[amsat-bb] Re: visual sighting of amateur satellites
hmeyer at clear.net.nz
Wed Nov 5 21:01:39 PST 2008
Hi Steve and Jim,
I well remember seeing Sputnik pass over several times and listening to
the beep, beep , beep from the beacon, which from memory was on around
20MHz. Two ham friends and I sat on my shack roof to observe the passes,
here in Napier, New Zealand.
STeve Andre' wrote:
> On Wednesday 05 November 2008 21:59:59 Jim Danehy wrote:
>> I have often seen the ISS in the evening sky. Its elevation is about 200
>> miles up. It is a fairly large object measuring more than 310 feet
>> wide and
>> 225 feet long. It is about 150 feet in height. It is too big to fit
>> into a
>> football field at 310' x 225'. It is quite the sight. A couple of
>> weeks ago
>> after I worked Richard I saw the ISS by stepping outside. It was a great
>> dark morning and the ISS probably had the brightness on the solar
>> scale of
>> 1. The sun is -27 and the brightest object for us on earth. The -27
>> the bright side ; as you go to a more positive number the object is
>> AO 51 is about 25 cm on a side. That is about the size of a sack of
>> groceries. I do not know the exact height of AO 51 but I know it is
>> than the ISS (200 miles). I think AO 51 is about 250 to 300 miles up.
>> I believe it is impossible to get a visual sighting of something that
>> at that height. There are thousands of objects in orbit around our
>> earth. A
>> bag of groceries at 300 miles up would take more seeing ability than a
>> human set of eyes can provide.
>> Jim W9VNE
> I've often wondered about this--I have no direct knowledge on this, but
> what you say seems reasonable.
> Except that I'm pretty sure that US Air Force people saw Sputnik. Not
> how big it was compared to AO 51.
> The other factor here might be the sun--glinting in the sun, wouldn't
> AO 51
> be far more visable ?
> --STeve Andre'
> wb8wsf en82
> Sent via AMSAT-BB at amsat.org. Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur satellite
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
> No virus found in this incoming message.
> Checked by AVG - http://www.avg.com Version: 8.0.175 / Virus Database:
> 270.9.0/1770 - Release Date: 11/5/2008 5:36 PM
More information about the AMSAT-BB