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Below are CCD images taken first without and then with an
IDAS LPS filter (smaller images are the corresponding
flat field frames). These images were taken by Mr. G. Tomita
from the heavily light-polluted Tokyo metropolitan area.
using an SBIG ST-8E CCD camera coupled to a Pentax
125SDHF (125mm objective, 800mm focal length) refractor.
Note the improved detail in the faint areas of M27 when
the IDAS LPS filter is used.
Right - flat field frame, no filter Below - flat field frame corrected image, no filter
Right - flat field frame, IDAS LPS filter Below - flat field frame corrected image, IDAS LPS filter
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Copyright 1999-2002 by Hutech Corporation and ScienceCenter.Net For technical difficulties with this site email: hutech-web@sciencecenter.net
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