OK, after dropping the amount of coin on the mount, scope, and camera, (my
guess in the neighborhood of $40,000 US) a few hundred bucks for a timing
solution shouldn't be too bad. Would an external NTP box, perhaps a Soekris
Net4501 driven by a Thunderbolt or another GPS receiver with PPS work?
I'm new on this list but This is something I know a little about.
Pointing a telescope acuratly is more then just knowing the time. The
air refracts, or bends the line of sight depending on the angle from
zenith and no matter how strong the structure of the telescope sags
under it's own weight.
Hi,
From: Brooke Clarke bro...@pacific.net
But if the tracking computer had much better time the short run would no
be needed.
Install a NTP on that computer http://www.ntp.org/
Basically, only the 1pps is needed and will discipline the local oscillator.
Bye,
Jean-Louis
Install a NTP on that computer http://www.ntp.org/ Basically, only the 1pps
is needed and will discipline the local oscillator.
Nit pick: You need more than just a PPS to get time. You also need something
else to tell you which second a pulse corresponds to. Most GPS units come
with a
Hi,
From: Hal Murray hmur...@megapathdsl.net
Install a NTP on that computer http://www.ntp.org/ Basically, only the 1pps
is needed and will discipline the local oscillator.
Nit pick: You need more than just a PPS to get time. You also need something
else to tell you which second a pulse
bro...@pacific.net said:
The telescope has around arc second pointing capability so I think he needs
a hundredth of a second or slightly better.
That doesn't sound right. What's the field of view of the telescope?
I've found some NMEA software that will set a PC clock, but it expects
Hal Murray wrote:
bro...@pacific.net said:
The telescope has around arc second pointing capability so I think he needs
a hundredth of a second or slightly better.
That doesn't sound right. What's the field of view of the telescope?
Worst case (declination = 0), 1 arc second of
Hi:
A friend is looking for a low cost GPS receiver to set the clock in the
computer that controls his telescope mount. USB would be nice but is not
a requirement.
For example does eBay item 130456356506 set the computer clock?
This GPS receiver for the Nikon has a mini-USB connector, but when
-Ursprüngliche Nachricht-
Von: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] Im
Auftrag von bro...@pacific.net
Gesendet: Freitag, 26. November 2010 22:43
An: time-nuts@febo.com
Betreff: [time-nuts] USB Low Cost GPS Timing Receiver
Hi:
A friend is looking for a low cost
: Friday, November 26, 2010 3:43 PM
To: time-nuts@febo.com
Subject: [time-nuts] USB Low Cost GPS Timing Receiver
Hi:
A friend is looking for a low cost GPS receiver to set the clock in the
computer that controls his telescope mount. USB would be nice but is not
a requirement.
For example does
bro...@pacific.net said:
A friend is looking for a low cost GPS receiver to set the clock in the
computer that controls his telescope mount. USB would be nice but is not a
requirement.
What sort of accuracy does your friend need?
For example does eBay item 130456356506 set the computer
, 2010 3:43 PM
To: time-nuts@febo.com
Subject: [time-nuts] USB Low Cost GPS Timing Receiver
Hi:
A friend is looking for a low cost GPS receiver to set the clock in the
computer that controls his telescope mount. USB would be nice but is not
a requirement.
For example does eBay item 130456356506 set
@febo.com
Subject: [time-nuts] USB Low Cost GPS Timing Receiver
Hi:
A friend is looking for a low cost GPS receiver to set the clock in the
computer that controls his telescope mount. USB would be nice but is
not
a requirement.
For example does eBay item 130456356506 set the computer clock
: Friday, November 26, 2010 3:43 PM
To: time-nuts@febo.com
Subject: [time-nuts] USB Low Cost GPS Timing Receiver
Hi:
A friend is looking for a low cost GPS receiver to set the clock in the
computer that controls his telescope mount. USB would be nice but is not
a requirement.
For example
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