Double-stack Ca K images 28 March and big thanks to Pedro
-
- Way More Fun to Share It!!
- Posts: 2161
- Joined: Sun Jun 14, 2015 4:46 pm
- Location: France
- Has thanked: 1 time
- Been thanked: 2725 times
- Contact:
Double-stack Ca K images 28 March and big thanks to Pedro
Hello,
Weather prospects are quite good for the coming days. But, not much solar activity, so I spent some time tuning my double stack Ca K configuration.
I remove the EO 394. In fact, it was a source of ghost images. Now, I only have the Astronomik blue filter (as internal ERF), the Alluxa 0.4 nm and the Barr 0.24 nm.
Last Zoom meeting, Pedro encouraged us to use "color visualisation" to tune double (or triple) stack configuration. This is indeed an excellent idea. Thanks Pedro !!
Here is the visualization of banding with the Alluxa filter not tuned :
http://astrosurf.com/viladrich/astro/so ... ding-1.png
And after tuning the Alluxa filter :
http://astrosurf.com/viladrich/astro/so ... ding-2.png
The Ca K disk image :
http://astrosurf.com/viladrich/astro/so ... SI1600.jpg
A zoom on this very small spot with a kind of umbral dot :
http://astrosurf.com/viladrich/astro/so ... ASI290.jpg
Clear skies !
Weather prospects are quite good for the coming days. But, not much solar activity, so I spent some time tuning my double stack Ca K configuration.
I remove the EO 394. In fact, it was a source of ghost images. Now, I only have the Astronomik blue filter (as internal ERF), the Alluxa 0.4 nm and the Barr 0.24 nm.
Last Zoom meeting, Pedro encouraged us to use "color visualisation" to tune double (or triple) stack configuration. This is indeed an excellent idea. Thanks Pedro !!
Here is the visualization of banding with the Alluxa filter not tuned :
http://astrosurf.com/viladrich/astro/so ... ding-1.png
And after tuning the Alluxa filter :
http://astrosurf.com/viladrich/astro/so ... ding-2.png
The Ca K disk image :
http://astrosurf.com/viladrich/astro/so ... SI1600.jpg
A zoom on this very small spot with a kind of umbral dot :
http://astrosurf.com/viladrich/astro/so ... ASI290.jpg
Clear skies !
Christian Viladrich
Co-author of "Planetary Astronomy"
http://planetary-astronomy.com/
Editor of "Solar Astronomy"
http://www.astronomiesolaire.com/
Co-author of "Planetary Astronomy"
http://planetary-astronomy.com/
Editor of "Solar Astronomy"
http://www.astronomiesolaire.com/
- marktownley
- Librarian
- Posts: 42545
- Joined: Tue Oct 18, 2011 5:27 pm
- Location: Brierley Hills, UK
- Has thanked: 20813 times
- Been thanked: 10487 times
- Contact:
Re: Double-stack Ca K images 28 March and big thanks to Pedro
Excellent as always Christian! I must give this a try with my filters too.
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!
- pedro
- Way More Fun to Share It!!
- Posts: 12320
- Joined: Sun May 01, 2016 8:26 pm
- Location: Portugal
- Has thanked: 14 times
- Been thanked: 6691 times
- Contact:
Re: Double-stack Ca K images 28 March and big thanks to Pedro
Excellent images and tuning Christian
Using false colour in firecapture is very useful to tune our solar imaging combos
Using false colour in firecapture is very useful to tune our solar imaging combos
Pedro Re'
https://pedroreastrophotography.com/
https://pedroreastrophotography.com/
- DeepSolar64
- Way More Fun to Share It!!
- Posts: 19068
- Joined: Thu Sep 05, 2019 12:19 am
- Location: Lowndesville S.C.
- Has thanked: 17853 times
- Been thanked: 16992 times
Re: Double-stack Ca K images 28 March and big thanks to Pedro
WoW. Here I am pining over a CaK filter and you post this! VERY nice and like Mark's image I can see the spicule layer on the limb.
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
Sky-Watcher AZGTI Alt-Az GoTo mount
Cameras: ZWO ASI178MM, PGR Grasshopper, PGR Flea
Lunt, Coronado, TeleVue, Orion and Meade eyepieces
Visual Observer
" Way more fun to see it! "
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
Sky-Watcher AZGTI Alt-Az GoTo mount
Cameras: ZWO ASI178MM, PGR Grasshopper, PGR Flea
Lunt, Coronado, TeleVue, Orion and Meade eyepieces
Visual Observer
" Way more fun to see it! "
- Montana
- Librarian
- Posts: 34722
- Joined: Mon Oct 17, 2011 5:25 pm
- Location: Cheshire, UK
- Has thanked: 17974 times
- Been thanked: 8906 times
Re: Double-stack Ca K images 28 March and big thanks to Pedro
Wow!!! these are tremendous
I must try out the false colour too, I could do with some sunshine first though
Alexandra
I must try out the false colour too, I could do with some sunshine first though
Alexandra
- eroel
- Way More Fun to Share It!!
