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Hubble Space Telescope
Advanced Camera for Surveys

The Advanced Camera for Surveys (ACS) is a third-generation Hubble Space Telescope (HST) instrument. ACS was installed during HST servicing mission 3B. During servicing mission 4, the ACS WFC was repaired after an electronics malfunction in 2007.

Release of CALACS 2012.2 and new CTE-corrected data products

ACS Web Tools

ACS Zeropoint Calculator

ACS CTE Correction Calculator

Late Breaking News

News Archive

31 May 2018 ISR 18-03 by S. Hoffmann et al., "A Minor Contamination Event in May 2017 Affecting the ACS/WFC CCD's" is now posted

17 Apr 2018 ISR 17-09 by J. Mack et al, "ACS/WFC Sky Flats from Frontier Fields Imaging." is now posted

29 Mar 2018 ISR 18-02 by N. Miles, "Updates to Post-Flash Calibration for the Advanced Camera for Surveys Wide Field Channel" is now posted.

16 Mar 2018 ISR 17-10 by S.E. Deustua and J. Mack, "Comparing the ACS/WFC and WFC3/UVIS Calibration and Photometry" is now posted.

16 Feb 2018 ISR 18-01 by V. Kozhurina-Platais et al, "Accuracy of the HST Standard Astrometric Catalog w.r.t. Gaia" is now posted.

29 Dec 2017 ISR 17-13 by J.E. Ryon et al, "Accounting for Readout Dark in ACS/WFC Superbiases" is now posted.

29 Dec 2017 ISR 17-06 by A. Bellini et al, "Post-Flash Validation of the new ACS/WFC Subarrays" is now posted.

27 Oct 2017 ISR 17-08 by S.L Hoffmann and J. Anderson, "A Study of PSF Models for ACS/WFC" is now posted.

11 Sept 2017 ISR 17-12 by A. Bellini et al, "The Hubble Space Telescope "Program of Last Resort" is now posted.

Current ACS Status

SBC is operating nominally.

HRC is not operational.

WFC is operating nominally.