Eroel,
Fantastic results, well presented!
Well done.
Search found 3972 matches
- Sun Feb 06, 2022 2:56 am
- Forum: This is SolarChat !!
- Topic: Sol from the 5th of February 2022.
- Replies: 11
- Views: 459
- Sat Feb 05, 2022 11:44 pm
- Forum: This is SolarChat !!
- Topic: "Sparkling diamonds" CaK on the 6th Feb 2022
- Replies: 10
- Views: 491
"Sparkling diamonds" CaK on the 6th Feb 2022
The solar disk is still dominated by the central active areas, AR2939 and AR2940. Over in the north west the last remnants of AR 2938/36 are disappearing and the latest AR2941 is coming into view in the north east. There's a small un-named AR down in the south west; a neat couple of small spots surr...
- Sat Feb 05, 2022 6:17 am
- Forum: Commercial Solar Filters/Cameras/Hardware
- Topic: Old PST safety
- Replies: 11
- Views: 1356
Re: Old PST safety
I agree with Mark, just enjoy what you have, and when you’re ready to move along the learning curve you can consider various options for the future. Unfortunately all are expensive!!!
- Sat Feb 05, 2022 4:54 am
- Forum: This is SolarChat !!
- Topic: WL Active Regions 05-02-22 ,Solar Newtonian
- Replies: 13
- Views: 537
Re: WL Active Regions 05-02-22 ,Solar Newtonian
Martin,
You got some good results there, notwithstanding the weather issues.
Well done mate.
You got some good results there, notwithstanding the weather issues.
Well done mate.
- Fri Feb 04, 2022 10:55 pm
- Forum: This is SolarChat !!
- Topic: WL activity 5th Feb 2022
- Replies: 6
- Views: 390
WL activity 5th Feb 2022
Plenty of activity visible -time to get those Baader film filters into action! AR 2936/38 about to leave us in the west, AR2939 dominates the central area with the smattering of small spots (AR2940) just above. The new AR 2941 coming in from the eastern limb is showing great promise! I think it's fa...
- Fri Feb 04, 2022 10:40 am
- Forum: This is SolarChat !!
- Topic: CaK activity 4th Feb 2022
- Replies: 12
- Views: 449
Re: CaK activity 4th Feb 2022
Thanks everyone, I appreciate your support.
- Fri Feb 04, 2022 12:33 am
- Forum: Solar Scope Modifications
- Topic: Applying a slight tilt to filters?
- Replies: 3
- Views: 1796
Applying a slight tilt to filters?
Anyone found a solution to applying a slight tilt (ghost removal) to filters? I have a 2" filter in a 2" focuser which needs a tilt...... So far I've been "cross threading" the filter and applying some BluTac to hold in in place. Seems to do the job, but doesn't look too safe. An...
- Fri Feb 04, 2022 12:29 am
- Forum: This is SolarChat !!
- Topic: CaK activity 4th Feb 2022
- Replies: 12
- Views: 449
CaK activity 4th Feb 2022
The active areas, showing very well formed sunspots, AR2936/38/39 and 2940 make a very nice layout. There's another large unnamed AR just coming into view in the north east - multiple spots... I used both the MiniSHG (see the proms) and the DIY Cak Filter on the Custom Vixen 90 (for the detail) Enjo...
- Thu Feb 03, 2022 7:50 am
- Forum: Commercial Solar Filters/Cameras/Hardware
- Topic: Experimenting calcium imaging with small refractors
- Replies: 53
- Views: 21489
Re: Experimenting calcium imaging with small refractors
What ever you consider, the f10 requirement I think is mandatory for any of the CaK filters.
- Wed Feb 02, 2022 8:44 am
- Forum: Commercial Solar Filters/Cameras/Hardware
- Topic: Experimenting calcium imaging with small refractors
- Replies: 53
- Views: 21489
Re: Experimenting calcium imaging with small refractors
Stephen,
I regularly use an ED80 stopped down to 60mm to give an f10 beam to the CaK filter.
Check out some of my results on the forum.
It certainly seems to work well for me.
