Full frame sensor choice Asi/qhy 128c or Asi 094/Qhy 367c

[Allinthehead]

So i've pretty much narrowed down my next camera to one of the two sensors. I image with a Takahashi Epsilon 130 and would love to hear peoples opinions on the two sensors and which would suit my scope better. Cost wise i can get either zwo option at the same price but there's a large difference between the two Qhy offerings. About a grand in the difference. 

https://www.firstlightoptics.com/zwo-cameras/zwo-asi094mc-pro-cooled-usb-30-colour-camera.html

https://www.firstlightoptics.com/zwo-cameras/zwo-asi128mc-pro-cooled-usb-30-colour-camera.html

Would the resolution of the 094 offer more than the very deep wells of the 128?

Richard.

[vlaiv]

I would say go for 094.

You are imaging at very short FL, and putting large pixels on it makes less sense than a bit smaller ones.

I also think that 4.88um is quite usable up to two meters of focal length (super pixel mode), so we can say that you are future proof.  A bit better QE and a bit lower read noise.

Don't worry about full well capacity it is not much of a difference. If you use unity gain, you will be limited to 14bit or 16K full well anyway.

 

 

[Allinthehead]

14 minutes ago, vlaiv said:

If you use unity gain, you will be limited to 14bit or 16K full well anyway

Thanks Vlaiv i would be using one stop above the highest dynamic range setting about gain 50 in zwo speak.

[vlaiv]

4 minutes ago, Allinthehead said:

Thanks Vlaiv i would be using one stop above the highest dynamic range setting about gain 50 in zwo speak.

In that case, both would still have same FW of around 32K

[Allinthehead]

3 minutes ago, vlaiv said:

In that case, both would still have same FW of around 32K

Ah yes i see. So the only advantage the 128 has is the pricetag if i wanted the qhy version.

[Adam J]

Go with the smaller pixels given the focal length of the 130. 

[Allinthehead]

12 hours ago, Adam J said:

Go with the smaller pixels given the focal length of the 130. 

Thanks Adam. It seems the 094 is no longer available and at about a grand more expensive i won't be going for the qhy version.

[RonKramer]

On 28/12/2018 at 09:06, Allinthehead said:

Thanks Adam. It seems the 094 is no longer available and at about a grand more expensive i won't be going for the qhy version.

I got one last fall, not used it more than a couple times. (due to winter).  I've been torn on selling it due to bortle 6 here - I tend to do NB only. I just put together a portable setup to take it to darker skies. But I'd consider selling it for a fair offer.