ADVANCED CAMERA FOR SURVEYS

ACS

The Advanced Camera for Surveys (ACS) is a third-generation Hubble Space Telescope (HST) instrument installed in March 2002 during HST Servicing Mission 3B. The ACS CCD Electronics Box and Low Voltage Power Supply incrementally failed in June 2006 and January 2007, causing the loss of the ACS Wide Field Channel (WFC) and High Resolution Channel (HRC). 

The replacement components (CEB-R and LVPS-R) installed on 16 May 2009 during HST Servicing Mission 4 (SM4), successfully restored the function of the WFC but not that of the HRC. Consequently, only the WFC and the Solar Blind Channel (SBC) are available to observers. 

Current Status

HRC is not operational.

SBC is operating nominally.

WFC is operating nominally.

Improved Absolute Astrometry for WFC3 and ACS

Web Tools and Helpful Links

Advice for Planning ACS Observations

HST Exposure Time Calculator

ACS Photometric CTE Calculator

ACS Space Telescope Analysis Newsletters (STANs)

ACSTOOLS

ACS Zeropoint Calculator

Recently Published ISRs

View all ISRs

Recently Published STANs

View all STANs

ACS Software Updates

ACSTOOLS v3.2.0

• Released April 10, 2020
• Programmatic interface for ACS Photometric CTE released
• NEW acsphotcte module to query ACS Photometric CTE Calculator
• Removed Python 2 support
• Documentation updates

HSTCAL v2.3.0

• Released on September 30, 2019

• CALACS updated to Version 10.2.1