My other alternative is my Custom Vixen 90/ 1000 which also works very well in CaK
I regularly use an ED80 stopped down to 60mm to give an f10 beam to the CaK filter.
Check out some of my results on the forum.
It certainly seems to work well for me.
My other alternative is my Custom Vixen 90/ 1000 which also works very well in CaK
- Tue Feb 01, 2022 3:54 am
- Forum: This is SolarChat !!
- Topic: Cheapest solar Ha solution
- Replies: 59
- Views: 1936
Re: Cheapest solar Ha solution
The Lunt 40mm Ha scope looks like offering an interesting introduction to Ha.
https://luntsolarsystems.com/product/lu ... telescope/
https://luntsolarsystems.com/product/lu ... telescope/
- Mon Jan 31, 2022 3:40 am
- Forum: This is SolarChat !!
- Topic: Walkthrough the CaK wavelength violet to red
- Replies: 13
- Views: 593
Re: Walkthrough the CaK wavelength violet to red
Peter,
You are correct. I could have taken many more images....next time.
I just wanted to show the relative changes between the K3, K2 and K1 regions of the Ca II K line.
Sorry, I had overlooked your earlier work.
You are correct. I could have taken many more images....next time.
I just wanted to show the relative changes between the K3, K2 and K1 regions of the Ca II K line.
Sorry, I had overlooked your earlier work.
- Mon Jan 31, 2022 3:18 am
- Forum: Commercial Solar Filters/Cameras/Hardware
- Topic: Antlia 1.25" Herschel wedge with 3nm CaK filter
- Replies: 12
- Views: 2913
Antlia 1.25" Herschel wedge with 3nm CaK filter
Interesting combo of a wedge plus a 3nm CaK filter.
http://www.antliafilter.com/pd.jsp?id=106
http://www.antliafilter.com/pd.jsp?id=106
- Sun Jan 30, 2022 12:05 pm
- Forum: Solar Scope Modifications
- Topic: Double Stack Lunt CaK filter
- Replies: 22
- Views: 5127
Re: Double Stack Lunt CaK filter
Thanks for that.
The image was then a stack of 40 x 10ms exposures =0.4 sec? gain=314
(The log file only shows 344 frames???)
The image was then a stack of 40 x 10ms exposures =0.4 sec? gain=314
(The log file only shows 344 frames???)
- Sun Jan 30, 2022 4:23 am
- Forum: Solar Radio, Magnetometry and Spectroscopy
- Topic: Found the next challenge! CN wavelength
- Replies: 15
- Views: 1782
Re: Found the next challenge! CN wavelength
Peter,
Thanks.
I'd already found the Sheeley references.
There are very few CN band images around for comparison.
Thanks.
I'd already found the Sheeley references.
There are very few CN band images around for comparison.
- Sat Jan 29, 2022 11:49 am
- Forum: Solar Scope Modifications
- Topic: Double Stack Lunt CaK filter
- Replies: 22
- Views: 5127
Re: Double Stack Lunt CaK filter
I use a 2" Baader Blue CCD filter (https://www.baader-planetarium.com/en/b ... blue).html ) with a 2" Astronomik L1 UV-IR filter as a ERF on the DIY CaK filter setup.
Can we get back on track and limit this discussion to Lunt filters and double stacking.
Thanks
Can we get back on track and limit this discussion to Lunt filters and double stacking.
Thanks
- Sat Jan 29, 2022 5:34 am
- Forum: Solar Reference Library
- Topic: Prom visibility across the CaK bandwidth
- Replies: 7
- Views: 2004
Prom visibility across the CaK bandwidth
The GIF shows the Proms as we move from the outer K1v (blue) wing, through the K2v then the core at K3 and out into the red wing. (There are some compression artefacts due to the reduction in the file size :( ) The distance from K1v to K1r is approx 1A The individual images (unprocessed) show the fi...
- Sat Jan 29, 2022 5:34 am
- Forum: This is SolarChat !!
- Topic: Prom visibility across the CaK bandwidth
- Replies: 7
- Views: 402
Prom visibility across the CaK bandwidth
The GIF shows the Proms as we move from the outer K1v (blue) wing, through the K2v then the core at K3 and out into the red wing. (There are some compression artefacts due to the reduction in the file size :( ) The distance from K1v to K1r is approx 1A The individual images (unprocessed) show the fi...
