SolarChat!

yltansg

Thanks Alfred, image scale is aprox. f/40 with the imx432. Alluxa ds, very slight tilt on both, maybe 0.5-1°. Did you find a good tilt for your ds filters? [/quote] Thanks, Dennis. For the filter nearest to the telescope - more than 1 degree. The tilting lever of the 3D Skybender is set to max trav...

yltansg

Wow, those are excellent CAK high-resolution images, Dennis!!

I am curious to know - What is the image scale? Alluxa double-stacked? Any tilting?

Looking forward to seeing even better images when the weather gets better.

Alfred

yltansg

Hi Brian,

There are so many details in the FD images. A joy to look at. Great to see those proms. Did you get those CAK proms by just using the Lunt B1800CaK module? Any ERF?

Alfred

yltansg

Nice collection of lovely images. Congrats on your new CAK diagonal.

Alfred

yltansg

Great high-resolution HA images. They all have smooth flowing texture, very fluid looking. Is it something you do in post-processing?

Enjoyed them. Thank you for sharing.

Alfred

yltansg

Thank you, Dennis, Franco, Wayne and Alexandra for your feedback and kind comments. Here is another image of AR13628 taken at 9:20am local time (0120UTC): https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgtnONU-lV89GFiQ1XUDRYS40Eot3ogDy6dDWktAd4wYXEp5fZKJU0Ua717OoW3R-y0nzdQwSb_djd55tDdAv0K...

yltansg

Hi Arne,

Excellent full-disk images in 3 bands. You have expertly teased out the proms!!

Thank you for sharing.

Alfred

yltansg

Those are great images, Dennis. I can see the details, especially in the first image. Looks on-band to me. Your posting has encouraged me to get out my H-Alpha gear too. Thank you for sharing.

Alfred

yltansg

Conditions were testing to say the least on Saturday, we had Storm Kathleen causing havoc here, with gale force winds from the south not only shaking the scope about, but also bringing up a thick soup of cloud, that when it briefly broke revealed at best a milky sky with high cloud and Saharan dust...

yltansg

These are excellent Alfred, even better viewed full size, I prefer number 1, it is lighter - but that may be down to my monitor. I was imaging the same spot yesterday too, what time UT is this? Thank you, Mark for your feedback. Seeing could have been better. I could see the clouds were coming in, ...

yltansg

7 Apr 24. This morning, I had a 15 minute session with a 6CR with re-spaced objective lens optimised for CAK imaging. The optical train - a Calcium Solar filter system comprising 2 Alluxa 0.14nm Ca K filters in a 3D Skybender, Camera - IMX290 Mars-M USB3.0 Mono Camera. Camera settings - Shutter=8.16...

yltansg

Maybe Alexandra or Christian may have an answer for us. Hi James, A friend of mine suggested that it may be an Incendiary penumbral filament like the one shown below. https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhxkA4JoPkpRQOfQ21i5ryO4I6GmBDJu_sI7TWLwqU_YYT7ZOo-U6jOBx2CXej_QZJYy_MH9mw...

yltansg

These are very impressive. Nice to see your set up with the Solar protective shield. Hi Peter, Thank you for your kind comments. The shield is supposed to prevent the 6CR tube from heating up. Recently I received a comment that it may cause the heat build-up within the tube to be trapped in it inst...

yltansg

Maybe Alexandra or Christian may have an answer for us. Dear James, It would be great to know more about these bright spots/lines in the fibrils getting into the penumbra. That would enhance our understanding of our observations. I am grateful for the resolution improvement resulting from the 6CR r...

yltansg

I see white dots in the penumbra of the first additional picture. I wonder what they are? Hi James, Besides imaging AR3615 I was also observing AR3614 from 8:08 to 8:37. The "white dots" starting forming before 8:14 am and became more pronounced at 8:18am and there went away at 8:37am. I ...

yltansg

Thank you, James, Mark, OlegLviv, Franco, Arnedanielsen, Xinghai, Eric, Dennis, Kevin, Cybermayberry, Alexandra, Pedro, Warren, Brian, Wayne, Maurits for your kind comments. I have many fair images from the same session. I have added 2 more images for your viewing pleasure. AR3614: https://blogger.g...

yltansg

Nice but why do you not write your equipment? Dear OlegLviv, Thank you for asking. The equipment used in that session: A 15 year-old 6CR achromat refractor (bought used) with re-spaced objective lens optimised for CAK imaging. It is fitted with a Calcium Solar filter system comprising 2 Alluxa 0.14...

yltansg

Excellent results Alfred. Just a matter of time with the perfect tuning. Hi Dennis, I wish there is a inexpensive way to measuring on-band tilt instead of tilting by trial-and-error :D Alfred There is Alfred and you can do it already... When the image is on band it has the highest contrast, ie the ...

yltansg

Dear Mark,

Enjoyed both images. What majestic proms!!

