ETC for SPARC4

	A	B	C	D	E	F	G	H
1	Exposure time calculator for SPARC4
2	Aperture fotometry
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4	This version of the SPARC4 ETC is preliminary. It is based on SPARC4 real data and provides conservative error values. An improved version will be made available in the future.
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6	This spreadsheet is not editable. You should make a copy to your GDrive directory using the command below.
7	To copy, use this link: https://docs.google.com/spreadsheets/d/1RuZ94x6VTrChOgz1d7TGancq8qECzbx-pAAwqvTmRSw/copy
8	Downloading this spreadsheet and use it in Excel or Openoffice, for instance, may not work correctly.
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12	Input parameters
13	You should edit this portion of the spreadsheet. Click on the header of each column to obtain the possible options.
14	Magnitude	t_exp (s)	Channel	Mode	Moon Phase	Sky quality	Air Mass	Aperture radius (arcsec)
15	15.0	180.0	2	1.0_1	full	photometric	1.20	1.5
16	Output parameters (only for reference - DO NOT EDIT.)
17	Readout noise	Gain	f_calib	m_sky	Extinction coefficient
18	6.57	3.30	1.50E+09	18.7	0.113
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20	Results of aperture photometry
21	Magnitude error	SNR
22	0.0027	399.74
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24	Results for polarimetry using the half-wave retarder plate			In a conservative approach, for quarter-wave plate adopt an error twice larger.
25	# of waveplate positions	8
26	Polarization error (%)	SNR
27	0.125	1,130.6
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