archive: SETI Argus: Univ. of Indianapolis webpage down

SETI Argus: Univ. of Indianapolis webpage down

Larry Klaes ( )
Mon, 17 May 1999 11:09:30 -0400

>Date: Sat, 15 May 1999 18:46:39 -0500
>From: "Malcolm C. Mallette" <>
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>To: Argus Closed List <>,
> Society of Amateur Radio Astronomers <>,
> radio astronomy list <>
>Subject: Argus: Univ. of Indianapolis webpage down
>The Webpage of Radio Astronomy at the University of Indianapolis is
>down. The reason is that the fiber optic lan lines are being redone as
>part of the renovation of Lilly Science Hall. This should be done
>sometime next week.
>You may be interested to know that Miteq has a moderate cost cyrogenic
>(supercooled) LNA available for only $20,000.00 This is a breakthrough
>in supercooled LNAs. The price is due to the fact that it is a $5000
>LNA and a $15,000 liquid hydrogen cooling unit... The price of the
>cooling unit may drop sharply as volume goes up.
>As our initial observations indicate that a small dish does not have
>anything like 55% efficiency ( or effective area ) groups interested in
>RA or SETI may wish to band together to obtain or construct larger
>dishes, which would merit the use of the Miteq supercooled LNA. We are
>investigating the boresight aiming of the feedhorn, the lnb and the
>position with respect to the focal length. There is no indication that
>anything fixable is wrong, however, it is best to be certain. In any
>case, the larger the dish the better for RA. The larger the dish the
>better for SETI, up to the point that an all sky survey has a dish that
>has range extending out of our spiral arm of the galaxy ( where there
>are few stars per unit of space ) at the cost of a very narrow beamwidth
>inside the spiral arm, where there are lots of stars per unit of space.
>Malcolm Mallette