Search found 1041 matches

by krakatoa1883
Sat Jun 26, 2021 3:02 pm
Forum: This is SolarChat !!
Topic: Surge Prominence at SE, Animation with bad seeing
Replies: 12
Views: 574

Re: Surge Prominence at SE, Animation with bad seeing

Great animation indeed in spite of the seeing, well done!
by krakatoa1883
Sat Jun 26, 2021 3:00 pm
Forum: This is SolarChat !!
Topic: June 26 - AR12835, proms and discs
Replies: 13
Views: 494

June 26 - AR12835, proms and discs

Very bad seeing today here due to high currents flowing on the south border of a UK depression and the north border of an African anticyclone. But the sunny day and the presence of the new 12835 active region strongly invited to look at the Sun. I tried to image the new AR in CaK but the result was ...
by krakatoa1883
Fri Jun 25, 2021 9:08 am
Forum: This is SolarChat !!
Topic: Sun FD in H-Alpha and CaK 23th of June 2021
Replies: 9
Views: 432

Re: Sun FD in H-Alpha and CaK 23th of June 2021

Fine images, well processed.
by krakatoa1883
Tue Jun 22, 2021 2:07 pm
Forum: This is SolarChat !!
Topic: CaK imaging of the SUN, FD, 20-06-2021.
Replies: 13
Views: 622

Re: CaK imaging of the SUN, FD, 20-06-2021.

Very fine discs especially @full res
by krakatoa1883
Tue Jun 22, 2021 1:53 pm
Forum: This is SolarChat !!
Topic: Heads Up 22nd June
Replies: 13
Views: 479

Re: Heads Up 22nd June

Fine captures, Nigella, beautiful cat. My cats too love to stay with me while at the telescope.
by krakatoa1883
Tue Jun 22, 2021 1:48 pm
Forum: This is SolarChat !!
Topic: Animation of NW Sun, 19 June 2021, 111 minutes, 115 frames
Replies: 9
Views: 529

Re: Animation of NW Sun, 19 June 2021, 111 minutes, 115 frames

Fantastic video... 111 minutes it's definitely beyond my patience :lol:
by krakatoa1883
Tue Jun 22, 2021 1:37 pm
Forum: This is SolarChat !!
Topic: AR2833 and FDs in various lights 22nd June 2021
Replies: 20
Views: 600

Re: AR2833 and FDs in various lights 22nd June 2021

Great images, Stu, excellent work. H-alpha is particularly beautiful and well processed.
by krakatoa1883
Tue Jun 22, 2021 1:35 pm
Forum: This is SolarChat !!
Topic: AR12833 and a long filament
Replies: 15
Views: 523

Re: AR12833 and a long filament

Many thanks to all of you, much appreciated :)
by krakatoa1883
Mon Jun 21, 2021 6:23 pm
Forum: This is SolarChat !!
Topic: AR12833 and a long filament
Replies: 15
Views: 523

AR12833 and a long filament

The region around 12833 countinues to be very interesting. The spot is several days old but still persists and in H alpha is really spectacular with that filamentary penumbra that makes it similar to a sea anemone. That long filament to the east of it is a nice addition to the picture. Thanks for lo...
by krakatoa1883
Mon Jun 21, 2021 6:08 pm
Forum: This is SolarChat !!
Topic: Animation AR12833, 2021-6-20, 92 frames, 90 minutes
Replies: 8
Views: 378

Re: Animation AR12833, 2021-6-20, 92 frames, 90 minutes

Great work, Alexandros, really impressive.
by krakatoa1883
Sun Jun 20, 2021 2:53 pm
Forum: This is SolarChat !!
Topic: Today's SUN (20210620) | FD H-alpha
Replies: 9
Views: 507

Re: Today's SUN (20210620) | FD H-alpha

Very nice discs, Pedro, and beautiful plants too.
by krakatoa1883
Sat Jun 19, 2021 7:49 am
Forum: This is SolarChat !!
Topic: AR12833 in H-alpha
Replies: 9
Views: 401

