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WFC/HRC Filter Wheel 1

WFC/HRC Filter Wheel 1
Wavelength (е) Name F555W F775W F625W F550M F850LP POL0UV POL60UV POL120UV Description Johnson V SDSS i SDSS r Narrow V SDSS z UV polarizer 0
o o o

WFC/HRC Filter Wheel 2
Wavelength (е) Camera Name F660N F814W FR388N FR423N FR462N
a a

c 5346 7764 6318 5580 9445 2000-6000 2000-6000 2000-6000 8917 5907 5022 5800-11000 6584 4760

1193 1528 1442 547 1229 ... ... ... 154 2342 57 R~100 78 1458 WFC/HRC WFC/HRC WFC/HRC WFC/HRC WFC/HRC HRC[/WFC]

Description [N II] (1%) Broad I [O II] ramp (middle) [O II] ramp (inner) [O II] ramp (outer) Johnson B H ramp (middle) H ramp (inner) H ramp (outer) Visible Polarizer 0o HRC U Visible Polarizer 60o Near-UV broadband Visible Polarizer 120o NUV prism NeV (2%) Near-UV broadband Broad ramp (middle) IR ramp (inner) IR ramp (outer) Broad ramp (middle) Broad ramp (inner) IR ramp (outer) [O III] ramp (middle) [O III] ramp (inner) [O III] ramp (outer)

Camera
c

40 2511 2% 2% 2% 1038 2% 2% 2% ... 588 ... 549 ... R~100 @ 200 nm 60 485 9% 2% 2% 9% 9% 2% 2% 2% 2% WFC/HRC WFC/HRC WFC/HRC WFC WFC WFC/HRC WFC/HRC WFC WFC HRC[/WFC] HRC HRC[/WFC] HRC HRC[/WFC] HRC HRC HRC WFC/HRC WFC WFC WFC/HRC WFC WFC WFC/HRC WFC WFC
a a a

6602 8333 3710-4050 4050-4420 4420-4820 4297 6270-6850 6850-7470 7470-8160 4000-8000 3354 4000-8000 2696 4000-8000 2000-4000 3434 2228 7570-10710 8160-8910 8910-9720 3810-5370 5370-7570 9720-10610 4820-5270 5270-5750 5750-6270

F435W FR656N FR716N FR782N POL0V F330W POL60V F250W POL120V PR200L F344N

UV polarizer 60

HRC[/WFC ] HRC[/WFC] HRC[/WFC] WFC/HRC WFC/HRC WFC/HRC WFC/HRC WFC/HRC

UV polarizer 120 Methane (2%) Broad V [OIII] 1% Grism H (1%) SDSS g

a a

WFC/HRC Filter Wheel 2

F892N F606W F502N G800L F658N F475W a.

[/WFC] indicates that polarizer filters (designed for HRC), yield a vignetted WFC field of 72" x 72".

SBC Filter Wheel
Name Description MgF CaF BaF
2

F220W FR914M FR853N FR931N FR459M FR647M FR1016N FR505N FR551N FR601N a.

Wavelength/Resolution 1150 е (longpass) 1250 е (longpass) 1400 е (longpass) 1500 е (longpass) 1650 е (longpass) c=1200 е; =60 е R~100 R~100

SBC Filter Wheel

F115LP F125LP F140LP F150LP F165LP F122M PR110L PR130L

2 2

Crystal Quartz Fused Silica Ly LiF Prism CaF2 Prism

[/WFC] indicates that polarizer filters (designed for HRC), yield a vignetted WFC field of 72" x 72".


HST focal plane after SM4

ACS
Wide Field Channel (WFC) Limiting magnitudes for point sources in 10 hours.
· · · · 3 mirror design, overcoated silver on mirrors Two 2048 x 4096 15 m/pixel CCDs optimized for I-band 202" x 202" field of view 0".05 pixels; critically sampled at 8000 е

Advanced Camera for Surveys

The ACS Wide Field Channel was fully restored to operation during Servicing Mission 4 (SM4). The High Resolution Channel was not recovered during SM4 and is unavailable for science. The Solar Blind Channel was unaffected by the repair and remains available for far-ultraviolet imaging and spectroscopy.

Solar Blind Channel (SBC)
· · · · · 1024 x 1024 CsI 25 m/pixel MAMA 2 mirror design, MgF2 on Al FUV imaging and spectroscopy (1150 - 1700 е) 2 prisms, 5 long-pass filters, 1 Lyman filter 35" x 31" field of view, ~0".032 pixels

High Resolution Channel (HRC)
· · · · · (inoperative) 3 mirror design, MgF2 on Al 1024 x 1024 21 m/pixel near-UV enhanced CCD 29" x 26" field of view 0".025 pixels; critically sampled at 5000 е Aberrated beam coronagraphy from 2000 to 11000 е

WFC Performance Summary Limiting magnitudes for extended sources in 10 hours. The plotted quantities are end-to-end throughputs, including filter transmissions calculated at the pivot wavelength of each broadband filter.
Characteristic January 2007 (pre-SM4) 5.5 10.7 0.68 84,000 < 0.1 < 0.999949 4x10-5 May 2009 (post-SM4) 3.9-4.7 20-25 1.1 > 80,000 < 0.2 0.99989 (5 ± 4) x 10-5

V-band detection limits for WFC, HRC, and SBC
Read noise (e ; gain=2)
Camera Filter V limit (S/N = 5, exposure time = 1 hour) O5 V (Kurucz model) WFC WFC F606W F814W F330W F606W F125LP 27.8 26.7 26.8 27.3 27.8 A0 V (Vega) 27.8 27.0 24.8 27.3 23.2 G2 V (Sun) 28.0 27.7 Non-linearity (%) HRC HRC SBC 24.1 27.5 13.5 CTE (1620

Dark current (e /pix/hr)
Hot pixels (%)

The Advanced Camera for Surveys was built through a collaborative effort between Johns Hopkins University, Ball Aerospace, & Goddard Space Flight Center. For more information visit the ACS web page: http://www.stsci.edu/hst/acs or send email to: help@stsci.edu SPACE
TELESCOPE SCIENCE INSTITUTE
Operated by AURA for NASA

Full well depth (e )

e-;

EPER)

January 2010

Cross-talk (50,000 source)

e-