Binning

[Barbequeman76]

Hi

I have a question about Backyard EOS, I use it now since I started with Astrophotography last November and I have a slightly oversampling what I could avoid with the possibilty of binning. With my Focal Length of 1480 mm (Focal Reducer 0.63) and my Canon EOS 700D I get a slightly Oversampling what I can reduce to a good sampling with binning 2x2. I looked everywhere, is binning accessable with Backyard EOS ?

Best wishes

Mark

[admin]

A DSLR is *not* a CCD.  There is no native function for binning an image on a DSLR, the entire image is always downloaded at 1:1.

Regards,

[astroman133]

As Guylain said binning is implemented in the camera hardware, but not in today's DSLR cameras.

In traditional astrophotograhy, binning is the process of combining the values from adjacent pixels into a single value. 2x2 binning reduces the size and resolution of an image by 75%.

In a DSLR sensor the adjacent pixels have different color filters over them so it makes no sense to try to combine them by binning. It would like trying to combine apples, oranges, and pears.

Who knows what the future will bring. Smartphone cameras with tiny pixels have specially designed quad Bayer filters to support color binning. However, for them I believe that they cannot shoot unbinned.

If you typically have moderate to good seeing, being slightly oversampled is not necessarily a bad thing. It is typical to either switch to shooting with a mono camera with appropriately sized pixels with filters so you can bin or to match your telescope with the camera to get the desired resolution to avoid being oversampled.