- Sat Jan 29, 2022 4:16 am
- Forum: Solar Radio, Magnetometry and Spectroscopy
- Topic: Found the next challenge! CN wavelength
- Replies: 15
- Views: 1782
Re: Found the next challenge! CN wavelength
Peter,
Thanks for the additional references.
The use of an old Lyot filter shows similarities to the narrowband MiniSHG results.
Thanks for the additional references.
The use of an old Lyot filter shows similarities to the narrowband MiniSHG results.
- Sat Jan 29, 2022 1:30 am
- Forum: Solar Scope Modifications
- Topic: Double Stack Lunt CaK filter
- Replies: 22
- Views: 5127
Re: Double Stack Lunt CaK filter
Oleg,
The Quark offering is a CaH filter, not CaK and is 5A bandwidth - double that of the Lunt.
https://www.teleskop-express.de/shop/pr ... ilter.html
The Quark offering is a CaH filter, not CaK and is 5A bandwidth - double that of the Lunt.
https://www.teleskop-express.de/shop/pr ... ilter.html
- Fri Jan 28, 2022 7:36 pm
- Forum: This is SolarChat !!
- Topic: Walkthrough the CaK wavelength violet to red
- Replies: 13
- Views: 593
Re: Walkthrough the CaK wavelength violet to red
Alexandra, All the images were obtained from one MiniSHG 18 sec 16 bit SER video. Matt and I have been playing with the INTI software to make it more robust in the selection of target lines. This allows more precise wavelength selection across the target line. I'm also preparing a similar animation ...
- Fri Jan 28, 2022 1:39 am
- Forum: This is SolarChat !!
- Topic: Walkthrough the CaK wavelength violet to red
- Replies: 13
- Views: 593
Re: Walkthrough the CaK wavelength violet to red
Thanks for the feedback!
I will process a similar series but showing the Proms in action and where the brightest proms can be found.
I will process a similar series but showing the Proms in action and where the brightest proms can be found.
- Thu Jan 27, 2022 7:29 pm
- Forum: This is SolarChat !!
- Topic: Walkthrough the CaK wavelength violet to red
- Replies: 13
- Views: 593
Walkthrough the CaK wavelength violet to red
I've prepared a GIF which walks through the CaK wavelength at a resolution of 0.18A. Starts way out in the K1violet wing (1A), creeps in until the K2v region, just outside the core (0.2 offset) then the core CWL and then the same points moving outwards into the red wing. I'm looking at ways and mean...
- Thu Jan 27, 2022 6:52 pm
- Forum: Solar Scope Modifications
- Topic: Double Stack Lunt CaK filter
- Replies: 22
- Views: 5127
Re: Double Stack Lunt CaK filter
I would be interested in seeing a photo of the filter setup. Also, if you could, at the next opportunity, collect an image in DS mode targeting any proms, recording the scope/ camera/ exposure/ stack and any other parameters. With the SHG I can map the solar surface and the visibility of the proms a...
- Thu Jan 27, 2022 3:29 am
- Forum: Solar Scope Modifications
- Topic: Double Stack Lunt CaK filter
- Replies: 22
- Views: 5127
Re: Double Stack Lunt CaK filter
OK.
Do you use two B1800 filters? If so how do you join and align them.
Do you remove any of the secondary filter elements?
Photos?
Do you use two B1800 filters? If so how do you join and align them.
Do you remove any of the secondary filter elements?
Photos?
- Wed Jan 26, 2022 10:22 pm
- Forum: Solar Scope Modifications
- Topic: Double Stack Lunt CaK filter
- Replies: 22
- Views: 5127
Double Stack Lunt CaK filter
Has anyone tried double stacking a Lunt CaK filter to reduce the bandwidth to around 1.2A?
(Using an old PST yellow filter doesn’t count - only current Lunt filters)
(Using an old PST yellow filter doesn’t count - only current Lunt filters)
- Tue Jan 25, 2022 3:16 pm
- Forum: This is SolarChat !!
