CaK Full Disk 16th February
- marktownley
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CaK Full Disk 16th February
Hi All.
It's a case of chasing the gaps at the moment with what seems like wall to wall cloud for the week forecast. However there are some gaps so got to go fishing! The solarquest mount saved the day again with it's super quick setup time; grabbing the mount out of the shed, mounting the Coronado SM40 ota on there and powering it up, by the time i'd nipped back inside to get my case with all the cameras etc it was pointing at the sun and tracking away. I used the Cemax 2x barlow to give me f20 on the Grasshopper GH3 91S6M camera. Only time for a couple of exposures in between the scudding clouds before the window closed again but i'm pleased how this came out. It's critically sampled for the 3.69um pixels and not sure I can get anymore detail at this scale. I'm optimistic the solarquest mount with take my (stripped back) Tal100R refractor for full disks at 60mm when the seeing allows.
CaK-FD-bw by Mark Townley, on Flickr
CaK-FD-colour by Mark Townley, on Flickr
Back to waiting for the gaps to appear!
Mark
It's a case of chasing the gaps at the moment with what seems like wall to wall cloud for the week forecast. However there are some gaps so got to go fishing! The solarquest mount saved the day again with it's super quick setup time; grabbing the mount out of the shed, mounting the Coronado SM40 ota on there and powering it up, by the time i'd nipped back inside to get my case with all the cameras etc it was pointing at the sun and tracking away. I used the Cemax 2x barlow to give me f20 on the Grasshopper GH3 91S6M camera. Only time for a couple of exposures in between the scudding clouds before the window closed again but i'm pleased how this came out. It's critically sampled for the 3.69um pixels and not sure I can get anymore detail at this scale. I'm optimistic the solarquest mount with take my (stripped back) Tal100R refractor for full disks at 60mm when the seeing allows.
CaK-FD-bw by Mark Townley, on Flickr
CaK-FD-colour by Mark Townley, on Flickr
Back to waiting for the gaps to appear!
Mark
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Re: CaK Full Disk 16th February
Excellent shoot !!
Christian Viladrich
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Re: CaK Full Disk 16th February
That's beautiful Mark, especially at 40mm
Just rain and clouds here today.
Alexandra
Just rain and clouds here today.
Alexandra
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Re: CaK Full Disk 16th February
I would like to expand my solar photography to include Ca-K imaging. My telescope is a SkyWatcher ED100 refractor. The Baader Ca-K filter would seem to be a good choice for me. It comes with a sheet of Baader AstroSolar film. I already own a Baader Astrozap filter so was wondering if the Astrozap filter could substitute for the AstroSolar film. Another option would be to pair the Ca-K filter with a Baader U filter. As always, any advice and suggestions would be greatly appreciated.
Jordan
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Re: CaK Full Disk 16th February
bresser/messier 150/1200 (or 200/1800 Istar ) Mod -D-Erf 160mm intern-glasspath 1.25-etalon Pst barlow X2 ASI174
https://astropol.pagesperso-orange.fr/b ... 9/best2019
sorry for my English translators google
https://astropol.pagesperso-orange.fr/b ... 9/best2019
sorry for my English translators google
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Re: CaK Full Disk 16th February
Jordan, don't use the Baader U filter it passes light 320-380nm, therefore as CaK is 393nm you will not see anything! I can tell you from experience it is totally black.
The Baader CaK filter is 80A wide and therefore only really a subtle white light light filter which helps enhance faculae from the edge of the disc as seen in white light to the centre. It is not a traditional CaK filter like you see in Mark's image. Nigella has a good example of what it looks like. You must use it in conjunction with a white light filter, it is only a nosepiece filter and does not filter out the harsh rays of the Sun.
https://stargazerslounge.com/topic/3712 ... ader-ca-k/
Alexandra
The Baader CaK filter is 80A wide and therefore only really a subtle white light light filter which helps enhance faculae from the edge of the disc as seen in white light to the centre. It is not a traditional CaK filter like you see in Mark's image. Nigella has a good example of what it looks like. You must use it in conjunction with a white light filter, it is only a nosepiece filter and does not filter out the harsh rays of the Sun.
https://stargazerslounge.com/topic/3712 ... ader-ca-k/
Alexandra
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- marktownley
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Re: CaK Full Disk 16th February
Thanks for the kind words everyone! Yes, echo what Alexandra says, don't use the Venus filter, and, personally I wouldn't bother with the K-line either. Save up and get a Lunt CaK filter if you want to do calcium imaging.
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Re: CaK Full Disk 16th February
Hi Mark,
Well done.
Well done.
regards Rainer
Observatorio Real de 14
San Luis Potosi Mexico
North 22° West 101°
Observatorio Real de 14
San Luis Potosi Mexico
North 22° West 101°
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Re: CaK Full Disk 16th February
That is a beautiful well done CaK disc Mr. Townley. The sun is not very active but it's still nice.
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Re: CaK Full Disk 16th February
Cracking FDs, Mark.
Stu.
Stu.
H-alpha, WL and Ca II K imaging kit for various image scales.
Fluxgate Magnetometers (1s and 150s Cadence).
Radio meteor detector.
More images at http://www.flickr.com/photos/solarcarbon60/
Fluxgate Magnetometers (1s and 150s Cadence).
Radio meteor detector.
More images at http://www.flickr.com/photos/solarcarbon60/
- marktownley
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Re: CaK Full Disk 16th February
Thanks guys! expecting another day of dodging the showers and cloud tomorrow, fingers crossed Thursday afternoons forecast is more optimistic!
