July 28 2021 White Light Extreme

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Simon2940
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July 28 2021 White Light Extreme

Post by Simon2940 »

Tested out the QHY5III 174M on white light and its a winner for sure!

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5x Powermate
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This is with the Esprit 150 and 2 barlows stacked with a bunch of other things

What's more interesting is that once i dialed in the shutter speed, the details just popped off, almost like I found some weird frequency with the atmosphere.


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Re: July 28 2021 White Light Extreme

Post by DeepSolar64 »

Excellent work Simon! There isn't much I like better than crisp clear granulation images and you have that here.


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Re: July 28 2021 White Light Extreme

Post by Carbon60 »

Excellent WL granulation shots, Simon.

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Re: July 28 2021 White Light Extreme

Post by Rusted »

Simon2940 wrote: Thu Jul 29, 2021 1:17 am Tested out the QHY5III 174M on white light and its a winner for sure!

What's more interesting is that once i dialed in the shutter speed, the details just popped off, almost like I found some weird frequency with the atmosphere.
Fascinating. What was this "magical" shutter speed?
Doubling up Barlows will pull the shutter speed right down.
Or demand far too much gain. Or both.

Excellent images BTW. :bow


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Re: July 28 2021 White Light Extreme

Post by marktownley »

Yup, that works! Nice shots!


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Re: July 28 2021 White Light Extreme

Post by MAURITS »

Excellent images Simon.


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Re: July 28 2021 White Light Extreme

Post by Montana »

Always such a delight to see some great granulation :bow :hamster:

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Re: July 28 2021 White Light Extreme

Post by Simon2940 »

Thats what makes the QHY so interesting, when you up the gain, its not as noisy compared to the ZWO, and more importantly, the offset slide can be used to push the histogram off the left side.

How i found the magical shutter speed was to increase 1ms at a time. When I hit 20ms at that point, everything stopped moving. It was just plain weird. Sunday has predicted excellent seeing which is looking quite likely since there is a cool down. Were gonna get get clouded over today and tomorrow with high heat, normally, on the cool down trend here, seeing on the following day is good to excellent. I will test again and this time video the sequence.
Rusted wrote: Thu Jul 29, 2021 5:14 am
Simon2940 wrote: Thu Jul 29, 2021 1:17 am Tested out the QHY5III 174M on white light and its a winner for sure!

What's more interesting is that once i dialed in the shutter speed, the details just popped off, almost like I found some weird frequency with the atmosphere.
Fascinating. What was this "magical" shutter speed?
Doubling up Barlows will pull the shutter speed right down.
Or demand far too much gain. Or both.

Excellent images BTW. :bow


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Re: July 28 2021 White Light Extreme

Post by EGRAY_OBSERVATORY »

The "Porridge" is boiling so well Simon and you have certainly captured the action fabulously...

Well done

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Re: July 28 2021 White Light Extreme

Post by Simon2940 »

You just gave me a funny idea... i need to do a macro shot of sugar and see if it looks similar to the granulation, maybe that's why we called it granulation, as in granulated sugar?? :P
EGRAY_OBSERVATORY wrote: Thu Jul 29, 2021 10:22 pm The "Porridge" is boiling so well Simon and you have certainly captured the action fabulously...

Well done

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Re: July 28 2021 White Light Extreme

Post by EGRAY_OBSERVATORY »

That's a different way of looking for a comparison Simon, but for years I and others have used the term "porridge" and I don't think sugar would entice others to understand that when sugar boils, it would like the same as "granulated", compared to "porridge".. :hamster:

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Re: July 28 2021 White Light Extreme

Post by DavidP »

Simon2940 wrote: Thu Jul 29, 2021 5:12 pm Thats what makes the QHY so interesting, when you up the gain, its not as noisy compared to the ZWO, and more importantly, the offset slide can be used to push the histogram off the left side.
So what’s up with the histogram slide in Firecapture? I have 2 ZWO cameras and don’t see any slide. But I do remember seeing it. Perhaps it was with a Basler I had.


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Re: July 28 2021 White Light Extreme

Post by Simon2940 »

I think ZWO cameras in general have the offset slide disabled for some reason, i dont remember why since it was a couple of years ago when they did it to certain cameras. It would make the horizontal banding really bad. Especially the 174, 224 and 120 cameras.
DavidP wrote: Sat Jul 31, 2021 12:26 am
Simon2940 wrote: Thu Jul 29, 2021 5:12 pm Thats what makes the QHY so interesting, when you up the gain, its not as noisy compared to the ZWO, and more importantly, the offset slide can be used to push the histogram off the left side.
So what’s up with the histogram slide in Firecapture? I have 2 ZWO cameras and don’t see any slide. But I do remember seeing it. Perhaps it was with a Basler I had.


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Re: July 28 2021 White Light Extreme

Post by DavidP »

Where is the Histogram slide feature found?


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Re: July 28 2021 White Light Extreme

Post by MapleRidge »

Love those granulation details Simon :bow

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