Meaning of "Sky" value

roe
Affiliation
American Association of Variable Star Observers (AAVSO)
Wed, 10/30/2013 - 03:32

When one looks at the "View Photometry Report" in VPHOT, there is a table with a column headed "Sky."  What is that reporting?

Jim Roe [ROE]

HQA
Affiliation
American Association of Variable Star Observers (AAVSO)
sky value

The sky value in the report is the median value of each sky pixel inside of the sky annulus.

Arne