AR2738 in CaK
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AR2738 in CaK
The idea for today was to image the sun in 5 wavelengths:
CaK
K-Line
Solar Continuum
White Light
H-alpha
But I only succeeded in taking one (1) AVI when the clouds rolled in.... So here is AR2738 in CaK.
100mm ED f/9 _ nosepiece of Lunt filter _ single K-line _ 2 PST#1 filters _ ASI290MM
Moon_111413_120419_Gain=64(off)_Exposure=5.9ms_Gamma=63apsize3232601_IMPPG_UM6 by bart moors, on Flickr
The picture is clearly undersampled, so I tried 1,5x Drizzle in AS!3.
Moon_111413_120419_Gain=64(off)_Exposure=5_randPS by bart moors, on Flickr
I kind of like the Drizzle version.
Thanks for watching!
Bart.
CaK
K-Line
Solar Continuum
White Light
H-alpha
But I only succeeded in taking one (1) AVI when the clouds rolled in.... So here is AR2738 in CaK.
100mm ED f/9 _ nosepiece of Lunt filter _ single K-line _ 2 PST#1 filters _ ASI290MM
Moon_111413_120419_Gain=64(off)_Exposure=5.9ms_Gamma=63apsize3232601_IMPPG_UM6 by bart moors, on Flickr
The picture is clearly undersampled, so I tried 1,5x Drizzle in AS!3.
Moon_111413_120419_Gain=64(off)_Exposure=5_randPS by bart moors, on Flickr
I kind of like the Drizzle version.
Thanks for watching!
Bart.
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Re: AR2738 in CaK
They came out well Bart. What do you think an ideal focal ratio with this scope and camera setup would be?
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Re: AR2738 in CaK
Thanks Franco and Mark!marktownley wrote: ↑Sat Apr 13, 2019 7:20 am They came out well Bart. What do you think an ideal focal ratio with this scope and camera setup would be?
Hard to say Mark, but I think somewhere between f/14 and f/16.
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Re: AR2738 in CaK
Interesting Bart, I can image reasonably regularly this time of year with 100mm CaK at f15 ish, the 290 with its small pixels and fast frame rate offers a pleasing proposition... That is a focal ratio I could reach with the HaT and a 540nm filter too for some white light closeups... I'm selling it to myself here aren't I
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Re: AR2738 in CaK
Nice images, Bart. The drizzle version looks great.
Stu.
Stu.
H-alpha, WL and Ca II K imaging kit for various image scales.
Fluxgate Magnetometers (1s and 150s Cadence).
Radio meteor detector.
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Fluxgate Magnetometers (1s and 150s Cadence).
Radio meteor detector.
More images at http://www.flickr.com/photos/solarcarbon60/
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Re: AR2738 in CaK
Beautiful images, Bart!
Raf
My solar images and reports with articles on solar equipment
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Re: AR2738 in CaK
Lovely detail in the image Bart, and the drizzle version certainly looks the best to me.
Well done
Brian
Well done
Brian
Brian Colville
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
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: AR2738 in CaK
Super image despite your session being cut short. Are you using the Skywatcher Evostar scope? If so how do you think it compares with other scopes you have used for Cak?
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Re: AR2738 in CaK
Thanks guys!
No, it is an old Celestron 100mm F/9 ED. It is way better than the 150mm f/8 Skywatcher achromat.
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Re: AR2738 in CaK
Hello Bart,
I prefer the one without drizzle. Inverse granulation is lost in the drizzle version.
I prefer the one without drizzle. Inverse granulation is lost in the drizzle version.
Christian Viladrich
Co-author of "Planetary Astronomy"
http://planetary-astronomy.com/
Editor of "Solar Astronomy"
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Co-author of "Planetary Astronomy"
http://planetary-astronomy.com/
Editor of "Solar Astronomy"
http://www.astronomiesolaire.com/
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Re: AR2738 in CaK
You are right Christian, I did not notice it before you mentioned it. Should try and reprocess the drizzled version. Thanks! Bart.christian viladrich wrote: ↑Mon Apr 15, 2019 7:01 pm Hello Bart,
I prefer the one without drizzle. Inverse granulation is lost in the drizzle version.