FDs in Ha and CaK 25th June 2022

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Carbon60
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FDs in Ha and CaK 25th June 2022

Post by Carbon60 »

Just a couple of disks from this morning.

I stopped down my 125 Tecnosky to 60 mm following a discussion with Mark for the B1800 Lunt CaK module. I had to remove the internal Omega filter from the B1800 module because the image was really unevenly illuminated. A bit more experimentation required to optimise.

Image20220625_CaK_FD_Mono by Stuart Green, on Flickr

Image20220625_CaK_FD_colour by Stuart Green, on Flickr

Ha FD using my Lunt 60

Image20220625_Ha_FD_Mono by Stuart Green, on Flickr

Image20220625_Ha_FD_colour by Stuart Green, on Flickr

Thanks for looking.

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/
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Re: FDs in Ha and CaK 25th June 2022

Post by torsinadoc »

Very nice full discs. Thanks for sharing

Alan


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Re: FDs in Ha and CaK 25th June 2022

Post by marktownley »

Nice disks there Stu, strange how illumination was uneven.


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Re: FDs in Ha and CaK 25th June 2022

Post by Carbon60 »

Hi Mark,
I think it’s the position/angle of the internal Omega filter. My guess is the higher focal ratio makes the setup more sensitive to angular misalignment if the filters are not exactly normal to the light cone. The Omega is only held in place with PTFE tape on the threads to make it fit.

Something to ‘fettle’.

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/
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Re: FDs in Ha and CaK 25th June 2022

Post by rigel123 »

Excellent disks Stu!


Warren

Lunt LS60T DS
Orion ED80T CF
Meade ETX LS6
Lunt CaK BF1200
Lunt WL Wedge
Baader Photographic Film
ASI174MM
Skyris 236M
Player One Saturn-M SQR

https://www.astrobin.com/users/rigel123/
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Re: FDs in Ha and CaK 25th June 2022

Post by arnedanielsen »

Really nice discs, Stu!

Thanks for sharing,
Arne


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Re: FDs in Ha and CaK 25th June 2022

Post by Montana »

Breath taking views Stuart :bow :hamster:

Alexandra


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Re: FDs in Ha and CaK 25th June 2022

Post by Carbon60 »

Many thanks, Warren, Arne and Alexandra.

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/
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Re: FDs in Ha and CaK 25th June 2022

Post by ffellah »

Lovely views of the sun from the UK, Stu. Very windy here, now I understand some of the challenges...

Franco


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Re: FDs in Ha and CaK 25th June 2022

Post by RodAstro »

Nice images Stu

Just a tip for the Omega filters, they fit perfectly into the 1.25 plastic moon filter fittings that are supplied with scopes like cheap Celestrons.
You may need to protect the plastic though.
Attachments
moon filter.jpg
moon filter.jpg (17.89 KiB) Viewed 288 times


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Re: FDs in Ha and CaK 25th June 2022

Post by RodAstro »

also sold as Skywatcher as well

Cheers Rod


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Re: FDs in Ha and CaK 25th June 2022

Post by Carbon60 »

Many thanks, Franco I hope you’re enjoying your vacation :)

Thanks for the tip, Rod.

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/
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