Quark Dial Setting Question

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Dennis
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Quark Dial Setting Question

Post by Dennis »

Hi there,
i have a basic question: which dial setting of my quark should i use?
On the neutral dial setting only about 50% of the etalon is usable (picture). I discovered that on the -5 setting i have a more uniform illumination (picture).
My concerning part is the "good" left side with the -5 setting, is it completely off band, or can i use it like that?

i see 2 choices for this unit: use the neutral dial setting and cut off the right part, or set it to -5 and use it like that. What is better?

method: first i made the -5 setting with flatfield applied, then i switched the dial to neutral position with the same flatfield (waited of course until the led was green). both pictures deconvoluted with the same settings, no other editing done.
Attachments
neutral_.png
neutral_.png (828.59 KiB) Viewed 1761 times
minus5_.png
minus5_.png (771.65 KiB) Viewed 1761 times


Triband C9.25
H-a: Quark Chromosphere with BF mod
WL: Antlia 500nm/ 3nm, 393 nm/ 3nm
Ca-K: homebrew (includes 2x 1.5A filters, thanks Apollo)
Player One Apollo Max + Mars MII
Barlows:
-2x Gerd Düring 2.7x
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Montana
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Re: Quark Dial Setting Question

Post by Montana »

Dennis the first image is offband, the second is much better. Use around the -5. All Quarks are different and the first thing you have to do is a series of images on one feature and image on every dial setting, it takes about 2hrs to do this test properly. Don't use a flat at this stage as you want to watch the area of on band move. Once you have established the correct dial setting you are good to go for the future. I did a write up here https://solarnutcase.livejournal.com/12257.html

Of course, it is naturally extremely annoying when you can see that your 'onband' is outside of the dial settings ;)

Alexandra


Dennis
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Re: Quark Dial Setting Question

Post by Dennis »

Thank you for your help Alexandra.


Triband C9.25
H-a: Quark Chromosphere with BF mod
WL: Antlia 500nm/ 3nm, 393 nm/ 3nm
Ca-K: homebrew (includes 2x 1.5A filters, thanks Apollo)
Player One Apollo Max + Mars MII
Barlows:
-2x Gerd Düring 2.7x
-2x TMB 1.8x
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Re: Quark Dial Setting Question

Post by marktownley »

Yup. -5.

How old is the Quark?


Image
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!
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Re: Quark Dial Setting Question

Post by Dennis »

marktownley wrote: Tue Apr 19, 2022 7:26 am Yup. -5.

How old is the Quark?
Thanks.
Hard to say, i got it used 3 years ago. Around 5 years or more maybe.


Triband C9.25
H-a: Quark Chromosphere with BF mod
WL: Antlia 500nm/ 3nm, 393 nm/ 3nm
Ca-K: homebrew (includes 2x 1.5A filters, thanks Apollo)
Player One Apollo Max + Mars MII
Barlows:
-2x Gerd Düring 2.7x
-2x TMB 1.8x
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Re: Quark Dial Setting Question

Post by marktownley »

Has it always been like this?


Image
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!
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Re: Quark Dial Setting Question

Post by Dennis »

marktownley wrote: Tue Apr 19, 2022 7:33 am Has it always been like this?
Yes. And it was the best of in total 4 that i could lay my hands on.
Only now that the sun is more active i did more imaging and tried different dial settings.


Triband C9.25
H-a: Quark Chromosphere with BF mod
WL: Antlia 500nm/ 3nm, 393 nm/ 3nm
Ca-K: homebrew (includes 2x 1.5A filters, thanks Apollo)
Player One Apollo Max + Mars MII
Barlows:
-2x Gerd Düring 2.7x
-2x TMB 1.8x
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daniele_bonfiglio
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Re: Quark Dial Setting Question

Post by daniele_bonfiglio »

Dennis, by -5 you mean all the way in the counter clock direction (towards the blue) right? The quark in my solar scout also works like yours, the best dial positions being the first and second most counter clock wise. Going to the opposite direction (most clock wise, towards the red) half of the solar disk becomes completely blank without fine features. Best, Daniele


Solar scopes: Daystar Solar Scout DS 60/930
80mm f6 achromatic refractor with Daystar Quark from the Solar Scout
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Re: Quark Dial Setting Question

Post by Dennis »

daniele_bonfiglio wrote: Sun May 08, 2022 7:29 am Dennis, by -5 you mean all the way in the counter clock direction (towards the blue) right? The quark in my solar scout also works like yours, the best dial positions being the first and second most counter clock wise. Going to the opposite direction (most clock wise, towards the red) half of the solar disk becomes completely blank without fine features. Best, Daniele
Yes, all the way counter clock direction. It took me some time to understand how that works with the quarks.
Sadly with some Quarks it doesnt help at all.


Triband C9.25
H-a: Quark Chromosphere with BF mod
WL: Antlia 500nm/ 3nm, 393 nm/ 3nm
Ca-K: homebrew (includes 2x 1.5A filters, thanks Apollo)
Player One Apollo Max + Mars MII
Barlows:
-2x Gerd Düring 2.7x
-2x TMB 1.8x
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Re: Quark Dial Setting Question

Post by PaulB »

I've often wondered which setting to use.
I'll have to experiment with the dial on my Quark.


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