Unfiltered All Sky Photometry
	"Using Unfiltered Images to Perform Standard Filter Band Photometry"
			JAAVSO Volume 45 number 1 (2017)
			Joe Garlitz, Elgin, Oregon

	This paper demonstrates that raw instrumental magnitudes of stars measured
	from a single UNFILTERED CCD image can be transformed into standard passband
	magnitudes by using cataloged field stars as reference. 
	
	For well calibrated field stars, the transformations to standard magnitudes
	[eg. B V Rc Ic] can be done with a residual standard deviation of better than 0.021
	magnitude. 

	The paper also presents a simple spreadsheet tool to automatically derive the 
	standard passband magnitudes from the raw instrumental magnitudes. This greatly
	simplifies the task of calculating transformation coefficients of an image.

	View this article Here
	Open Journal  JAAVSO Volume 45 number 1 - 2017 
	
	Download Sample SpreadSheets
		Horizontal Data Table
		Vertical Data Table