CaK set-up and first try, 20012019
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CaK set-up and first try, 20012019
Today first try of the CaK set-up and the Ioptron CEM60.
I mounted the 40mm on top of the 100mm ED f/9. Here is more about the dismantling of the PST CaK's.
viewtopic.php?f=9&t=25213
20190120_105923_resized by bart moors, on Flickr
The CEM60 is a pleasure!
- much easier to carry into the garden than the HEQ5 on the pillar mount.
- slew to target, sync to target and the tracking was almost perfect.
- much more stable than the HEQ5.
- silent!
And the first try of the CaK doublestack based on two PST CaK's. Was struggling with the filters. First I tried this:
Baader Blue - Beloptik UV/IR cut on KG3 / Baader CaK filter mounted in two separate filter cells / PST #1 / PST #1 / ASI290mm
Could not get a clear image. Using just one of the Baader CaK filters did not make a difference. Then I removed the Beloptik filter, and that was the solution for now. So here is the first image with this set-up:
Sun_12271143500_DS_IMPPG by bart moors, on Flickr
Shutter: 10ms
no gain, no gamma applied.
Autostakkert, stacked the best 15 images
IMPPG:
LR deconvolution: Sigma 1,0500; Iterations 50
Unsharp masking: Sigma 1,400; Amount 1,400
Gamma: 0,8
Thanks for watching!
CS, Bart.
I mounted the 40mm on top of the 100mm ED f/9. Here is more about the dismantling of the PST CaK's.
viewtopic.php?f=9&t=25213
20190120_105923_resized by bart moors, on Flickr
The CEM60 is a pleasure!
- much easier to carry into the garden than the HEQ5 on the pillar mount.
- slew to target, sync to target and the tracking was almost perfect.
- much more stable than the HEQ5.
- silent!
And the first try of the CaK doublestack based on two PST CaK's. Was struggling with the filters. First I tried this:
Baader Blue - Beloptik UV/IR cut on KG3 / Baader CaK filter mounted in two separate filter cells / PST #1 / PST #1 / ASI290mm
Could not get a clear image. Using just one of the Baader CaK filters did not make a difference. Then I removed the Beloptik filter, and that was the solution for now. So here is the first image with this set-up:
Sun_12271143500_DS_IMPPG by bart moors, on Flickr
Shutter: 10ms
no gain, no gamma applied.
Autostakkert, stacked the best 15 images
IMPPG:
LR deconvolution: Sigma 1,0500; Iterations 50
Unsharp masking: Sigma 1,400; Amount 1,400
Gamma: 0,8
Thanks for watching!
CS, Bart.
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Re: CaK set-up and first try, 20012019
Very nice indeed how did you manage to find 2 CaK PST's, I have struggled for years to find one.
Alexandra
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Re: CaK set-up and first try, 20012019
Thanks Alexandra. I posted a "wanted ad" on a Dutch site. Within a couple of days I got 2 offers.
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Re: CaK set-up and first try, 20012019
Nice capture Bart. I'm sure I remember Apollo saying a similar thing about the Beloptik with CaK.
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Re: CaK set-up and first try, 20012019
Thanks Mark, I thought he said that when you used the Chroma filter there was no use for the Baader CaK. But don't remember exactly.
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Re: CaK set-up and first try, 20012019
Thanks Eric. It was freezing cold, sun was about 17 degrees high, but happy to be able to test both the CEM60 and the CaK doublestack.
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Re: CaK set-up and first try, 20012019
It works well Bart. You can just about make out the 'double limb' on the full size image. With the sun high in a deep blue sky you will get proms and disk in one shot easily.
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Re: CaK set-up and first try, 20012019
Tried to work a bit more on the picture. This time in PS. Double limb is a bit easier to see. Processing CaK is difficult, very easy to proces it to hard.
Sun_12271143500_imppg_ps by bart moors, on Flickr
Sun_12271143500_imppg_ps by bart moors, on Flickr
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Re: CaK set-up and first try, 20012019
Hi Bart...
The CaK image looks very good, and the imaging setup look equally impressive!!!
Brian
The CaK image looks very good, and the imaging setup look equally impressive!!!
