[amsat-bb] Re: visual sighting of amateur satellites
g.shirville at btinternet.com
Thu Nov 6 02:21:59 PST 2008
Recent TV programmes have pointed out that most reports of Sputnik 1
sightings were actually where people had seen the R7 final stage rocket
body...which was obviously a much bigger object than the spacecraft!
But then, at the age of 9 I convinced myself that I heard its 20Mhz signals
on the family radiogram:)
----- Original Message -----
From: "Hilton Meyer" <hmeyer at clear.net.nz>
To: <AMSAT-BB at amsat.org>
Sent: Thursday, November 06, 2008 5:01 AM
Subject: [amsat-bb] Re: visual sighting of amateur satellites
> 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.
> Hilton ZL2MN
> 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
> 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 program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
More information about the AMSAT-BB