ETC Request ID: STIS.sp.1438075

Exposure time (seconds) = 1,500.0000 at wavelength 4300.00 Å

gives: SNR = 76.9223 (per resolution element)

gives: Time to Saturation (for a single exposure) = 27,006.90 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 2.411 7,234.20 85.05
    Background 0.189 568.50 23.84
        Sky 4.988e-04 1.50 1.22
        Dark Current 0.189 567.00 23.81
    Read Out 32.28
Total in selected region 2.601 7,802.70 94.05
Brightest Pixel (single exposure) (at 5159.90 Å) 1.222 916.43
Global Count Rates
    Source only 2,205.319 3,307,978.801
    Background (sky+dark) 28,392.651 42,588,976.18
Encircled energy fraction 0.93

Instrument name: STIS
Mode: spectroscopic
Detector: CCD
Central Wavelength:
Grating: [G430L] R ~ 500
Aperture: 52X0.2
Gain: 1.0
# Frames: 2
Binning: dispersion: 1, spatial: 1
Dark: medium


Target: [point source]
Spectrum: Flat in units of Fλ
Extinction E(B-V): None
Normalization: Renormalized to abmag = 16.5 in filter Sloan/G
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 28.1