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Search Tonight's Best (or search anything) by Apparent Size

When constructing my possible targets for astrophotography, apparent size is an important criterion. It would be enormously beneficial if one could search for objects by apparent size. For example, for a given telescope and camera setup, the Andromeda Galaxy, with it's apparent size of 177.8 x 69.7 arcmin, is too big to image. On the other hand, the Horsehead Nebula, with it's apparent size of 6 x 4 arcmin, is too small. It is quite tedious going through the entire list of "Tonight's Best" and reviewing all the apparent sizes to finally figure out what I can image.

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