Have a great holiday in Italy.

Alfred

yltansg

Hi Dennis,

Both are great CAK images!! Looking forward to see even greater ones when better weather arrives.

Alfred

yltansg

Dennis wrote: ↑Sun Mar 24, 2024 6:02 pm Excellent results Alfred. Just a matter of time with the perfect tuning.

Hi Dennis,

I wish there is a inexpensive way to measuring on-band tilt instead of tilting by trial-and-error

Alfred

yltansg

KMH wrote: ↑Sun Mar 24, 2024 7:14 pm That second one looks really good!

Kevin

Dear Kevin,

Thanks for your kind comments. At this image scale, I can replicate great results without tilting.

Alfred

yltansg

ffellah wrote: ↑Sun Mar 24, 2024 11:16 am Great image of AR3615, Alfred. You have put a lot of work in tuning your setup and the results show it.

Franco

Thanks, Franco. I am still learning, through trial-and-error and advice offered by friends how to optimise the performance by the tilting of the filters.

Alfred

yltansg

Nice but why do you not write your equipment? Dear OlegLviv, Thank you for asking. The equipment used in that session: A 15 year-old 6CR achromat refractor (bought used) with re-spaced objective lens optimised for CAK imaging. It is fitted with a Calcium Solar filter system comprising 2 Alluxa 0.14...

yltansg

The second cak image has turned out well Alfred. The first one looks like the tilt is completely wrong to me, excessive tilt infact, uneven illumination is the same as when a ha etalon is tilted too much. The cones of light also imply excessive tilt. I have found there is not really much need to me...

yltansg

My CAK setup: https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEigzTmsxvpSARFFiIuIt9L0SCjygc1oQFRACLpckvZDdfib-TZhBZgQWudU0kqO9HwireCgJsmUjDIzRxllz9WkG-jAWKbkKcTwm0QPyMkPjYY8mNTkXNatCaD_ZWeKAbDxuU5JkED1Wn33jFmLc-Ibu1LRSK11sDQqeOgkZ6zZmrtTFuextuTSuN-YllGR/s2560/PXL_20240324_004254006.jpg 23A...

yltansg

Dear Mark, Wow, great images from a 40mm and 60mm telescopes. I can see so much details in the full disk. The proms are a treat. I have never been able to get them. Unlike you, my adjustment for the filter tilt is by trial and error and I don't really understand what I am doing except look for best ...

yltansg

I found another good granulation image in Calcium-K from the same session: https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEizwaw2XvLWBQBn9t4WMWp3VuP62Yn399yWNIWxoOwMeN5L5m5IpCTnb4c-mNXv6RnEibAgjuReG31OG-urv2On7ih5lfFMDXMZt3fFw8spawEPFr2s4EAuXPet2BIen6mqylqYENEliJsMw2k2ltAIuUOw8Fg3KCUMsJz...

yltansg

DeepSolar64 wrote: ↑Wed Mar 13, 2024 9:08 pm
A world apart from the C11!

And it is a much smaller scope. It proves that “ size isn’t everything “.

Thank you, James. It is amazing what is C6R, which I purchased for a bargain is providing me for CAK imaging. It is definitely a cost-effective solution for great CAK images.

