CaK, 23022019. Double plus triple.

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bart1805
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CaK, 23022019. Double plus triple.

Post by bart1805 » Sat Feb 23, 2019 9:05 pm

Had another try at CaK today.
100mm ED f/9_Lunt Filters_one Baader K-Line_two PST#1 filters_ASI290mm.

Image

Tried to image at about f/14, but miscalculated (again...). Here is the image at about f/12.

Image

Tried triplestacking, with the Lunt B600 in the imagetrain. At first I thought there was no improvement. But processed it again, curious what you think about it.

Image

Thanks for watching! Bart.
Last edited by bart1805 on Sun Feb 24, 2019 2:56 pm, edited 2 times in total.



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Re: CaK, 27022019

Post by MAURITS » Sat Feb 23, 2019 9:19 pm

Nice to see Bart ...


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Re: CaK, 27022019. Double plus triple.

Post by David_The_Bears_Fan » Sat Feb 23, 2019 10:32 pm

Nice images Bart


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Re: CaK, 27022019. Double plus triple.

Post by george9 » Sun Feb 24, 2019 3:02 am

All look good, Bart. Does the third one have a little more gradation of brightnesses in the active region compared to the other two? The first definitely has the least. The second is similar to the third in that respect, but may be a little more washed out in the rest of the disk (non-AR). So that would favor the third overall. But may depend on focus, processing, image scale, etc.

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Re: CaK, 27022019. Double plus triple.

Post by marktownley » Sun Feb 24, 2019 7:26 am

The effect is subtle Bart. For me it was a much bigger improvement going from ss CaK to ds CaK. I found when I went to ts CaK the exposure time became just too long. The bright points appear 'brighter' in the TS though.


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Re: CaK, 27022019. Double plus triple.

Post by bart1805 » Sun Feb 24, 2019 8:11 am

george9 wrote:
Sun Feb 24, 2019 3:02 am
All look good, Bart. Does the third one have a little more gradation of brightnesses in the active region compared to the other two? The first definitely has the least. The second is similar to the third in that respect, but may be a little more washed out in the rest of the disk (non-AR). So that would favor the third overall. But may depend on focus, processing, image scale, etc.

George
I think you are right George. But the comparison is not completely fair I realised. They both are triple stacked, but the last one also includes half a Baader K-line.

Agree what you say Mark. From SS to DS is the biggest difference. Triple with the K-line was 10ms and a gain setting of about 190 (have to check it out). So the SSM was very useful.



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Re: CaK, 23022019. Double plus triple.

Post by Montana » Sun Feb 24, 2019 6:38 pm

I just think they are all remarkable to get such clarity and sharp detail :bow :bow :bow

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Re: CaK, 23022019. Double plus triple.

Post by Bob Yoesle » Sun Feb 24, 2019 7:41 pm

HI Bart,

Your results look similar to mine, and I can definitely see more detail at the limb with the triple stack.


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