CaK disk, September 11th, 2020

this is the main message area for anything solar :)
Post Reply
LTHB
Im an EXPERT!
Im an EXPERT!
Posts: 278
Joined: Thu Mar 03, 2016 7:31 pm
Been thanked: 240 times

CaK disk, September 11th, 2020

Post by LTHB » Sat Sep 12, 2020 8:19 pm

Having seen Ken's and Terry's nice CaK proms last week I tried if I could capture some yesterday. I had to turn up exposure time to 10ms, and it took me some time to pull out the proms from the scattered light in processing, but I think they are visible.

Image

Image

Full resolution here: https://live.staticflickr.com/65535/503 ... b204_o.jpg https://live.staticflickr.com/65535/503 ... 70f7_o.jpg

Kind regards,

Frank



User avatar
rsfoto
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 3260
Joined: Mon Jun 18, 2012 8:30 pm
Location: San Luis Potosi, México
Has thanked: 1915 times
Been thanked: 1404 times

Re: CaK disk, September 11th, 2020

Post by rsfoto » Sat Sep 12, 2020 8:29 pm

Hi Frank,

Very good.


regards Rainer

Observatorio Real de 14 San Luis Potosi Mexico

EGRAY_OBSERVATORY
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 2107
Joined: Mon May 18, 2020 4:45 pm
Location: Essex, S.E.England
Been thanked: 1109 times

Re: CaK disk, September 11th, 2020

Post by EGRAY_OBSERVATORY » Sat Sep 12, 2020 9:30 pm

Hi Frank, thanks for the useful images and yes to turn-up the exposure-time a little and/or to adjust the brightness/contrast in the processing stage, does allow for the proms to appear. Also to make an identical image in Ha to compare the differences is useful.

Yours have come out very well...
I guess we will see more of the Cal-K+proms in the future...

Unable to try again today, but hopefully tomorrow.

Thanks for sharing
Regards
Terry



User avatar
Merlin66
Librarian
Librarian
Posts: 3611
Joined: Tue Dec 13, 2011 1:23 pm
Location: St Leonards, Australia
Has thanked: 15 times
Been thanked: 70 times
Contact:

Re: CaK disk, September 11th, 2020

Post by Merlin66 » Sat Sep 12, 2020 10:57 pm

Frank,
Well done!
Very impressive outcome.


"Astronomical Spectroscopy - The Final Frontier" - to boldly go where few amateurs have gone before
https://groups.io/g/astronomicalspectroscopy  
http://astronomicalspectroscopy.com
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer

User avatar
DeepSolar64
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 3635
Joined: Thu Sep 05, 2019 12:19 am
Location: Edneyville North Carolina U.S.A.
Has thanked: 1693 times
Been thanked: 1702 times

Re: CaK disk, September 11th, 2020

Post by DeepSolar64 » Sun Sep 13, 2020 1:03 am

WoW, impressive. Looks really good!! It makes me think of a GONG CaK image if GONG worked in the CaK band.


Lunt 8x32 SUNoculars
Orion 70mm Solar Telescope
Celestron AstroMaster Alt/Az Mount
Meade Coronado SolarMax II 60 DS
Meade Coronado SolarMax II 90 DS
Meade Coronado AZS Alt/Az Mount
Astro-Tech AT72EDII with Altair solar wedge
Celestron NexStar 102GT with Altair solar wedge
Losmandy AZ8 Alt/Az Mount
Traq 60mm with Baader AstroSolar film
Lunt, Coronado, TeleVue, Orion, Celestron and Sears eyepieces

Image Visual Observer
" Way more fun to see it! "

User avatar
marktownley
Librarian
Librarian
Posts: 29794
Joined: Tue Oct 18, 2011 5:27 pm
Location: Brierley Hills, UK
Has thanked: 2876 times
Been thanked: 1161 times
Contact:

Re: CaK disk, September 11th, 2020

Post by marktownley » Sun Sep 13, 2020 7:17 am

Excellent result Frank


Image
http://brierleyhillsolar.blogspot.co.uk/
Solar images, a collection of all the most up to date live solar data on the web, imaging & processing tutorials - please take a look!

User avatar
Montana
Librarian
Librarian
Posts: 24315
Joined: Mon Oct 17, 2011 5:25 pm
Location: Cheshire, UK
Has thanked: 2885 times
Been thanked: 1094 times

Re: CaK disk, September 11th, 2020

Post by Montana » Sun Sep 13, 2020 11:13 am

This is really fabulous Frank, well done :bow :bow :bow

Alexandra



EGRAY_OBSERVATORY
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 2107
Joined: Mon May 18, 2020 4:45 pm
Location: Essex, S.E.England
Been thanked: 1109 times

Re: CaK disk, September 11th, 2020

Post by EGRAY_OBSERVATORY » Sun Sep 13, 2020 11:53 am

Very well done (if not actually an excellent/fab-version) of what Calcium-K can achieve with proms too.

I have just processed today's (13th) Cak-prom image and about to post.

excellent on the SPOD image too...

I suspect we have started something new (or otherwise)...

Terry



User avatar
JochenM
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 1955
Joined: Tue Dec 10, 2019 2:26 pm
Location: Belgium
Has thanked: 295 times
Been thanked: 613 times

Re: CaK disk, September 11th, 2020

Post by JochenM » Sun Sep 13, 2020 4:15 pm

That came out very nicely, Frank. Great work.


All my images at: https://flickr.com/photos/jochenmaes/
My photography site: http://jochenmaes.com/

LTHB
Im an EXPERT!
Im an EXPERT!
Posts: 278
Joined: Thu Mar 03, 2016 7:31 pm
Been thanked: 240 times

Re: CaK disk, September 11th, 2020

Post by LTHB » Sun Sep 13, 2020 8:18 pm

Thanks for the kind words!

James, you caught me! Actually I had lots of scattered light around the disk and in quite uneven patches. I didn't really mind in the greyscale image, but in the violet version the disk had a faintly coloured rainbow-like looking halo that looked strange and distracting. Making it look like the GONG images was the way to hide the halo...

Regards,

Frank



User avatar
Montana
Librarian
Librarian
Posts: 24315
Joined: Mon Oct 17, 2011 5:25 pm
Location: Cheshire, UK
Has thanked: 2885 times
Been thanked: 1094 times

Re: CaK disk, September 11th, 2020

Post by Montana » Mon Sep 14, 2020 11:18 am

Ah! so now we know why GONG does it :lol:

Alexandra



Post Reply