[AZ-Observing] Re: Messier Marathon Site Horizon Profile
- From: Tim Jones <tjmac@xxxxxxxxxxxxxx>
- To: az-observing@xxxxxxxxxxxxx
- Date: Wed, 15 Feb 2012 08:43:49 -0700
Wow, lots lower than my eye would lead one to believe. Sorry for crying wolf
at the meeting :-). Unfortunately, I was thinking about the Antennas site and
the hills to the East rather than the airfield.
Tim
On Feb 15, 2012, at 8:23 AM, Tom Polakis wrote:
> There had to be some measurements out there, and who better to know them than
> Mister GPS himself, Rick Tejera? Several years back, Rick did a survey of
> all of the high points along the local horizon at the Salome Emergency
> Airfield site. He recorded elevations and distances and then did the trig to
> put together the altitude vs. azimuth table below. Since M30 rises at an
> azimuth of roughly 120 degrees, it looks like the elevation of the horizon is
> 1 degree, at worst. This horizon will have no effect on the visibility of
> M30 at dawn. Even with an ideal horizon, you'd never see M30 through that
> first degree of desert horizon crud, anyway.
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