Guide camera binning

[cardconvict]

Hello All I'm interested to know what everyone else does when guiding. My question is is it better or not to bin the guide camera. I have a QHY5 ii with a finder guider set up and ST80. Was wondering if it is better to bin the camera or not and what are peoples thoughts on this

[SamAndrew]

You might consider binning if you're using an OAG at a long focal length. For a guide scope I don't think it's necessary.

[michael8554]

To expand on what Sam said:

You might need to bin to double the guide image scale if it's low.

Or to improve the sensitivity of a budget guidecam like your QHY5L II.

Michael