Michael, that it the $1,000,000 question. Why is a cheep cell phone smarter than expensive telescope mounts?
Sent from my Boost Mobile Phone.
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-------- Original message --------
From: Michael Herman <mherman346@...>
Date: 1/15/20 1:19 PM (GMT-06:00)
Subject: Re: [Losmandy_users_io] Initial Setup of the Mount
These days, you might get good luck using a cellphone GPS app.??
They are amazing for showing the correct orientation not depending on magnetic field lines at all.??
Also the app will give the correct Latitude and Longitude.? If the app is installed, it doesn't need cellphone network access to work (the phone has GPS detection off line).
Have fun,
Michael??
On Wed, Jan 15, 2020, 9:37 AM crocco1250 via Groups.Io <crocco1250=
[email protected]> wrote:
Derek
I have an old manual that makes the fact that magnetic and polar north are not aligned everywhere.?? The earth's core generates a magnetic field that wanders (there was an article recently showing wandering at a rate of several feet a week,? if
I remember correctly) so you align your compass to magnetic north then make a correction based on the latest geomagnetic map.?? So,? in my area, I note magnetic north then move the compass left or right by the offset degrees for my area.?? If you want,? I'll
dig it out and and post it here
Chuck
On Wednesday, January 15, 2020 Derek C Breit <[email protected]> wrote:
This is for anyone who regularly ¡°goes mobile¡± to do Astrophotography.. How do *you* determine
how to initially place the tripod??
?
I envision putting the mount in the center of the Azimuth adjustment range, but when you
go to a location you have never been before, how do you determine where the tripod should be pointing?? I would be seriously bummed if I assemble the whole system, tried to polar align, and run out of adjustment so that I would have to disassemble and rotate
the tripod..
?
Can you just place a compass on the tripod and use that, taking magnetic declination into
account?? I would think the metal in the tripod would make the compass inaccurate??
?
Anywho.. I would like to know the various methods people use..
?
Derek
