The two datasets that were used to create the Heritage
image of NGC 6093 had similar but not identical
images. Aside from imaging opposite sides of the
globular cluster, one data set had a longer exposure
of the filter F439W than the other dataset. Also,
the reddest filter of each group were not exactly
the same wavelength, although close enough to make
the three color image.
F439W - 600 seconds
F439 - 60 seconds
Combining the two pointings to make
one image:
1). Create a color image of each data
set of three filters
2). Align the two pointings
3). Adjust the colors to be consistent
4). Rotate for optimal display
The background noise shows
evidence of the two separate pointings.
The final Heritage image
of NGC 6093 shows smooth consistent star
colors.