Full disc 06/08/2022 on Quark

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LucaR
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Full disc 06/08/2022 on Quark

Post by LucaR »

Nothing very special today on that same old sun this august 6, 2022 but hey... we alway like it, right? :-)

EDIT: new version with better definition:

Image

( Link to preceding one for comparison: https://storage.googleapis.com/dso-brow ... iginal.png )

APO 102 f/5 - Daystar Quark - Asi2600mm.
Firecapture / Autostakkert / IMPPG / AstroSurface / Photoshop

Wether was very windy / turbulent here in north of France, quite hard to get a good focus...

EDIT: + a quick negative style treatment of same stack:

Image
Last edited by LucaR on Sun Aug 07, 2022 5:35 pm, edited 2 times in total.


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Re: Full disc 06/08/2022 on Quark

Post by DeepSolar64 »

Your image agrees well with my visual view. 👍🏻

James


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Re: Full disc 06/08/2022 on Quark

Post by MAURITS »

Nice to see Luca.


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Re: Full disc 06/08/2022 on Quark

Post by ffellah »

A very nice disk Luca

Franco


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Re: Full disc 06/08/2022 on Quark

Post by Radon86 »

Hi Luca,
Nice work. Take a look at my disc, also taken with a Quark, single frame as well.
Taken today 7th August 2022

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Re: Full disc 06/08/2022 on Quark

Post by LucaR »

Radon86 wrote: Sun Aug 07, 2022 2:56 pm Hi Luca,
Nice work. Take a look at my disc, also taken with a Quark, single frame as well.
Taken today 7th August 2022

Magnus
Nice! I wonder how do you get that filaments much more visible, is it due to a difference in hardware or only in treatment?

I use an APO 102 triplet with a Daystar Quark combo + barlow, thus it gives something around f/d 16 or 17. My stacked image looks like this:
2022-08-06-1223_1-U-G-Sun_Halpha - POS1_lapl5_ap1258.jpg
2022-08-06-1223_1-U-G-Sun_Halpha - POS1_lapl5_ap1258.jpg (974.91 KiB) Viewed 284 times

How does yours looks?


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Re: Full disc 06/08/2022 on Quark

Post by Radon86 »

Hi Luca !

I don't know why mine has more contrast, maybe it is your camera ? What is the pixel size of your camera sensor.
I am happy to help you, it may take a bit of time to work out.

Mine looks like this after stacking...I had tests done to find out where to place the sun in the field of view. I suspect my optical train is not truly centered correctly, may be due to sagging in the tubes/optical train.
Here it is (in .jpg format), the video is stacked in AS!3..

Magnus
2022-08-07-0913_8-U-Halpha-Sun_Halpha_lapl5_ap1556.jpg
2022-08-07-0913_8-U-Halpha-Sun_Halpha_lapl5_ap1556.jpg (61.79 KiB) Viewed 276 times


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Re: Full disc 06/08/2022 on Quark

Post by Radon86 »

Hi Luca,
Is your Quark on band [calibrate your Quark.., mine is best for disc detail at +2 or +3 (+ is clockwise from the 12 oçlock centre dial point).
Magnus


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Re: Full disc 06/08/2022 on Quark

Post by Radon86 »

Luca,
I don't know the answer to why your Quark is not showing the contrast and detail. I suspect you are not on band. Have you asked Daystar to see if there is a problem with the Quark?
Did you calibrate your image with "flats" [flat frame] first of all before imaging in Firecapture ?
I don't have a Quark Combo, just the Quark Chromosphere (x4.3 internal barlow) .
Maybe some of the experts here like Mark Townley, Alexandra, Pedro, Maurits, etc..may have the answer.

Magnus


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Re: Full disc 06/08/2022 on Quark

Post by LucaR »

Thanks!
Radon86 wrote: Sun Aug 07, 2022 3:37 pm Mine looks like this after stacking...
OK thanks! Obviously I dont have the same contrast at capture - so its a question of HW, not processing.
Hi Luca,
Is your Quark on band [calibrate your Quark.., mine is best for disc detail at +2 or +3 (+ is clockwise from the 12 oçlock centre dial point).
Magnus
Position 1 is the better for me... means the best one would be even lower, probably :-/ OR maybe its a question of F/D and focale? I use a telecentric barlow but its only x3. I calculated arround f/15 or f/16 which is said to be the lower limit for Daystar. Maybe I could try with a x4 ou x5 one (but I wont have the full disc anymore :-/)
Did you calibrate your image with "flats" [flat frame] first of all before imaging in Firecapture ?
Yes I made flats and used them in Autostakert.


BTW, what's good with astronomy is we always have something to learn :-) Starting from the same stack I gave a try to the deconvolution of IMGPP and it gave me much better result that what I achieved until now using Astrosurface! So here is a much better defined version of the same picture:

Image

Preceding one for comparison: Image

Now I will use IMPPG much more often :-)


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