Zwo and skywatcher 130pds

[Simon Dunsmore]

Hi Folks,

Quick question, looking at a cooled zwo camera to use with my skywatcher 130pds

Kind of torn between the 183 and 533. From my school boy maths, I think that the 183 could potentially lead to over sampling. Any suggestions?

Looking to image DSOs and work with asi air pro.

Thanks for your help 

Simon 

[wimvb]

The ASI183 (MC) has rather small pixels, and also a lower full well than the 533. This means that the 533 has a higher dynamic range. You either have fewer bloated stars or more faint detail in each sub, depending on which exposure time you set. The 533 also has a square sensor, so you never have to rotate from landscape to protrait. Personally, those two advantages alone would make me prefer the 533.

Btw, if you go for the 183MM, you can bin 2x2 the small pixels and (theoretically) get an increase in full well and dynamic range. But you need filters. The OSC version of this camera doesn't have that advantage.