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Comparing the 102 CD-ROM set 10X compression
to RealSky 100X compression
RealSky/DSS data copyright
I suggest
you carefully scrutinize these two images. Download them if you like and look at
the RAW data. Look at
each detail for detail, star for star. YES the 100X compression can and
will fall apart and some of the very faint detail is lost however, still pretty
amazing to take 102 CD's down to 18! Also note that astrometry performed on the same star
from each of the two images was nearly identical. These are raw unprocessed
images.
This is NOT TO SAY that there will be limitations using the
$79.00 RealSky product compared to the $1,500.00 102 CD set but RealSky
certainly has its' place!
Please see the RealSky Qualifier for
details. Also note that the 10X compressed version of the entire night sky is
no longer available on 102 CD-ROMS and originally cost $3,500.00 then dropped to
$1,500.00 before the product was taken off the market. Both sets work exactly
the same with TheSky and
CCDSoft or RealSkyView.
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