Also, look at these prior posts:
http://www.fer3.com/arc/m2.aspx?i=104304&y=200712http://www.fer3.com/arc/m2.aspx?i=104310&y=200712Also remember (very important) do not apply a semi-diameter correction when using a bubble sextant since you are measuring to the center of the sun or of the moon. If using the Navy website to do the computation back out
the S.D. correction and use only the refraction correction 9you can ignore the parallax correction.)
gl
On 9/10/2010 6:41 AM, Dave Harwood wrote:
>
> Frank, I'll use this moment as my opportunity to step out of the shadows and become a NavList contributor. First, some personal info: I'm active duty Air Force currently stationed in Okinawa. Several years ago I took an interest in Cel Nav after reading South by Sir Ernest Shackleton. After reading a few books on the subject, countless Google searches and a lot of time spent at the beach, I've taught myself to consistently plot a fix within 4-5 miles of my known position with a Davis Mark 15. I've recently completed the ASA 101 and 103 (104 scheduled for Oct) sailing courses and have put some of my skills to use. Up to this point I've simply been an observer of NavList. Not because I intend to simply plunder its resources without giving something in return, but because I
didn't believe I could contribute much to the conversation at my level. I've come a long way and I'm ready to jump in!
> Enough about me already, I'll get to the point:
> My interest has now taken me into the realm of air navigation. I purchased an A-10A online and, not so surprisingly, found it to be seized. With the help of Bill Morris's manual I've successfully restored this unit and I would like to learn more about its use. I do not intend to hijack this thread, however, in their absence I'll keep it going.
> Could someone detail its proper use and the process involved in an airborne fix? I have a copy of the Air Almanac (although a 2011) and plenty of opportunities to use it while airborne.
> Also, how should I go about establishing its accuracy (e.g. index error)?
> Thanks for any help that can be offered,
> Dave Harwood
>
>
>
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