Solar Limb in Ha 14th Sept 2021

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Carbon60
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Solar Limb in Ha 14th Sept 2021

Post by Carbon60 »

150mm scope with double stacked Lunt 35s, with Bob's mod in the forward etalon (the rear etalon contains a circular polarising filter).

Zero tilt on both etalons
Basler acA1920-155um
2.5x Powermate
Genika Astro
AS!3
Pixinsight.

Conditions: Scudding clouds and haze.

Image20210914_Ha_Mono by Stuart Green, on Flickr

Image20210914_Ha_Inverted_Mono by Stuart Green, on Flickr

Image20210914_Ha_Inverted_Colour by Stuart Green, on Flickr

Thanks for looking.

Stu.
Last edited by Carbon60 on Tue Sep 14, 2021 5:35 pm, edited 1 time in total.


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Re: Solar Limb in Ha 14th Sept 2021

Post by Ivan »

Hi Stu,
These are amazing images, :bow I would love to see a photo of your setup.

Ivan


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Re: Solar Limb in Ha 14th Sept 2021

Post by Carbon60 »

Ivan wrote: Tue Sep 14, 2021 5:29 pm Hi Stu,
These are amazing images, :bow I would love to see a photo of your setup.

Ivan
Hi Ivan,

This is a few years old now and the DMK41 camera is no longer used, but it gives you an idea of how the scope looks.
DSC_0203_2.JPG
DSC_0203_2.JPG (407 KiB) Viewed 150 times
Thanks for your comments.

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: Solar Limb in Ha 14th Sept 2021

Post by Ivan »

Thanks for the photo Stu, it's an awesome tool.

Ivan


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Re: Solar Limb in Ha 14th Sept 2021

Post by DeepSolar64 »

Stu,
Very nice images. Those active regions are almost gone.

That's a nice refractor. What make is it? It's an F8 I presume?

James


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Re: Solar Limb in Ha 14th Sept 2021

Post by ffellah »

Beautiful images with fine detail and what a great scope, Stu !

Franco :bow


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Re: Solar Limb in Ha 14th Sept 2021

Post by arnedanielsen »

Very sharp and detailed images, Stu!

Beautiful scope as well!

Best regards,
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Re: Solar Limb in Ha 14th Sept 2021

Post by marktownley »

Good results with the mod Stu! The telescopic feature on the legs of my EQ6 tripod have been jammed shut for a couple of years now.


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Re: Solar Limb in Ha 14th Sept 2021

Post by EGRAY_OBSERVATORY »

Thanks for getting some Sun-views to us today Stu and the monster scope seems quite awsome.

Cheers
terry


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Re: Solar Limb in Ha 14th Sept 2021

Post by Carbon60 »

DeepSolar64 wrote: Tue Sep 14, 2021 6:27 pm Stu,
Very nice images. Those active regions are almost gone.

That's a nice refractor. What make is it? It's an F8 I presume?

James
Hi James,

The scope is a home build. It’s an f10 objective, but with the internal Barlow and Lunt 35 refocusing lens the scope ends up at around f14 native.

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: Solar Limb in Ha 14th Sept 2021

Post by Carbon60 »

marktownley wrote: Tue Sep 14, 2021 8:11 pm Good results with the mod Stu! The telescopic feature on the legs of my EQ6 tripod have been jammed shut for a couple of years now.
Hi Mark,
Interesting. All three levers have now failed on mine :roll:

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: Solar Limb in Ha 14th Sept 2021

Post by gabrieli »

Hi, Stu

These are my favourite kind of limb shots, with lots of activity, beautifully imaged.
I know that many trials were necessary before you refined your double stack system but it sure looks like you have
a winner.

I'm going through something similar now with a PST/Quark Combo DS which, although not always cooperative, can be nudged into performing well once you find the right ROI and PST tilt.

I'm going to revisit a PST/PST DS. I have the adapters necessary and have tried before but I didn't follow through
as much as I should have. It would be great to have a DS system that doesn't have a heating component.

Lou


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Re: Solar Limb in Ha 14th Sept 2021

Post by Montana »

Beautiful images and perfect in every way :bow :hamster:

Alexandra


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Re: Solar Limb in Ha 14th Sept 2021

Post by Rusted »

Beautiful images Stu. :bow

There's an effortless subtlety and realism to the fine detail.
None of the overemphasis in relief which dogs my own limb images. :D
You enjoy very even results across the entire frame.
Thanks for sharing your successful mods and superb images.


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Re: Solar Limb in Ha 14th Sept 2021

Post by AJamesB »

Great shots!

And love for the dmk41, it was my first solar camera. Will always have a place in my heart:)


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Re: Solar Limb in Ha 14th Sept 2021

Post by DeepSolar64 »

Carbon60 wrote: Wed Sep 15, 2021 7:03 am
DeepSolar64 wrote: Tue Sep 14, 2021 6:27 pm Stu,
Very nice images. Those active regions are almost gone.

That's a nice refractor. What make is it? It's an F8 I presume?

James
Hi James,

The scope is a home build. It’s an f10 objective, but with the internal Barlow and Lunt 35 refocusing lens the scope ends up at around f14 native.

Stu.

Did you grind and figure the lens elements yourself? Few people can do this.


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Re: Solar Limb in Ha 14th Sept 2021

Post by MAURITS »

Beautiful images Stu and very cool equipment.


Regards,
Maurits

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Re: Solar Limb in Ha 14th Sept 2021

Post by Carbon60 »

DeepSolar64 wrote: Thu Sep 16, 2021 4:58 am
Carbon60 wrote: Wed Sep 15, 2021 7:03 am
DeepSolar64 wrote: Tue Sep 14, 2021 6:27 pm Stu,
Very nice images. Those active regions are almost gone.

That's a nice refractor. What make is it? It's an F8 I presume?

James
Hi James,

The scope is a home build. It’s an f10 objective, but with the internal Barlow and Lunt 35 refocusing lens the scope ends up at around f14 native.

Stu.

Did you grind and figure the lens elements yourself? Few people can do this.
Ha ha....no..no, James. The objective is an iStar Optical 150mm f10 APO. I drew the line at making the metallic OTA.

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: Solar Limb in Ha 14th Sept 2021

Post by marios i. »

Nice stuff!


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Re: Solar Limb in Ha 14th Sept 2021

Post by DeepSolar64 »

Ah, Stuart. An iStar apochromat. Cool!!


Lunt 8x32 SUNoculars
Orion 70mm Solar Telescope
Celestron AstroMaster Alt/Az Mount
Meade Coronado SolarMax II 60 DS
Meade Coronado SolarMax II 90 DS
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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
ZWO ASI178MM monochrome camera
Lunt, Coronado, TeleVue, Orion and Meade eyepieces

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