ETC Request ID: STIS.sp.820959

Exposure time (seconds) = 2,469.0000 at wavelength 1300.00 Å

gives: SNR = 45.4701 (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 0.526 2,597.24 50.96
    Background 0.001 5.18 2.28
        Sky 8.434e-15 4.16e-11 6.45e-06
        Dark Current 0.001 5.18 2.28
Total in selected region 0.527 2,602.43 57.12
Brightest Pixel (single exposure) (at 1308.93 Å) 0.185 456.64
Count rate entire detector 18,314.905
Buffer Time (sec) 109.20
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 10,938.240 27,006,515.328
    Background (sky+dark) 157.420 388,670.73
Encircled energy fraction 0.93

Instrument name: STIS
Mode: spectroscopic
Detector: FUVMAMA
Central Wavelength: 1425
Grating: [E140M] R ~ 45800
Aperture: 0.2X0.2
Glow region: low


Target: [point source]
Spectrum: Black body at 36900.0K
Extinction E(B-V): None
Normalization: Flux 3.5e-12 flam at 1300.0 Å
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