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    Re: An artificial horizon opportunity?
    From: Paul Dolkas
    Date: 2017 Jan 28, 14:51 -0800

    You can get really thick gear oil (SAE 80 wt or even SAE 140 wt). Stuff is really thick, almost like honey. I used to use it for an AH before I got a bubble sextant. Would take quite a breeze to put ripples in it.

     

    Paul Dolkas

     

    From: NavList@fer3.com [mailto:NavList@fer3.com] On Behalf Of Bill Lionheart
    Sent: Saturday, January 28, 2017 7:59 AM
    To: paul@dolkas.net
    Subject: [NavList] Re: An artificial horizon opportunity?

     

    I found "baby oil" ie mineral oil a clear distillate of paraffin oil
    but easily obtainable in pharmacists,a bit better than water as it is
    a little more resistant to ripples (is that due to viscosity?). I pour
    it in to a black plastic tray.
     
    Bill
     
    On 28 January 2017 at 00:28, Alan S  wrote:
    > for shots with an AH, I use a dish of water, with some sun/wind shades in
    > the parking area of the apartment complex we reside at. It has worked quite
    > well,with my calculated position being within a couple of miles of GPS
    > position most of the time.
    > 
    > Alan
    > 
    > View and reply to this message
     
     
     
    --
    Professor of Applied Mathematics
    http://www.maths.manchester.ac.uk/bl

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