- Topic: CaK activity 25Jan 2022
- Replies: 11
- Views: 410
Re: CaK activity 25Jan 2022
Thanks to everyone, appreciate the feedback!
Going back to the 90mm f11 for the CaK gives better resolution (in my very average conditions) but the MiniSHG is much quicker for the run of the mill full disks and proms albeit at a smaller scale.
Going back to the 90mm f11 for the CaK gives better resolution (in my very average conditions) but the MiniSHG is much quicker for the run of the mill full disks and proms albeit at a smaller scale.
- Tue Jan 25, 2022 4:49 am
- Forum: This is SolarChat !!
- Topic: Feedback requested from Lunt/ Quark CaK/H users
- Replies: 26
- Views: 1295
Re: Feedback requested from Lunt/ Quark CaK/H users
Franco,
Thanks for that! Never seen a CaH prom before....
I assume this was a DayStar CaH Quark?
What acquisition software?
A little surprised to see gain=2121
Thanks for that! Never seen a CaH prom before....
I assume this was a DayStar CaH Quark?
What acquisition software?
A little surprised to see gain=2121
- Tue Jan 25, 2022 4:41 am
- Forum: This is SolarChat !!
- Topic: CaK activity 25Jan 2022
- Replies: 11
- Views: 410
CaK activity 25Jan 2022
Using the Vixen 90/1000 with the DIY CaK filter (1A bandwidth). Some issues with the internal tilt need to be addressed. Prom Images from stacks of 200 from 500 slightly sharpened. Exposures were typically 40-60ms, a total of 10sec. :shock: (For comparison the previous CaK I showed from the MiniSHG ...
- Mon Jan 24, 2022 6:25 pm
- Forum: This is SolarChat !!
- Topic: Sun in Ha and CaK Jan 20th 2022
- Replies: 16
- Views: 574
Re: Sun in Ha and CaK Jan 20th 2022
Ella,
A couple of comments on your CaK proms.
I'd try 16 bit SER setting for the ASI 178MM camera
FireCapture V2.7 (latest beta) I find is much better than V2.6
A couple of comments on your CaK proms.
I'd try 16 bit SER setting for the ASI 178MM camera
FireCapture V2.7 (latest beta) I find is much better than V2.6
- Mon Jan 24, 2022 3:47 am
- Forum: This is SolarChat !!
- Topic: Feedback requested from Lunt/ Quark CaK/H users
- Replies: 26
- Views: 1295
Re: Feedback requested from Lunt/ Quark CaK/H users
Bob, James, et al,
Very interesting discussions on non standard Lunt issues.
I’d like to keep the topic on track to provide some useful data to Lunt users who wish to record the CaK proms.
I thank everyone for their contribution so far.
I haven’t received any positive response from Quark users……
Very interesting discussions on non standard Lunt issues.
I’d like to keep the topic on track to provide some useful data to Lunt users who wish to record the CaK proms.
I thank everyone for their contribution so far.
I haven’t received any positive response from Quark users……
- Sun Jan 23, 2022 9:41 pm
- Forum: This is SolarChat !!
- Topic: Sol 19-1-22 Ha & Cak
- Replies: 11
- Views: 393
Re: Sol 19-1-22 Ha & Cak
Steve,
Thanks for the data.
I use Weiller's Corono, does a great job.
http://sweiller.free.fr/Softwares/Corono/corono.html
Thanks for the data.
I use Weiller's Corono, does a great job.
http://sweiller.free.fr/Softwares/Corono/corono.html
- Thu Jan 20, 2022 11:43 pm
- Forum: This is SolarChat !!
- Topic: Feedback requested from Lunt/ Quark CaK/H users
- Replies: 26
- Views: 1295
Re: Feedback requested from Lunt/ Quark CaK/H users
Stephen,
Very good mate!
Can you confirm the camera - Grasshopper seems to cover many - Express, IMX174, IMX252??
What typical settings - exposure , gain?
Did you stack images for the final ????
This would help others understand the challenge.
Thanks.
Very good mate!
Can you confirm the camera - Grasshopper seems to cover many - Express, IMX174, IMX252??