Alfred

yltansg

I am still not able to get that "crystal" look. Does anyone know how to get that through post processing? Alfred This is perfect Alfred! I don't think you need to do anything more to it. A world apart from the C11! Hi Mark, I agree with you that the CAK images with the modified C6R and Al...

yltansg

Youre welcome. Yes, i already posted a image, though seeing was best during the h-alpha imaging. The "classic" look of reverse granulation is almost dissapearing then. Tilting was not necessary with this magnification. Once i zoom in more i will need to add some tilt due to the red shifti...

yltansg

Hi, today was the first time good seeing this year, so for me the season is opened finally. I played a bit with the Quark + Lunt 40 combination and with the Ca-k filters. Thanks for looking and have a good day. Dennis Wow, Dennis. Excellent collection. The HA images are fabulous !! CAK images very ...

yltansg

And one final one using single filter tilted in the 3D Skybender: https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjCKcaLkXAUP_mb8D0h_XskGOx7MbIlLjT6mzGW4z_hYVz9qc4bnh7kx-U4WrBNQzwpQ2BPRgQTjiDLPy1peNe2ZmjwiWHTXHyqz6ICmpPU6U4COaw2llTUYhE9OB76HgI1neU1brnTFp295b8FGORpat0XyukBeR_zXw3vaim-xa96W...

yltansg

I found another good granulation image in Calcium-K from the same session: https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEizwaw2XvLWBQBn9t4WMWp3VuP62Yn399yWNIWxoOwMeN5L5m5IpCTnb4c-mNXv6RnEibAgjuReG31OG-urv2On7ih5lfFMDXMZt3fFw8spawEPFr2s4EAuXPet2BIen6mqylqYENEliJsMw2k2ltAIuUOw8Fg3KCUMsJzh...

yltansg

Alfred, Did you have the Skybender printed yourself? If so, could you share where you got the drawings from? Thanks! Kevin [/quote] Dear Kevin, I don't have the drawing for the 3D printing. It was printed for me by the person who sold me the whole setup. He told me that he is not selling the 3D sky...

yltansg

Wow!! Alfred, if I had video like that I would be saying I had fantastic seeing, this stability happens maybe once per year here. I guess this is why the UK folk try and try and never get great results. Your classification of poor seeing truly is fabulous seeing to us :( You are very blessed Alfred...

yltansg

Wow!! I would be over the moon with any of these images :bow :hamster: :bow Alexandra Dear Alexandra, Thank you for your kind words. The seeing was fair to poor, really. I have learnt over and over again that, I should go ahead and record the video even when it looks terrible because of the seeing ...

yltansg

rigel123 wrote: ↑Wed Mar 13, 2024 2:09 am These are gorgeous Alfred!

Thank you, Warren. I was pleasantly surprised because the video was so unstable.

Alfred

yltansg

Excellent results Alfred, SPOD material! The Skybender did a good job there. Now to do the same with the second filter. Thank you, Dennis. I must always remember to thank you again for the many tips you have generously given me :bow Double-stacking is next after I have made some skybender improveme...

yltansg

These are excellent Alfred! By far your best yet! Critical tuning of the filters makes all the difference, and these images show it. Remember before double stacking the two filters you were not critical tuning them. For best results double stacking, the filter that requires the least tilt to be on ...

yltansg

Hi Alfred, Very good images. I have always wondered about your total isolation of the tube and everything else and I think that is not a good idea. The tube inside will become hotter and hotter as the heat builds up inside and the temperature inside for sure is much higher then ambient temperature....

yltansg

6 March 2024. Tiltable 3D Skybender made its debut with a single Alluxa Ca K 0.14nm filter mounted on a Celestron 6CR achromat. https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgW8en_HZQ3vw_wxQg-7UVi46si3bVr_680ew98rPcyL-nnANYAV9LDupQqBz7UlneVOE1IBXgaP-vy8inBV_-vhaN4sIy6n84KSlulfmU8y14Q1uQ...

yltansg

Hi Paul,

That is a very nice high-resolution HA image!! It makes me want to take out my HA gears

Alfred

yltansg

Beautiful full disks. Thanks, Richard.

Alfred

yltansg

Thanks for sharing the images, James. I caught some videos on AR13590 with students this morning too

Alfred

yltansg

Hi Michael,

Great job on producing such excellent HA and WL images!! I have tried but not been able to get such WL images. What filter, optical chain and camera did you use?

Alfred

yltansg

Hi Franco,

An excellent capture indeed. Thanks.

Alfred

yltansg

Hi Warren,

It's a great way to present the progression. I must try to do this.

Thanks.

Alfred

yltansg

Hi Warren,

It's a great way to present the progression. I must try to do this.

Thanks.

Alfred

yltansg

Hi Rainer,

Wow!! beautiful setup!! Thank you sharing.

Alfred

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