Re: AR12833 in H-alpha

Thanks, Peter, now is much better! I don't have PS, I am using GIMP but the gradient tool is complicated, I don't like it.
by krakatoa1883
Fri Jun 18, 2021 8:20 pm
Forum: This is SolarChat !!
Topic: 1h Animation of many solar activities, 17 June 2021
Replies: 24
Views: 969

Re: 1h Animation of many solar activities, 17 June 2021

Great animation, you have done an excellent work. I follow the same steps for my own animations but I use GIMP instead of PS for generating the gif.
by krakatoa1883
Fri Jun 18, 2021 3:34 pm
Forum: This is SolarChat !!
Topic: AR12833 in H-alpha
Replies: 9
Views: 401

Re: AR12833 in H-alpha

Thanks Alexandra. Franco, I was really in a hurry, usually I take a flat but this time i didn't so the upper part of the image is darker than the rest....
by krakatoa1883
Fri Jun 18, 2021 2:39 pm
Forum: This is SolarChat !!
Topic: AR2833 and proms June 17th, 2021
Replies: 17
Views: 704

Re: AR2833 and proms June 17th, 2021

Beautiful work, Franco, are blue proms H alpha too ?
by krakatoa1883
Fri Jun 18, 2021 2:38 pm
Forum: This is SolarChat !!
Topic: 18th June Quick process from this morning
Replies: 16
Views: 508

Re: 18th June Quick process from this morning

Very fine CaK discs, very sharp. Have you used any focal reducer ?
by krakatoa1883
Fri Jun 18, 2021 2:36 pm
Forum: This is SolarChat !!
Topic: AR12833 in H-alpha
Replies: 9
Views: 401

AR12833 in H-alpha

This spot is still very prominent but doesn't seem to be evolving beyond the present stage. It's a nice view in white light because of the well developed penumbra and in H-alpha too as it is surrounded by several filaments. Below is an image I took with my usual setup, since I was in a hurry I compl...
by krakatoa1883
Sun Jun 06, 2021 5:51 pm
Forum: This is SolarChat !!
Topic: Answer by LUNT re: Hazy area on front internal lens of 130MT
Replies: 15
Views: 588

Re: Answer by LUNT re: Hazy area on front internal lens of 130MT

Be very careful in dismantling that kind of objective. Lenses in triplets are usually held on the optical axis by means of radial screws on the the cell that push on the lens edges, check if this is the case by removing the dew shield. If yes, you will need to loose these screws before to remove the...
by krakatoa1883
Sun Jun 06, 2021 5:29 pm
Forum: This is SolarChat !!
Topic: Some more CaK shots.
Replies: 9
Views: 390

Re: Some more CaK shots.

Fne images, sharp and well processed
by krakatoa1883
Sat Jun 05, 2021 5:44 pm
Forum: This is SolarChat !!
Topic: Heads Up 5th June
Replies: 13
Views: 456

Re: Heads Up 5th June

I usually apply the gamma in post-processing, use little of it in H-alpha as it helps while focusing. I think it's only a matter of personal preferences.
by krakatoa1883
Sat Jun 05, 2021 2:29 pm
Forum: This is SolarChat !!
Topic: 5.06.2021 AR12828, 9 and a flare in the SW.
Replies: 12
Views: 354

Re: 5.06.2021 AR12828, 9 and a flare in the SW.

Good captures, much detailed. Looked at your blog, a 7 inch refractor is my dream :D
by krakatoa1883
Sat Jun 05, 2021 2:25 pm
Forum: This is SolarChat !!
Topic: Heads Up 5th June
Replies: 13
Views: 456

Re: Heads Up 5th June

Fine image, Nigella. Noted you keep the gamma all to the right, is it just for this picture or is it your normal practice ? I usually disable this function while taking the video.
by krakatoa1883
Sat Jun 05, 2021 2:15 pm
Forum: This is SolarChat !!
Topic: Today's SUN (20210604) | LUNT152 Good seeing
Replies: 8
Views: 485

Re: Today's SUN (20210604) | LUNT152 Good seeing

Fine set of images, Pedro, always enjoy your videos.
by krakatoa1883
Sat Jun 05, 2021 2:11 pm
Forum: This is SolarChat !!
Topic: AR 12827-12829 - Halpha
Replies: 13
Views: 445

