[Aavso-photometry] IL Aqr /GJ876 extended color sequence

[Aaron Price]

    At AAVSO request, Bruce Gary (GBL) got some transformed all-sky
photometry of the IL Aqr field so we could get some B mags for the 119
comp star.

    If you are doing B photometry of IL Aqr please use 12.956 +/-
0.033 as its B magnitude.  Please note this value _may_ be refined
between now and the official start of the campaign. This does not
include the  faint companion 18" nearby.

    Bruce's full table of colors for the comp stars is below. B
uncertainty is estimated to be 0.033 and V to be 0.022.

         Star            B-mag           V-mag           B-V
         111            11.715          11.038          0.677
         115            12.116          11.461          0.655
         119            12.956          11.912          1.043
         103            10.899          10.347          0.552
        IL Aqr          11.908          10.175         1.733

 The photometry was done with a Celestron CGE-1400 in a prime focus
configuration (2.8
"arc/pixel) under photometric skies and "OK" (good compared to image
scale) seeing in Hereford, AZ.

Aaron





0.033 (BLU) and 0.022 (VIS) mag,
-- 
Aaron