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UVCANDELS is a HST Cycle-26 Treasury Program awarded 164 orbits of primaryultraviolet (UV) F275W imaging and coordinated parallel optical F435W imagingin four CANDELS fields: GOODS-N, GOODS-S, EGS, and COSMOS, covering a totalarea of $\sim426$ arcmin$^2$. This is $\sim2.7$ times larger than the areacovered by previous deep-field space UV data combined, reaching a depth ofabout 27 and 28 ABmag ($5\sigma$ in $0.2"$ apertures) for F275W and F435W,respectively. Along with the new photometric catalogs, we present an analysisof the rest-frame UV luminosity function (LF), relying on our UV-optimizedaperture photometry method yielding a factor of $1.5\times$ increase than theH-isophot aperture photometry in the signal-to-noise ratios of galaxies in ourF275W imaging. Using well tested photometric redshift measurements we identify5810 galaxies at redshifts $0.6<z<1$, down to an absolute magnitude of$M_\text{UV} = -14.3$. In order to minimize the effect of uncertainties inestimating the completeness function, especially at the faint-end, we restrictour analysis to sources above $30\%$ completeness, which provides a finalsample of 4731 galaxies at $-21.5<M_\text{UV}<-15.5$. We performed a maximumlikelihood estimate to derive the best-fit parameters of the UV LF. We report abest-fit faint-end slope of $\alpha = -1.286^{+0.043}_{-0.042}$ at $z \sim0.8$. Creating sub-samples at $z\sim0.7$ and $z\sim0.9$, we observe a possibleevolution of $\alpha$ with redshift. The unobscured UV luminosity density at$M_\text{UV}<-10$ is derived as $\rho_\text{UV}=1.309^{+0.24}_{-0.26}\(\times10^{26} \text{ergs/s/Hz/Mpc}^3)$ using our best-fit LF parameters. Thenew F275W and F435 photometric catalogs from UVCANDELS have been made publiclyavailable on the Barbara A. Mikulski Archive for Space Telescopes (MAST).

The UV luminosity function at 0.6 < z < 1 from UVCANDELS