- Posts: 9444
- Joined: Mon Dec 19, 2011 10:45 pm
- Location: México D.F.
- Been thanked: 4980 times
Re: Double-stack Ca K images 28 March and big thanks to Pedro
Christian:
Excellent images.
Thanks for the info.
Eric.
Excellent images.
Thanks for the info.
Eric.
- Bob Yoesle
- Almost There...
- Posts: 996
- Joined: Thu Mar 08, 2012 7:24 pm
- Has thanked: 541 times
- Been thanked: 811 times
Re: Double-stack Ca K images 28 March and big thanks to Pedro
Very nice results Christian, and you likely got shortened exposures by removing the K line filter.
Would someone please remind me of the "false color" process used in FC? Thanks
Would someone please remind me of the "false color" process used in FC? Thanks
Diagonally parked in a parallel universe.
Curiosity is the father of knowledge; uncertainty is the mother of wisdom.
Dark-Sky Defenders
Goldendale Observatory
Curiosity is the father of knowledge; uncertainty is the mother of wisdom.
Dark-Sky Defenders
Goldendale Observatory
- MAURITS
- Way More Fun to Share It!!
- Posts: 8615
- Joined: Tue Nov 27, 2018 4:37 pm
- Location: Belgium
- Has thanked: 2464 times
- Been thanked: 4880 times
- Contact:
-
- Way More Fun to Share It!!
- Posts: 2161
- Joined: Sun Jun 14, 2015 4:46 pm
- Location: France
- Has thanked: 1 time
- Been thanked: 2725 times
- Contact:
Re: Double-stack Ca K images 28 March and big thanks to Pedro
Thanks to all !!
Bob, in fact I removed the EO394 nm filter. For some reasons, in this configuration ghost images are created by this filter. On the other hand, ghost images are pushed away from the optical axis when I use the Ca K on the 300 mm solar Newtonian. Different configurations different results...
I think the gain in transmission is about 10 to 15%.
Bob, in fact I removed the EO394 nm filter. For some reasons, in this configuration ghost images are created by this filter. On the other hand, ghost images are pushed away from the optical axis when I use the Ca K on the 300 mm solar Newtonian. Different configurations different results...
I think the gain in transmission is about 10 to 15%.
Christian Viladrich
Co-author of "Planetary Astronomy"
http://planetary-astronomy.com/
Editor of "Solar Astronomy"
http://www.astronomiesolaire.com/
Co-author of "Planetary Astronomy"
http://planetary-astronomy.com/
Editor of "Solar Astronomy"
http://www.astronomiesolaire.com/
- pedro
- Way More Fun to Share It!!
- Posts: 12320
- Joined: Sun May 01, 2016 8:26 pm
- Location: Portugal
- Has thanked: 14 times
- Been thanked: 6691 times
- Contact:
Re: Double-stack Ca K images 28 March and big thanks to Pedro
Hi Bob
Here are two examples of the false colour image in FC. best regards
Here are two examples of the false colour image in FC. best regards
- Attachments
-
- firecapture_20170524-16.jpg (1.35 MiB) Viewed 312 times
-
- firecapture_20170524-13.jpg (913.44 KiB) Viewed 312 times
Pedro Re'
https://pedroreastrophotography.com/
https://pedroreastrophotography.com/
- Bob Yoesle
- Almost There...
- Posts: 996
- Joined: Thu Mar 08, 2012 7:24 pm
- Has thanked: 541 times
- Been thanked: 811 times
Re: Double-stack Ca K images 28 March and big thanks to Pedro
Thanks Pedro !-)
Diagonally parked in a parallel universe.
Curiosity is the father of knowledge; uncertainty is the mother of wisdom.
Dark-Sky Defenders
Goldendale Observatory
Curiosity is the father of knowledge; uncertainty is the mother of wisdom.
Dark-Sky Defenders
Goldendale Observatory
- Merlin66
- Librarian
- Posts: 3972
- Joined: Tue Dec 13, 2011 1:23 pm
- Location: Junortoun, Australia
- Has thanked: 174 times
- Been thanked: 619 times
- Contact:
Re: Double-stack Ca K images 28 March and big thanks to Pedro
Help me....
How do you interpret the false colour images??
Ahhhhhh - got it!!!
How do you interpret the false colour images??
Ahhhhhh - got it!!!
"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
https://groups.io/g/astronomicalspectroscopy
http://astronomicalspectroscopy.com
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer
- AJamesB
- Im an EXPERT!
- Posts: 373
- Joined: Thu Jan 30, 2020 9:21 pm
- Location: Maui, Hawaii
- Has thanked: 1154 times
- Been thanked: 630 times
Re: Double-stack Ca K images 28 March and big thanks to Pedro
Great images, and great detail/resolution on the closeup of the sunspot.
Lunt ls100tha single stacked + hinode solar guider on ioptron cem26 mount
asi178mm
asi294mm
2x, 3x, and 4x telecentrics
0.6x and 0.4x telecompressors
asi178mm
asi294mm
2x, 3x, and 4x telecentrics
0.6x and 0.4x telecompressors