !!
Topic: AR12708 in H-a and at 655nm 280mm
Replies: 6
Views: 124

AR12708 in H-a and at 655nm 280mm

Hi all, Here are the images of the AR12708 taken May 7 2108 at a moderate seeing condition. Telescope is C11 280mm F/10 SCT equipped with the ARIES full size two bands DERF filter. The first image has been taken with unheated etalon (far blue wing) and the second image at the H-a core. One can see h...
by Valery
Mon May 14, 2018 2:12 pm
Forum: This is SolarChat !!
Topic: The Sun on May 5 2018 as seen with 280mm aperture.
Replies: 13
Views: 350

Re: The Sun on May 5 2018 as seen with 280mm aperture.

marktownley wrote:
Mon May 14, 2018 1:38 pm
Are you using the SAFIX with the CaK shots Valery?
This time I didn't use the SAFIX. Another corrective lens has been used.


Valery.
by Valery
Mon May 14, 2018 11:04 am
Forum: This is SolarChat !!
Topic: The Sun on May 5 2018 as seen with 280mm aperture.
Replies: 13
Views: 350

Re: The Sun on May 5 2018 as seen with 280mm aperture.

Thank you, Pedro and Mark.

I hope to make more hig res solar photos in the CaK line.


Valery
by Valery
Mon May 14, 2018 12:14 am
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: Omega Optical CaH filter
Replies: 16
Views: 361

Re: Omega Optical CaH filter

My experience with Omega is rather poor. The filter he sent me is the worst optical detail I have ever saw.

Here is this filter unevenness in CWL. I stacked it with Lunt etalon.


Valery
by Valery
Sun May 13, 2018 2:51 pm
Forum: This is SolarChat !!
Topic: Sol from the 12th of May 2018.
Replies: 6
Views: 102

Re: Sol from the 12th of May 2018.

Great series of images, Eric!

Thanks for sharing.


Valery
by Valery
Wed May 09, 2018 7:02 am
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: Baader Triband SCT
Replies: 19
Views: 570

Re: Baader Triband SCT

Presently, the largest ERF are made by Aries (about 14") and Baader (280 mm). This being said, it would be nice to have another provider there (further to Aries, Baader, Beloptik and AiryLab). I can only confirm, that custom made large DERF filters with necessary precision are expensive. We are som...
by Valery
Tue May 08, 2018 3:21 pm
Forum: This is SolarChat !!
Topic: The Sun on May 5 2018 as seen with 280mm aperture.
Replies: 13
Views: 350

Re: The Sun on May 5 2018 as seen with 280mm aperture.

Excellent resolution, Valery. AR2708 is so tiny.... Franco Yes, Franco, the resolution here at 393nm is about as a 465mm telescope has at H-a 656nm. A par with 300mm telescope at 430nm G-band. As soon as my SCT has obtained a corrective optics for 393nm, the images at this wave length became much b...
by Valery
Mon May 07, 2018 4:14 am
Forum: This is SolarChat !!
Topic: The Sun on May 5 2018 as seen with 280mm aperture.
Replies: 13
Views: 350

The Sun on May 5 2018 as seen with 280mm aperture.

This morning was a calm with good seeing. I caprtured the sun in CaK and H-a.

The image in CaK was taken first when the seeing didn't start to degrade with the sun going higher in the sky.
by Valery
Mon May 07, 2018 2:43 am
Forum: This is SolarChat !!
Topic: Tiny AR2706 in Ca K with the TOA150 on May 6
Replies: 9
Views: 257

Re: Tiny AR2706 in Ca K with the TOA150 on May 6

Hello Christian, Just a perfect image for such an aperture! Christian, tell us how much better this ASI290 camera for CaK imaging vs your older Basler 1920-155 with the IMX174chip ? Your latest CaK images are so free from a noise and in particular from the read out noice! Is this camera a cooled one...
by Valery
Sun May 06, 2018 8:00 pm
Forum: This is SolarChat !!
Topic: April 24 AR12706 High Res in H-a 280mm SCT + ARIES DERF
Replies: 5
Views: 209

April 24 AR12706 High Res in H-a 280mm SCT + ARIES DERF

Hi all,

April 24 AR12706 High Res in H-a 280mm SCT + ARIES DERF

Average to poor seeing.


Valery
by Valery
Sun May 06, 2018 7:39 pm
Forum: This is SolarChat !!
Topic: Celestron fun again 6th May and boat solar transit
Replies: 8
Views: 217

Re: Celestron fun again 6th May and boat solar transit

[hot place] Alexandra,

Nice to see your high res images with C11 scope.

Granulation is near perfect and I especially like the image of the spots.

BTW. To make imaging at red light easier, make a gamma setting to a lower value (high contrast).


Valery
by Valery
Sat May 05, 2018 6:51 pm
Forum: This is SolarChat !!
Topic: A Few from the end of the Day
Replies: 8
Views: 142

Re: A Few from the end of the Day

You do live in such a nice place where such fantastic views are so often seen!

Thanks for sharing these and other fantastic images with us.


Valery