Predictors of the Use of Enrichment Items in Colony Housed Shelter Cats.

Colony rooms provide cats with many opportunities to use enrichment, but animal shelters usually have finite resources to provision items. This study examined how cats select enrichment items when given a variety of options. Our goal was to identify whether certain enrichment might be particularly beneficial for different cats.

Total-light imager with flat spectral response for solar photometric measurements.

Certain applications in imaging photometry and radiometry require a telescope-detector system with (preferably constant) response over a wide spectral range from the ultraviolet through the infrared. We describe the design and characterization of the Solar Bolometric Imager (SBI), a 30-cm-aperture Dall-Kirkham telescope combined with a gold-blacked, 80, 000-element thermal array detector. Our SBI prototype provides spectrally uniform imaging in total solar light (0.