A beautiful morning here (for a change) and a couple of FDs in Ha and Ca II K.
First up is the Ca II K disk in mono using my Tecnosky 125 with a Lunt B1800 module/K-Line and Omega filter stack.
Basler acA2440-75um camera
4-Pane mosaic at native focal length.
20210210_CaK_FD_Mono by Stuart Green, on Flickr
and in colour....
20210210_CaK_FD_colour by Stuart Green, on Flickr
For the Ha disks I revisited my DS Lunt 60 THa but substituted the standard B1200 blocking filter with my Coronado BF15. What a difference..... The image is by far the flattest achieved with this scope in recent times. I'm now wondering about the quality of the regular Lunt BF. This was replaced a little over 12 months ago. Do I get another new one from Lunt and hope for the best? Should I get another Coronado BF15 (the one I used is a stripped back version for my 150mm/Lunt 35 scope and I'd prefer to have one dedicated to the Lunt 60? Decisions.
Anyhow, back to the images. This is a heavily overlapping 6-pane mosaic captured on my Basler acA1920-155um camera with a 2.5x Powermate.
20210210_Ha_FD_Mono by Stuart Green, on Flickr
and again in colour....
20210210_Ha_FD_colour by Stuart Green, on Flickr
It's a pity the Sun is again so relatively quiet.
Thanks for looking.
Stu.
Full disks in Ha and CaK 10th Feb 2021
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Full disks in Ha and CaK 10th Feb 2021
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/
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Re: Full disks in Ha and CaK 10th Feb 2021
"It's a pity the Sun is again so relatively quiet."
Truer words were never spoken. Even so well done.
Truer words were never spoken. Even so well done.
Dan
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South central Indiana
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Re: Full disks in Ha and CaK 10th Feb 2021
Hi Stu,
Well done. I had clouds yesterday.
Well done. I had clouds yesterday.
regards Rainer
Observatorio Real de 14
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Observatorio Real de 14
San Luis Potosi Mexico
North 22° West 101°
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Re: Full disks in Ha and CaK 10th Feb 2021
Very nice Stuart! I especially love the CaK ones since I don't have that capability yet.
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Meade Coronado SolarMax II 90 DS
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Losmandy AZ8 Alt/Az Mount
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Lunt, Coronado, TeleVue, Orion and Meade eyepieces
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Celestron AstroMaster Alt/Az Mount
Meade Coronado SolarMax II 60 DS
Meade Coronado SolarMax II 90 DS
Meade Coronado AZS Alt/Az Mount
Astro-Tech AT72EDII with Altair solar wedge
Celestron NexStar 102GT with Altair solar wedge
Losmandy AZ8 Alt/Az Mount
Sky-Watcher AZGTI Alt-Az GoTo mount
Cameras: ZWO ASI178MM, PGR Grasshopper, PGR Flea
Lunt, Coronado, TeleVue, Orion and Meade eyepieces
Visual Observer
" Way more fun to see it! "
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Re: Full disks in Ha and CaK 10th Feb 2021
Thanks Stu and for the interesting comment about the BF1200 change results.
I have the same scope and BF, so will hopefully see that it will do a decent job when I open the observatory shortly.
I wonder whether to speak to Lunt about your BF to see if they can advise if it can be tested and/or repaired/exchanged ??
Cheers
Terry
I have the same scope and BF, so will hopefully see that it will do a decent job when I open the observatory shortly.
I wonder whether to speak to Lunt about your BF to see if they can advise if it can be tested and/or repaired/exchanged ??
Cheers
Terry
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Re: Full disks in Ha and CaK 10th Feb 2021
Excellent disks there, Stu.
Bit odd that there would be so much difference between those BF's indeed. As Terry already mentioned; maybe not a bad idea to contact Lunt and see what they say.
Bit odd that there would be so much difference between those BF's indeed. As Terry already mentioned; maybe not a bad idea to contact Lunt and see what they say.
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Re: Full disks in Ha and CaK 10th Feb 2021
Nice disks Stu. I've always preferred the Coronado blockers over the Lunts for the same reasons you say above, hence why I sold all my Lunt blockers.
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Re: Full disks in Ha and CaK 10th Feb 2021
Many thanks, everyone. It was nice to get out on the scopes after a string of bad weather days.
Interesting comment, Mark, about the two BF brands. I’ll strip out the Lunt BF from its housing to see if there’s anything obviously wrong, such as deposits on the surface. Other than that I might permanently substitute the Lunt BF with a Coronado one.
Cheers.
Stu.
Interesting comment, Mark, about the two BF brands. I’ll strip out the Lunt BF from its housing to see if there’s anything obviously wrong, such as deposits on the surface. Other than that I might permanently substitute the Lunt BF with a Coronado one.
Cheers.
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/