ETC Request ID: STIS.sp.1290062

Requested Signal/Noise Ratio = 3.000 at wavelength 2825.00 Å (per resolution element)

gives: Time = 3,978.0681 seconds

gives: Time to Saturation (for a single exposure) = 202,967.93 seconds


Table of Source and Noise Counts per Pixel

Plots

Detailed Information Count rate Total counts Associated noise
(e-/s) (e-) (e-)
Counts (box 7 pixels high) (1 pix x 7 pix) (2 pix resel x 7 pix)
    Source 0.019 152.60 12.35
    Background 0.175 1,392.85 37.32
        Sky 6.592e-05 0.52 0.72
        Dark Current 0.175 1,392.32 37.31
    Read Out 32.28
Total in selected region 0.194 1,545.45 50.87
Brightest Pixel (single exposure) (at 2798.60 Å) 0.163 323.39
Global Count Rates
    Source only 15.821 62,938.305
    Background (sky+dark) 26,265.091 104,484,319.32
Encircled energy fraction 0.94

Instrument name: STIS
Mode: spectroscopic
Detector: CCD
Central Wavelength:
Grating: [G230LB] R ~ 700
Aperture: 52X2
Gain: 1.0
# Frames: 2
Binning: dispersion: 1, spatial: 1
Dark: medium


Target: [point source]
Spectrum: User uploaded spectrum: muscles_M5.csv
Extinction E(B-V): None
Normalization: Renormalized to abmag = 21.55 in filter Galex/NUV
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 26.1