Specifications

AUTOSTAR CCD PHOTOMETRY 95
Plans and Further Details
Details of light box construction are shown in the photographs
following, and a suggested layout plan may be seen on the HPO
web pages. (URL: http://www.hposoft.com/Astro/astro.html ) A
web search on “CCD light box flats” will yield a number of
examples of light boxes successfully used in CCD imaging that
will be useful for photometry. The details of setting exposures in
each filter band, imaging flats, and using the flat field files for
calibration are given in other sections of this book.
HPO Light Box
The following photographs and description illustrates the
construction of a flat field light box in use at the Hopkins Phoenix
Observatory (HPO), installed on a 12 inch (30.5 cm) aperture
Meade LX200 GPS telescope.
Construction material was ordinary thick cardboard, cut and taped
into a simple box painted white on the inside to reflect and diffuse
the light, and black on the outside, to waterproof it against dew.
(Fig. H-1.)
Figure H-1. Interior Construction of HPO Light Box.