ETC Request ID: STIS.sp.1382666

Exposure time (seconds) = 1,213.0000 at wavelength 2300.00 Å

gives: SNR = 21.0936 (per resolution element)


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 0.196 476.66 21.83
    Background 0.014 33.98 5.83
        Sky 5.911e-06 0.01 0.12
        Dark Current 0.014 33.96 5.83
Total in selected region 0.210 510.64 22.60
Brightest Pixel (single exposure) (at 2796.80 Å) 2.626 3,185.75
Count rate entire detector 2,498.782
Buffer Time (sec) 800.39
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 384.468 466,360.287
    Background (sky+dark) 2,114.313 2,564,661.91
Encircled energy fraction 0.85

Instrument name: STIS
Mode: spectroscopic
Detector: NUVMAMA
Central Wavelength:
Grating: [G230L] R ~ 500
Aperture: 52X2


Target: [point source]
Spectrum: User uploaded spectrum: gmaur_HSTv3.txt
Extinction E(B-V): None
Normalization: None
Redshift: None
Emission Lines: None


Selected background:
  Sky Background:
    Level:

Table of Source and Noise Counts per Pixel

Plots

These results were computed using: ETC version 27.2