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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Timing Upper Limb Sunset by Camera
From: Bill B
Date: 2015 Mar 27, 18:48 -0400
From: Bill B
Date: 2015 Mar 27, 18:48 -0400
On 3/26/2015 4:46 PM, Greg Rudzinski wrote: ...Sun's upper limb was on the horizon. > > UT 02:11:53 3/26/2015 Height of eye 50 feet. Where on the California > coast was I about to pirate some grog ? "Nelson's blood" (aka Pusser's rum? My best guess, Los Angeles County, on Rt 1/E. Pacific Coast Highway, just east or near Mulholland Hwy. Perhaps by Leo Carillo State Park. Precisely I get 35d 02!8 N and 118d 56!7 which is a half mile west of the Beach. Problem is the road elevation there is 93 feet. Guess limited by camera input. Data Used: Dec 2d 01!7, GHA 211d 30!0, dip -6.9, refraction -48!8. Hc -58!8. I base this on connecting the dots from time sights at 40N 124 W and 33N 117W then doing a few successive approximations. Followed by a look at Google Earth to find elevations on Rt 1 (my guess of where a bus would travel) that would be 50 ft minus height of eye of your mach one eyeball above the pavement. Have not double checked my work, but wanted be the first to hit the buzzer on "Where is Greg" for $200. BTW did your Zebra pen with Fisher Space Pen refill. Very nice. In terms of grips I located some triangular soft rubber "pencil grips" that I used on Xacto knives in the pre DTP times. Kept them from rolling down the drawing board and into my foot (or worse)and were quite comfortable to boot. Xacto later figured that out and added a polygon piece to the top. http://www.amazon.com/gp/product/B005380XW4/ref=ox_sc_act_title_1?ie=UTF8&psc=1&smid=A2FTQ18NQ2GDBN
