<s>
Astronomical	B-Application
Image	I-Application
Processing	I-Application
System	I-Application
++	O
is	O
a	O
software	O
package	O
whose	O
development	O
was	O
started	O
in	O
the	O
early	O
nineties	O
,	O
written	O
almost	O
entirely	O
in	O
C++	B-Language
,	O
and	O
which	O
initial	O
goal	O
was	O
to	O
replace	O
the	O
by	O
then	O
already	O
aging	O
AIPS	B-Application
software	O
.	O
</s>
<s>
The	O
project	O
was	O
originally	O
an	O
effort	O
by	O
several	O
astronomical	O
institutes	O
together	O
in	O
a	O
consortium	O
,	O
the	O
Australia	O
Telescope	O
National	O
Facility	O
(	O
ATNF	O
)	O
,	O
the	O
Jodrell	O
Bank	O
Observatory	O
(	O
JBO	O
)	O
and	O
the	O
MERLIN/VLBI	O
National	O
Facility	O
(	O
MERLIN/VLBI	O
)	O
,	O
the	O
Berkeley-Illinois-Maryland	O
Association	O
(	O
BIMA	O
)	O
,	O
the	O
National	O
Radio	O
Astronomy	O
Observatory	O
(	O
NRAO	O
)	O
and	O
the	O
Netherlands	O
Foundation	O
for	O
Research	O
in	O
Astronomy	O
ASTRON	O
.	O
</s>
<s>
AIPS++	B-Language
provides	O
facilities	O
for	O
calibration	O
,	O
editing	O
,	O
image	O
formation	O
,	O
image	O
enhancement	O
,	O
and	O
analysis	O
of	O
images	O
and	O
other	O
astronomical	O
data	O
.	O
</s>
<s>
Although	O
the	O
tools	O
provided	O
in	O
AIPS++	B-Language
are	O
mainly	O
designed	O
for	O
processing	O
data	O
from	O
varieties	O
of	O
radio	O
telescopes	O
,	O
the	O
package	O
is	O
expected	O
to	O
also	O
be	O
useful	O
for	O
processing	O
other	O
types	O
of	O
astronomical	O
data	O
and	O
images	O
.	O
</s>
<s>
However	O
,	O
the	O
reduction	O
of	O
most	O
data	O
from	O
imaging	O
array	O
detectors	O
is	O
performed	O
using	O
IRAF	B-Application
instead	O
.	O
</s>
<s>
AIPS++	B-Language
is	O
structured	O
as	O
a	O
library	O
of	O
tools	O
at	O
the	O
lower	O
levels	O
,	O
designed	O
to	O
replace	O
AIPS	B-Application
of	O
more	O
monolithic	O
applications	O
.	O
</s>
<s>
In	O
general	O
,	O
the	O
counterpart	O
of	O
an	O
AIPS	B-Application
task	O
is	O
an	O
AIPS++	B-Language
tool	O
function	O
,	O
although	O
the	O
toolkit	O
structure	O
of	O
AIPS++	B-Language
will	O
generally	O
mean	O
that	O
these	O
functions	O
are	O
more	O
fine-grained	O
,	O
except	O
for	O
the	O
more	O
integrated	O
tools	O
at	O
the	O
higher	O
levels	O
(	O
such	O
as	O
map	O
)	O
.	O
</s>
<s>
The	O
counterparts	O
of	O
AIPS	B-Application
adverbs	O
are	O
the	O
parameters	O
of	O
AIPS++tool	O
functions	O
.	O
</s>
<s>
The	O
command-line	O
interpreter	O
in	O
AIPS	B-Application
is	O
POPS	O
,	O
while	O
the	O
counterpart	O
in	O
AIPS++	B-Language
is	O
Glish	O
.	O
</s>
<s>
The	O
code	O
used	O
as	O
standard	O
in	O
most	O
astronomical	O
institutes	O
is	O
still	O
AIPS	B-Application
,	O
as	O
AIPS++	B-Language
is	O
usually	O
not	O
yet	O
considered	O
sufficiently	O
reliable	O
and	O
usable	O
.	O
</s>
<s>
On	O
August	O
25	O
,	O
2004	O
the	O
AIPS++	B-Language
code	O
base	O
was	O
re-organized	O
to	O
a	O
more	O
modular	O
structure	O
;	O
since	O
then	O
it	O
is	O
referred	O
to	O
as	O
CASA	O
(	O
"	O
Common	O
Astronomy	O
Software	O
Applications	O
"	O
)	O
.	O
</s>
<s>
CASA	O
consists	O
of	O
a	O
suite	O
of	O
C++	B-Language
libraries	O
derived	O
from	O
the	O
original	O
AIPS++	B-Language
tasks	O
.	O
</s>
<s>
The	O
core	O
of	O
the	O
old	O
AIPS++	B-Language
libraries	O
,	O
now	O
known	O
as	O
are	O
still	O
being	O
maintained	O
and	O
developed	O
by	O
the	O
original	O
consortium	O
members	O
.	O
</s>
