asi 178mm bin2x2

[Fieldsy]

Hi all

the 178mm has pretty small pixels and when my subs are 100 secs the stars round but when I go to +120 sec subs the stars elongate a little. so if I binned 2x2 that would make the cam a little less sensitive therefore I could increase expo time and keep rounds stars . Is that right ?

Thanks

[david_taurus83]

You would make it more sensitive. The idea is that you make 1 large pixel out of 4 (2×2)  so all the photons that hit that super pixel add to its charge and increase brightness. This works in a CCD better than a CMOS. You might be better to resample in post processing software. I tried binning an ASI1600 and I had a lot of blocky stars. Resampling in Pixinsight gave better results.

[Adam J]

Yes I would bin 2x2 or even 3x3 if you are taking narrow band images with that camera.

[tomato]

I have found the software binning tool in StarTools works well with data from this camera.