174 or 432

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alessbonsai
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174 or 432

Post by alessbonsai »

new camera.
a zwo 174 or better a 432 is still worth it. what do you recommend to have speed and sampling around f30 in Ha


Dennis
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Re: 174 or 432

Post by Dennis »

I would go with the one that has the highest QE in Ha. From there adapt sampling with a reducer if necessary.


Triband C9.25

H-a: 1-2 Lunt40 rear mounted

WL: Antlia 500nm/ 3nm, 393 nm/ 3nm

Ca-K: homebrew (includes 2x 1.5A filters, thanks Apollo), corrective lenses (thanks again Apollo)

Cameras: imx432 + imx462
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Re: 174 or 432

Post by TareqPhoto »

Dennis wrote: Thu Oct 12, 2023 9:13 am I would go with the one that has the highest QE in Ha. From there adapt sampling with a reducer if necessary.
So in this case i could use APS-C cooled camera too?


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Re: 174 or 432

Post by Dennis »

TareqPhoto wrote: Thu Oct 26, 2023 9:12 am
Dennis wrote: Thu Oct 12, 2023 9:13 am I would go with the one that has the highest QE in Ha. From there adapt sampling with a reducer if necessary.
So in this case i could use APS-C cooled camera too?
which one do you mean?


Triband C9.25

H-a: 1-2 Lunt40 rear mounted

WL: Antlia 500nm/ 3nm, 393 nm/ 3nm

Ca-K: homebrew (includes 2x 1.5A filters, thanks Apollo), corrective lenses (thanks again Apollo)

Cameras: imx432 + imx462
Barlows:
-2x Gerd Düring 2.7x
-2x TMB 1.8x
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Re: 174 or 432

Post by TareqPhoto »

Dennis wrote: Thu Oct 26, 2023 9:15 am
TareqPhoto wrote: Thu Oct 26, 2023 9:12 am
Dennis wrote: Thu Oct 12, 2023 9:13 am I would go with the one that has the highest QE in Ha. From there adapt sampling with a reducer if necessary.
So in this case i could use APS-C cooled camera too?
which one do you mean?
IMX571 sensor camera.


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Re: 174 or 432

Post by Dennis »

TareqPhoto wrote: Thu Oct 26, 2023 9:54 am
Dennis wrote: Thu Oct 26, 2023 9:15 am
TareqPhoto wrote: Thu Oct 26, 2023 9:12 am

So in this case i could use APS-C cooled camera too?
which one do you mean?
IMX571 sensor camera.
It has a chip diagonale of 28mm, the quark has a free aperture of around 20mm. So even without reducer you will get heavy vignetting with this camera.


Triband C9.25

H-a: 1-2 Lunt40 rear mounted

WL: Antlia 500nm/ 3nm, 393 nm/ 3nm

Ca-K: homebrew (includes 2x 1.5A filters, thanks Apollo), corrective lenses (thanks again Apollo)

Cameras: imx432 + imx462
Barlows:
-2x Gerd Düring 2.7x
-2x TMB 1.8x
TareqPhoto
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Re: 174 or 432

Post by TareqPhoto »

Dennis wrote: Thu Oct 26, 2023 10:45 am
TareqPhoto wrote: Thu Oct 26, 2023 9:54 am
Dennis wrote: Thu Oct 26, 2023 9:15 am

which one do you mean?
IMX571 sensor camera.
It has a chip diagonale of 28mm, the quark has a free aperture of around 20mm. So even without reducer you will get heavy vignetting with this camera.
I see, so what to use or what to do?


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Re: 174 or 432

Post by Dennis »

You can use a camera with either a small chip like the imx462 or a camera with large pixels.


Triband C9.25

H-a: 1-2 Lunt40 rear mounted

WL: Antlia 500nm/ 3nm, 393 nm/ 3nm

Ca-K: homebrew (includes 2x 1.5A filters, thanks Apollo), corrective lenses (thanks again Apollo)

Cameras: imx432 + imx462
Barlows:
-2x Gerd Düring 2.7x
-2x TMB 1.8x
TareqPhoto
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Re: 174 or 432

Post by TareqPhoto »

Dennis wrote: Thu Oct 26, 2023 10:50 am You can use a camera with either a small chip like the imx462 or a camera with large pixels.
I don't have 462 but i really really wish or want to sell my 290 first then i can buy that 462 [mono] immediately, and about large pixel something like what? I have 174 and 432.


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Re: 174 or 432

Post by Dennis »

TareqPhoto wrote: Thu Oct 26, 2023 4:55 pm
Dennis wrote: Thu Oct 26, 2023 10:50 am You can use a camera with either a small chip like the imx462 or a camera with large pixels.
I don't have 462 but i really really wish or want to sell my 290 first then i can buy that 462 [mono] immediately, and about large pixel something like what? I have 174 and 432.
The 290 you can use with the daystar reducer. The 432 you can use too, its basically just right for the quark. No reducer needed in this case.


Triband C9.25

H-a: 1-2 Lunt40 rear mounted

WL: Antlia 500nm/ 3nm, 393 nm/ 3nm

Ca-K: homebrew (includes 2x 1.5A filters, thanks Apollo), corrective lenses (thanks again Apollo)

Cameras: imx432 + imx462
Barlows:
-2x Gerd Düring 2.7x
-2x TMB 1.8x
TareqPhoto
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Re: 174 or 432

Post by TareqPhoto »

Dennis wrote: Thu Oct 26, 2023 5:07 pm
TareqPhoto wrote: Thu Oct 26, 2023 4:55 pm
Dennis wrote: Thu Oct 26, 2023 10:50 am You can use a camera with either a small chip like the imx462 or a camera with large pixels.
I don't have 462 but i really really wish or want to sell my 290 first then i can buy that 462 [mono] immediately, and about large pixel something like what? I have 174 and 432.
The 290 you can use with the daystar reducer. The 432 you can use too, its basically just right for the quark. No reducer needed in this case.
Thank you!


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