What typical settings - exposure , gain?
Did you stack images for the final ????
This would help others understand the challenge.
Thanks.
- Tue Jan 18, 2022 10:24 pm
- Forum: This is SolarChat !!
- Topic: Feedback requested from Lunt/ Quark CaK/H users
- Replies: 26
- Views: 1295
Feedback requested from Lunt/ Quark CaK/H users
I'm trying to determine the key factors in being able to image CaK proms with the Lunt CaK/ Quark CaH filter. I have received some data already but would like to extend the data as far as possible. If you've had success/ failure to image CaK proms please let me know. I'll share the outcome results. ...
- Sun Jan 16, 2022 7:58 am
- Forum: Solar Radio, Magnetometry and Spectroscopy
- Topic: Found the next challenge! CN wavelength
- Replies: 15
- Views: 1782
Re: Found the next challenge! CN wavelength
The professionals say the CN reflects the active magnetic regions and hence different from the other wavelengths.
- Sun Jan 16, 2022 4:53 am
- Forum: Solar Radio, Magnetometry and Spectroscopy
- Topic: Found the next challenge! CN wavelength
- Replies: 15
- Views: 1782
Re: Found the next challenge! CN wavelength
Managed to get a better image in Mg(b2) which allowed comparison with a Ca II K image and my latest challenge the CN molecular line "head" at 3883A. It looks like the Mg is very close to white light (photosphere) then the CN and finally the CaK in the lower chromosphere. Note the filaments...
- Sat Jan 15, 2022 4:39 am
- Forum: Solar Radio, Magnetometry and Spectroscopy
- Topic: Found the next challenge! CN wavelength
- Replies: 15
- Views: 1782
Found the next challenge! CN wavelength
While researching on magnetometers (June 1972 issue of Sky&Telescope) I found the "Babinet compensator" they used cost thousands $$$$$$. Andre Rondi has achieved creditable results with basic 1/4 wave plates on his SHG, which I'm sure cost MUCH less!! http://www.astrosurf.com/rondi/obs...
- Sat Jan 15, 2022 4:01 am
- Forum: This is SolarChat !!
- Topic: Sol 3-1-22 Ha & Cak
- Replies: 14
- Views: 571
Re: Sol 3-1-22 Ha & Cak
Steve, I appreciate you taking the time to answer my request. I already know that the relative resolutions between the Lunt CaK and the MiniSHG can impact on the recording of CaK proms. It looks like your total exposure was around 17.3ms x 100 = 1.73sec plus the sharpening etc. with a 120mm aperture...
- Sat Jan 15, 2022 3:26 am
- Forum: This is SolarChat !!
- Topic: Full disc 14-01-2022
- Replies: 11
- Views: 447
Re: Full disc 14-01-2022
Great record of the current activity well presented!
- Fri Jan 14, 2022 10:43 am
- Forum: This is SolarChat !!
- Topic: Solar activity 13th jan 2022 - Mg (b2)
- Replies: 9
- Views: 382
Re: Solar activity 13th jan 2022 - Mg (b2)
I'm not aware of any other Mg (b2) filters. Daystar seems to be the only one.
- Fri Jan 14, 2022 4:42 am
- Forum: This is SolarChat !!
- Topic: Sol 3-1-22 Ha & Cak
- Replies: 14
- Views: 571
Re: Sol 3-1-22 Ha & Cak
Steve,
PM sent.
Need your help.
PM sent.
Need your help.
- Fri Jan 14, 2022 12:48 am
- Forum: This is SolarChat !!
- Topic: Solar activity 13th jan 2022 - Mg (b2)
- Replies: 9
- Views: 382
Re: Solar activity 13th jan 2022 - Mg (b2)
Thanks to everyone in recognising the image as a "SPOD" -amazing, and humbling..... The Mg triplet and the Na D1/2 doublet are representative of the very low chromosphere, bordering on the top of the photosphere. Based on the professional reviews, this would then infer the images should be...
- Thu Jan 13, 2022 10:18 pm
- Forum: This is SolarChat !!