Re: AR 12827-12829 - Halpha

Thanks Alex, thanks Franco How are you succeeding such a magnification with your Modified Celestron XLT 100ED. Barlow/Powermate of what magnification? And how is it modified with a Lunt etalon? the train is composed by Baader D-ERF 100 mm free aperture --> Celestron 100ED with Baader focuser --> Lun...
by krakatoa1883
Fri Jun 04, 2021 11:44 am
Forum: This is SolarChat !!
Topic: The rapid evolution of AR12824-AR12826
Replies: 19
Views: 544

Re: The rapid evolution of AR12824-AR12826

Very interesting panels, the Sun is really like a living creature.
by krakatoa1883
Fri Jun 04, 2021 8:56 am
Forum: This is SolarChat !!
Topic: Heads Up 4th June
Replies: 19
Views: 615

Re: Heads Up 4th June

All great images, with lot of contrast.
by krakatoa1883
Fri Jun 04, 2021 8:54 am
Forum: This is SolarChat !!
Topic: Quick Session Tal/PST mod 2/6/21
Replies: 17
Views: 610

Re: Quick Session Tal/PST mod 2/6/21

It seems working fine, good images!
by krakatoa1883
Fri Jun 04, 2021 8:48 am
Forum: This is SolarChat !!
Topic: AR 12827-12829 - Halpha
Replies: 13
Views: 445

Re: AR 12827-12829 - Halpha

Thanks to all for your kind comments!
by krakatoa1883
Thu Jun 03, 2021 4:34 pm
Forum: This is SolarChat !!
Topic: AR 12827-12829 - Halpha
Replies: 13
Views: 445

AR 12827-12829 - Halpha

An inviting day for solar imaging with quite still air. AR12827 still looks interesting but seems now decayed compared to few days ago. In white light is disappointing but in H-alpha is a different object. Same for AR12829.

Modified Celestron XLT 100ED, ASI 178MM. Thanks for looking.
by krakatoa1883
Thu Jun 03, 2021 4:23 pm
Forum: This is SolarChat !!
Topic: 2021-06-02 - AR2827 in CaK
Replies: 15
Views: 452

Re: 2021-06-02 - AR2827 in CaK

Fine images, the structure of the penumbra has been well resolved.
by krakatoa1883
Thu Jun 03, 2021 4:18 pm
Forum: This is SolarChat !!
Topic: AR12827 Closeup in CaK 2nd June
Replies: 16
Views: 485

Re: AR12827 Closeup in CaK 2nd June

Great CaK images, among the best I've seen so far. Grain borders are very crisp.
by krakatoa1883
Thu Jun 03, 2021 4:16 pm
Forum: This is SolarChat !!
Topic: AR2827 and FDs 1st June 2021
Replies: 20
Views: 544

Re: AR2827 and FDs 1st June 2021

Fantastic work, Stu, the AR looks impressive!
by krakatoa1883
Sun May 30, 2021 9:57 am
Forum: This is SolarChat !!
Topic: AR2824 and AR2826 my contribution May 27, 2021
Replies: 16
Views: 424

Re: AR2824 and AR2826 my contribution May 27, 2021

Great image, Franco, very detailed. :bow
by krakatoa1883
Sun May 23, 2021 6:15 pm
Forum: This is SolarChat !!
Topic: Belated May 16th Ha Images
Replies: 13
Views: 365

Re: Belated May 16th Ha Images

Fine set of images, Brian.
by krakatoa1883
Sun May 23, 2021 6:13 pm
Forum: This is SolarChat !!
Topic: Brief Ar12824 Ha - 22nd May
Replies: 13
Views: 371

Re: Brief Ar12824 Ha - 22nd May

Excellent captures, Mark, very sharp!
by krakatoa1883
Mon May 17, 2021 3:14 pm
Forum: Solar Scope Modifications
Topic: The ubiquitous Celestron C6-R
Replies: 36
Views: 10793

Re: The ubiquitous Celestron C6-R

he let me know he had heard that re-spacing the C6-R objective to approximately 2.3 mm made an excellent CaK line telescope. very interesting info, thank you. Having re-spaced several refractors I would just like to add that those under f/10 require spacers to be of equal thickness within 0.05 mm o...
by krakatoa1883
Sun May 16, 2021 6:24 pm
Forum: This is SolarChat !!
Topic: Flare in Calcium II K 12th May
Replies: 22
Views: 615