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- marktownley
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Re: CaK Full Disk 16th February
Thanks Terry, thanks JAPP. No ROI, this is with full 9Mp resolution, just squared up in post processing.
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Re: CaK Full Disk 16th February
Lovely Mark, I missed the clear bit here, arrived to late.
10ft x 6ft Solar RoR with Warm Room
Lunt 60mm Double Stack HA
80ed WL+ Lunt Hershal Wedge + Badder K-Line filter.
100mm AR + Lunt b1800 Ca-K module.
Neq6 Eq Mount.
2.7m Pulsar Dome.
11in Celestron SCT + White Light Filter.
70mm AR Stellavue.
12inch OO Newtonian.
Eq8 r Pro Mount.
Lunt 60mm Double Stack HA
80ed WL+ Lunt Hershal Wedge + Badder K-Line filter.
100mm AR + Lunt b1800 Ca-K module.
Neq6 Eq Mount.
2.7m Pulsar Dome.
11in Celestron SCT + White Light Filter.
70mm AR Stellavue.
12inch OO Newtonian.
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Re: CaK Full Disk 16th February
This is a superb CaK image Mark...excellent capture and processing
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
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: CaK Full Disk 16th February
Really great disc, Mark, superb.
Raf
My solar images and reports with articles on solar equipment
My solar images and reports with articles on solar equipment
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Re: CaK Full Disk 16th February
Mark,
By this you mean the Lunt CaK 2" star diagonal diagonal filter. Right? Is there any reason that it would not pair well with my Sky-Watcher Pro ED100? My 80th birthday arrives in April so perhaps I can coax it out of my family as a birthday gift. Thanks for your response to my post.
Jordan
By this you mean the Lunt CaK 2" star diagonal diagonal filter. Right? Is there any reason that it would not pair well with my Sky-Watcher Pro ED100? My 80th birthday arrives in April so perhaps I can coax it out of my family as a birthday gift. Thanks for your response to my post.
Jordan
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SkyWatcher ED100 Refractor with Diamond Steeltrack Crawford Focuser
Celestron CG4 Equatorial Mount
Daystar Quark H-Alpha Chromosphere
Lunt CaK B1800 Filter Module
Lunt White Light Solar Wedge
ZWO ASI174MM, ZWOASI1600MM Cameras
SkyWatcher ED100 Refractor with Diamond Steeltrack Crawford Focuser
Celestron CG4 Equatorial Mount
Daystar Quark H-Alpha Chromosphere
Lunt CaK B1800 Filter Module
Lunt White Light Solar Wedge
ZWO ASI174MM, ZWOASI1600MM Cameras
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Re: CaK Full Disk 16th February
Jordan...
That style of filter will work with your 100mm scope...just choose the one that matches your scopes focal length. The B1200CaK would likely be the minimum to consider. You can get them with the diagonal or straight though version of the same blocking filter. Since these are an imaging filter the diagonal doesn't provide much advantage in my opinion.
Brian
That style of filter will work with your 100mm scope...just choose the one that matches your scopes focal length. The B1200CaK would likely be the minimum to consider. You can get them with the diagonal or straight though version of the same blocking filter. Since these are an imaging filter the diagonal doesn't provide much advantage in my opinion.
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
- marktownley
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Re: CaK Full Disk 16th February
Hi Jordan,Jordan Konisky wrote: ↑Wed Feb 17, 2021 10:39 pm Mark,
By this you mean the Lunt CaK 2" star diagonal diagonal filter. Right? Is there any reason that it would not pair well with my Sky-Watcher Pro ED100? My 80th birthday arrives in April so perhaps I can coax it out of my family as a birthday gift. Thanks for your response to my post.
Jordan
The ED100 is a good performer in CaK. Yes a Lunt diagonal, or, as Brian says the straight through module. B1200 as a minimum, consider stretching to the B1800.
Mark
http://brierleyhillsolar.blogspot.co.uk/
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Re: CaK Full Disk 16th February
Excellent catch, Mark.
The SolarQuest mount is fantastic for quick sessions like these!
Best regards,
Arne
The SolarQuest mount is fantastic for quick sessions like these!
Best regards,
Arne
- Jordan Konisky
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Re: CaK Full Disk 16th February
Thank you Mark. I see my way to stretching to the B1800.
Jordan
Jordan
Jordan -
SkyWatcher ED100 Refractor with Diamond Steeltrack Crawford Focuser
Celestron CG4 Equatorial Mount
Daystar Quark H-Alpha Chromosphere
Lunt CaK B1800 Filter Module
Lunt White Light Solar Wedge
ZWO ASI174MM, ZWOASI1600MM Cameras
SkyWatcher ED100 Refractor with Diamond Steeltrack Crawford Focuser
Celestron CG4 Equatorial Mount
Daystar Quark H-Alpha Chromosphere
Lunt CaK B1800 Filter Module
Lunt White Light Solar Wedge
ZWO ASI174MM, ZWOASI1600MM Cameras
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Re: CaK Full Disk 16th February
You won't regret it!Jordan Konisky wrote: ↑Sun Feb 21, 2021 4:47 pm Thank you Mark. I see my way to stretching to the B1800.
Jordan
http://brierleyhillsolar.blogspot.co.uk/
Solar images, a collection of all the most up to date live solar data on the web, imaging & processing tutorials - please take a look!