- Topic: Solar Activity Mg (b2 and b1) 9th Jan 2022
- Replies: 20
- Views: 727
Re: Solar Activity Mg (b2 and b1) 9th Jan 2022
Doug,
I agree, but that assumes the initial image is generated from the absorption line you think you have targeted.
There’s no way with INTI to be 100% sure of the line being used.
With Wah’s SLIM you have the definite option of selecting where the reference is positioned.
I agree, but that assumes the initial image is generated from the absorption line you think you have targeted.
There’s no way with INTI to be 100% sure of the line being used.
With Wah’s SLIM you have the definite option of selecting where the reference is positioned.
- Thu Jan 13, 2022 1:30 am
- Forum: SPoD Archive
- Topic: Solar activity 13th jan 2022 - Mg (b2)
- Replies: 4
- Views: 455
Solar activity 13th jan 2022 - Mg (b2)
Still hampered by strong winds but managed to get a reasonable MiniSHG image in the wavelength of Mg (b2)
All the current active areas and regions of faculae visible - AR 2924/5/6/7/8
plus these a bit of faculae up in the north east....
All the current active areas and regions of faculae visible - AR 2924/5/6/7/8
plus these a bit of faculae up in the north east....
- Thu Jan 13, 2022 1:30 am
- Forum: This is SolarChat !!
- Topic: Solar activity 13th jan 2022 - Mg (b2)
- Replies: 9
- Views: 382
Solar activity 13th jan 2022 - Mg (b2)
Still hampered by strong winds but managed to get a reasonable MiniSHG image in the wavelength of Mg (b2)
All the current active areas and regions of faculae visible - AR 2924/5/6/7/8
plus these a bit of faculae up in the north east....
All the current active areas and regions of faculae visible - AR 2924/5/6/7/8
plus these a bit of faculae up in the north east....
- Wed Jan 12, 2022 8:00 am
- Forum: Solar Radio, Magnetometry and Spectroscopy
- Topic: CaH and continuum SHG images (resolution upgrade)
- Replies: 5
- Views: 956
Re: CaH and continuum SHG images (resolution upgrade)
Doug,
Thanks for reminding us of the data that can be collected from each SER video.
Again one of the strengths of the SHG.
Thanks for reminding us of the data that can be collected from each SER video.
Again one of the strengths of the SHG.
- Tue Jan 11, 2022 11:54 pm
- Forum: Commercial Solar Filters/Cameras/Hardware
- Topic: Reliable USB3 5 Mtr cable???
- Replies: 17
- Views: 2274
Re: Reliable USB3 5 Mtr cable???
Simon,
I hear you....
All I can say is the CableCreation active 5 mtr cable outlasted all the others I tried and died a year later.
I hear you....
All I can say is the CableCreation active 5 mtr cable outlasted all the others I tried and died a year later.
- Tue Jan 11, 2022 5:27 am
- Forum: This is SolarChat !!
- Topic: Ca II K3 Prominences - 3rd Jan 2022
- Replies: 20
- Views: 751
Re: Ca II K3 Prominences - 3rd Jan 2022
viewtopic.php?f=4&t=34393
Missed this one by Steve!
In the full res CaK image he shows the same proms......
Missed this one by Steve!
In the full res CaK image he shows the same proms......
- Tue Jan 11, 2022 5:11 am
- Forum: This is SolarChat !!
- Topic: Ca II K3 Prominences - 3rd Jan 2022
- Replies: 20
- Views: 751
Re: Ca II K3 Prominences - 3rd Jan 2022
I'd be interested to see any CaK images taken around the same time on the 3rd Jan for comparison......
- Tue Jan 11, 2022 2:47 am
- Forum: This is SolarChat !!
- Topic: Solar Activity Mg (b2 and b1) 9th Jan 2022
- Replies: 20
- Views: 727
Re: Solar Activity Mg (b2 and b1) 9th Jan 2022
Kevin, Depending on your setup it can take between 120 sec and 9 sec. If you just let the solar disk drift across the slit it's 120 sec. If you use the slew buttons on your mount (ie x2 or x3 sidereal) you can get down to 9sec. The other issue is obtaining sufficient frames during the scan video. Th...