Brian
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Ha Setup: Lunt LS80PT/LS75FHa/B1200Ha + Home Brew Lunt Double Stack/B1800Ha on the Orion OTA + Daystar Quantum
WL, G-Band & CaK Setup: Lunt Wedge & Lunt B1800CaK, Baader K-Line and Altair 2nm G-Band filter
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Maple Ridge Observatory
Cambray, ON Canada
Photos: https://www.flickr.com/photos/185395281@N08/albums
10'x15 Roll-off Roof Observatory
Takahashi EM400 Mount carrying:
C14 + Lunt 80ED
Deep Sky Work - ASI294MM Pro+EFW 7x36/Canon 60D (Ha mod), ONAG
Planetary Work - SBIG CFW10, ASI462MM
2.2m Diameter Dome
iOptron CEM70G Mount carrying:
Orion EON 130ED, f7 OTA for Day & Night Use
Ha Setup: Lunt LS80PT/LS75FHa/B1200Ha + Home Brew Lunt Double Stack/B1800Ha on the Orion OTA + Daystar Quantum
WL, G-Band & CaK Setup: Lunt Wedge & Lunt B1800CaK, Baader K-Line and Altair 2nm G-Band filter
ASI1600MM, ASI432MM, ASI294MM Pro, ASI174MM, ASI462MM
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Re: CaK set-up and first try, 20012019
Easily visible in the blue image Bart! Nice!
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Re: CaK set-up and first try, 20012019
Very nice, Bart. When you say, "Baader CaK filter mounted in two separate filter cells," do you mean the Baader K-line filter, with the two filters separated into two cells? If so, I am curious why the separation. To change tilt?
I did Baader CCD Blue -> Baader K-line (pair in original cell) -> single PST#1 and got a very nice image given the camera (R2 video).
George
I did Baader CCD Blue -> Baader K-line (pair in original cell) -> single PST#1 and got a very nice image given the camera (R2 video).
George
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Re: CaK set-up and first try, 20012019
Hi George, thanks and yes, you are right. I was not precise enough: it is indeed a Baader K-line filter. Yes, I separated the two filters into two different filter cells. The reason was that I had to much reflections going on when the filter was properly stacked in the original filter cel. So now the distance between the two filters is bigger and now it works better for me.
Still a lot of experimenting to do. Just measured the filter stack and I think the distance between the K-line filter(s) and the sensor of the ASI290 is too big. Shutter was 10 ms, will apply gain next time to bring it down to less than 6 ms.
CS! Bart.
Still a lot of experimenting to do. Just measured the filter stack and I think the distance between the K-line filter(s) and the sensor of the ASI290 is too big. Shutter was 10 ms, will apply gain next time to bring it down to less than 6 ms.
CS! Bart.
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Re: CaK set-up and first try, 20012019
Nice images and setup, Bart. Looks very promising. Good luck with your further optimisation trials.
Stu
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Re: CaK set-up and first try, 20012019
Interesting idea, I will have to give it a try myself.bart1805 wrote: ↑Mon Jan 21, 2019 10:19 pm Hi George, thanks and yes, you are right. I was not precise enough: it is indeed a Baader K-line filter. Yes, I separated the two filters into two different filter cells. The reason was that I had to much reflections going on when the filter was properly stacked in the original filter cel. So now the distance between the two filters is bigger and now it works better for me.
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Re: CaK set-up and first try, 20012019
Thanks Maurits and thanks Stu.
Looked at your website Maurits, beautiful scope!
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Re: CaK set-up and first try, 20012019
I got the idea from another discussion on this forum, so he (or she) deserves the credits.marktownley wrote: ↑Tue Jan 22, 2019 7:20 amInteresting idea, I will have to give it a try myself.bart1805 wrote: ↑Mon Jan 21, 2019 10:19 pm Hi George, thanks and yes, you are right. I was not precise enough: it is indeed a Baader K-line filter. Yes, I separated the two filters into two different filter cells. The reason was that I had to much reflections going on when the filter was properly stacked in the original filter cel. So now the distance between the two filters is bigger and now it works better for me.