WFPC2 ETC for Point Sources

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WFPC2 ETC for Point Sources - v4.0

For details select the colored text. General info. and help.

Object:

Stellar Spectrum:

Magnitude: Spectral type:

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Power Law:

Flux: (erg cm^-2 s^-1 Hz^-1)

Freq./Wave.: (Hz/Ang.) Sp. Index:

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Emission Line:

Line Flux: (erg cm^-2 s^-1)

Line: : (units)

Reddening (color excess): E(B-V):

Sky Background:

Rough estimate: Low Average High

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Detailed Estimate Based on Object Location:

Right Ascension: H M S
(Equinox 2000)

Declination: D ' ''
(e.g. "23 55 31.1" or "-00 05 34.3", omit + signs)

Sun Angle: D (usually 90 degrees) Low Sky?

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User Specified V Magnitude for Sky: mag arcsec^-2

Instrument Configuration:

Configuration: WFC PC A/D Gain: 7 e^-/ DN 14 e^-/ DN

Filter:

If using LRF Filter give desired Central Wavelength: Angstroms

Data Analysis Method:

Optimal PSF Weighting:

Object Location on Pixel: Pixel Center Pixel Corner

Simple Aperture Photometry: Aperture radius: pixels

Exposure:

Enter either S/N or Exposure Time.

Signal to Noise: Exposure Time: Sec.

Please send comments about this form to biretta@stsci.edu.