ETC Request ID: STIS.sp.1012494

Requested Signal/Noise Ratio = 10.000 at wavelength 1215.97 Å (per resolution element)

gives: Time = 209.1759 seconds


Table of Source and Noise Counts per Pixel

Plots

Detailed Information Count rate Total counts Associated noise
(counts/s) (counts) (counts)
Counts (box 7 pixels high) (1 pix x 7 pix) (2 pix resel x 7 pix)
    Source 0.240 100.44 10.02
    Background 0.001 0.44 0.66
        Sky 2.396e-08 1.00e-05 3.17e-03
        Dark Current 0.001 0.44 0.66
Total in selected region 0.241 100.88 10.04
Brightest Pixel (single exposure) (at 1215.95 Å) 0.080 16.64
Count rate entire detector 196.721
Buffer Time (sec) 10,166.69
For APT purposes, the recommended buffer time should be 4/5 of the buffer time calculated above. Please refer to the STIS Instrument Handbook for more details.
Global Count Rates
    Source only 1.411 295.132
    Background (sky+dark) 195.310 40,854.14
Encircled energy fraction 0.76

Instrument name: STIS
Mode: spectroscopic
Detector: FUVMAMA
Central Wavelength: 1222
Grating: [G140M] R ~ 10000
Aperture: 52X0.1
Glow region: low


Target: [point source]
Spectrum: Empty
Extinction E(B-V): None
Normalization: None
Redshift: None
Emission Lines:
Line at Center 1215.97 Å    FWHM 0.2 Å   Flux 6.62e-14 Fλ


Selected background:
  Sky Background:
    Level:

Table of Source and Noise Counts per Pixel

Plots

These results were computed using: ETC version 25.2