Re: Flare in Calcium II K 12th May

Fine images, Nigella, congratulations. I always prefer the non-colorized CaK, but it's a matter of personal taste, of course.
by krakatoa1883
Sun May 16, 2021 6:20 pm
Forum: This is SolarChat !!
Topic: AR2822 May 15, 2021
Replies: 16
Views: 453

Re: AR2822 May 15, 2021

ffellah wrote: Sun May 16, 2021 2:26 pmI have been working on this three image mosaic of a AR2822 close up. This was done with the HaT and a Quark Combo at f/27.5: the seeing was good but borderline for high res.
great images, Franco, very crisp.
by krakatoa1883
Sat May 15, 2021 1:25 pm
Forum: This is SolarChat !!
Topic: Sol from the 12th of May 2021.
Replies: 7
Views: 199

Re: Sol from the 12th of May 2021.

A fine set of images, Eric, great work.
by krakatoa1883
Sat May 15, 2021 1:23 pm
Forum: This is SolarChat !!
Topic: Sol 26-4-21 Ha
Replies: 7
Views: 227

Re: Sol 26-4-21 Ha

Beautiful images, very detailed.
by krakatoa1883
Sat May 15, 2021 1:21 pm
Forum: This is SolarChat !!
Topic: Quark-Ha with 6" f8
Replies: 16
Views: 558

Re: Quark-Ha with 6" f8

A fine Quark, however, mine is not so good. Great images.
by krakatoa1883
Sat May 15, 2021 8:25 am
Forum: This is SolarChat !!
Topic: Lunt Ca-K 1800 diagonal, ZWO160mm, SW ED100 focus issue
Replies: 9
Views: 420

Re: Lunt Ca-K 1800 diagonal, ZWO160mm, SW ED100 focus issue

The focuser is this one steeltrack.jpg In the USA Baader products are sold by AlpineAstro, so you can order from this page https://alpineastro.com/collections/focusers/products/2-bds-rt-baader-diamond-steeltrack-focuser together with the adapter for SW tubes https://alpineastro.com/collections/focus...
by krakatoa1883
Fri May 14, 2021 8:40 pm
Forum: This is SolarChat !!
Topic: Lunt Ca-K 1800 diagonal, ZWO160mm, SW ED100 focus issue
Replies: 9
Views: 420

Re: Lunt Ca-K 1800 diagonal, ZWO160mm, SW ED100 focus issue

This is a well known problem of some (not all) SW ED refractors, a step inside the mobile tube that prevents inserting long 2" accessories. There is no solution other than replacing the focuser as I made with my own 100ED. I suggest a Baader Steeltrack focuser, this will solve the problem with ...
by krakatoa1883
Mon May 10, 2021 8:25 am
Forum: This is SolarChat !!
Topic: May 9th - Short Ha Session
Replies: 12
Views: 369

Re: May 9th - Short Ha Session

Fine images, Brian, very sharp indeed.
by krakatoa1883
Mon May 10, 2021 8:24 am
Forum: This is SolarChat !!
Topic: May 9 2021 Observations. C class flare!
Replies: 11
Views: 352

Re: May 9 2021 Observations. C class flare!

Thanks for your report, James, this morning I have seen another group developing in the south.
by krakatoa1883
Mon May 10, 2021 8:11 am
Forum: This is SolarChat !!
Topic: Sun images of May 9
Replies: 11
Views: 347

Re: Sun images of May 9

Thanks for your comments, much appreciated :) I should find the time to get my Lunt50 working again... so far I have adapted the Lunt PT to four refractors, Skywatcher 150/750, Tecnosky 115/800, Takahashi 90/500 and Celestron 100/900, all with 104 mm front D-ERF. The least satisfactory was the small...
by krakatoa1883
Sun May 09, 2021 1:15 pm
Forum: This is SolarChat !!
Topic: Ha-Sun May 7, 2021
Replies: 10
Views: 294

Re: Ha-Sun May 7, 2021

A dramatic view, Jozef, like a maelstrom in the chromosphere.