ETC Request ID: STIS.sp.845010

Exposure time (seconds) = 2,600.0000 at wavelength 2026.00 Å

gives: SNR = 37.1461 (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 pix) (2.0 pix resel x pix)
    Source 0.297 1,545.76 39.32
    Background 0.011 54.60 7.39
        Sky 6.777e-11 3.52e-07 5.94e-04
        Dark Current 0.011 54.60 7.39
Total in selected region 0.308 1,600.36 41.61
Brightest Pixel (single exposure) (at 2074.35 Å) 0.133 345.54
Count rate entire detector 13,305.956
Buffer Time (sec) 150.31
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 7,906.394 20,556,624.698
    Background (sky+dark) 1,572.864 4,089,446.40
Encircled energy fraction 0.93

Instrument name: STIS
Mode: spectroscopic
Detector: NUVMAMA
Central Wavelength: 1963
Grating: [E230H] R ~ 114000
Aperture: 0.2X0.09


Target: [point source]
Spectrum: User uploaded spectrum: hd233622_iueSCALE+model.dat
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 24.2