ASI533MC-Pro Vs ASI224MC

[Pitch Black Skies]

What is the benefit of using the 224 for lucky imaging over the 533?

I know the 224 has a higher frame rate due to the lower resolution, but couldn't I just reduce the resolution through the imaging acquisition software (Sharpcap) to achieve a similar frame rate?

[vlaiv]

Slightly higher FPS for same ROI and lower read noise.

QE is about the same.

[Pitch Black Skies]

Thanks vlaiv.

Is the difference negligible?

I initially had a 120MM Mini for my guidecam but exchanged it for the 224MC.

I was under the impression it could double as a reasonably good planetary cam as well as being my guide cam.

But maybe it was a pointless upgrade as the 533 can work just as well?

[vlaiv]

7 hours ago, Pitch Black Skies said:

Is the difference negligible?

Depends what you are after. For casual planetary imaging - it sort of is. I use ASI178 in that role and it has more read noise than 533.

For best performance possible - all things must be taken into account.