WFPC2 ETC for Extended Sources - v4.0

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WFPC2 ETC for Extended Sources - v4.0

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

Stellar Spectra:

Surf. Brightness: (mag. arcsec^-2)

Spectral Type:

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

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

Sp. Index:

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Emission Line:

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

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: Ang.

Exposure: Enter either S/N or Exposure Time.

Signal to Noise (per pixel):

Exposure Time: Sec.

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