Result Page

  • The result page consist of three segments:
    • Target stars estimates - list the magnitude estimate of all target and check stars
      • Magnitude estimates are calculated based on differential photometry of the comp stars
      • The FITS header contains information on what filter was used for this image. Thus the software automatically selects which comp star magnitudes to use in the calculations (BVRI)
      • If a clear filter was used you can manually select which band to use
      • The standard deviation based on the individual comp stars is listed. If only one comp star is used, this field is blank
      • The SNR of each target is listed
      • Click the star name link to see details for that measurement. More info here
      • Check star rows are gray. If a check star has been given a magnitude for the current filter, that magnitude is displayed after the name
    • Image summary - lists essential information about the image
    • Comparison stars - lists each comp star used to do the estimates:
      • Star: The name of the comp star. Click link to see details
      • IM: Instrumental magnitude
      • SNR: Signal-to-Noise Ratio
      • SE: Error estimate based on SNR
      • X: X-coordinate of centroid (in pixels)
      • Y: Y-coordinate of centroid (in pixels)
      • D: Distance from center to centroid (in pixels)
      • B, V, R and I: Photometric sequence. These fields can be edited
      • Color: Depends on the filter for this image. For B and V filtered images it is B - V, for R filter it is V - R and for I filter it is V - I
      • Mag: The magnitude estimate of the first target star based on this single comp star
  • The report can be updated if any of the following changes. Click the 'Refresh' button to update:
    • Aperture radius. Applies to all stars. Lets you quickly see the effect of changing aperture size.
    • Wether outliers are to be rejected in the sky annulus. It is recommended that you leave this one on
    • You can change the magnitudes of the comp stars directly in the list. This might be easier than doing it in the image.
  • To add more target or comp stars, click the 'Back to Image' link
  • The report can be saved as a text file by clicking 'Save Report' in the menu.
  • Click the 'Create AAVSO Report' in the menu to create an AAVSO extended format file.
  • The comp star data can be exported directly to Excel for further analysis.

Version 2.0 Copyright © 2008 - BMO Software. All rights reserved

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