ASI071mc pro Vs ASI294mc pro

[Adam J]

Would anyone who has direct experience of both these sensors comment on their relative performance (size apart). Despite the title I don't really mind what make your camera is, so more IMX071 Vs IMX294 as opposed to just ZWO. 

Am interested in real world performance I can do the maths on sensitivity myself from specification. In the end it's for wide field so the bigger sensor is better for me so long as it's not so much slower that you can take two images with the 294 in the time it takes the 071 to take one in the real world. 

Please if you dont have experience of both or either then resist the urge to comment. 

I would be looking second hand and hence please don't suggest newer models either. Stick to these two.

Cheers,

Adam 

Edited March 21, 2021 by Adam J

[Allinthehead]

Hi Adam, I rate the 071 very highly indeed, in fact the main reason I sold mine (Asi Version) was because of the frosting issue. Be aware that it does give small halos with a reflector. See image below. I've also shot the same target with both the Imx571 and Imx071 and honestly there's very little between them, certainly not enough to justify the cost difference. 

[Adam J]

33 minutes ago, Allinthehead said:

Hi Adam, I rate the 071 very highly indeed, in fact the main reason I sold mine (Asi Version) was because of the frosting issue. Be aware that it does give small halos with a reflector. See image below. I've also shot the same target with both the Imx571 and Imx071 and honestly there's very little between them, certainly not enough to justify the cost difference. 

Is one of those images the 071 and the other the 571?

[Allinthehead]

6 minutes ago, Adam J said:

Is one of those images the 071 and the other the 571?

No. Top image is a crop to show the reflections the 071 produces. No issues with refractors.

[Adam J]

8 minutes ago, Allinthehead said:

No. Top image is a crop to show the reflections the 071 produces. No issues with refractors.

I see, did you have the original or the pro version? 

[Allinthehead]

 Imx571

Imx071

[Allinthehead]

Just now, Adam J said:

I see, did you have the original or the pro version? 

I had both, the original had terrible frosting so I got the pro version as an upgrade. This also had frosting but not to the same extent. It was useable down to about -5. I have heard the qhy version is better but not completely immune to issues of its own.

[Adam J]

33 minutes ago, Allinthehead said:

I had both, the original had terrible frosting so I got the pro version as an upgrade. This also had frosting but not to the same extent. It was useable down to about -5. I have heard the qhy version is better but not completely immune to issues of its own.

Yes I have heard the same. What scope did you use for those images and what settings/ exposures? 

[Allinthehead]

Both images with a Tak Epsilon 130. 180 second exposures for Imx571 

150 second exposures for the imx071.

I see in your signature you use an Esprit 100. I imaged this with the 071 and Esprit 100. 9 panel mosaic.

[david_taurus83]

1 hour ago, Allinthehead said:

 

That's some image!

Edited March 21, 2021 by david_taurus83