Wednesday, December 25, 2013
A paracord dispenser can be made from a plastic jar by drilling a small hole in the center of the jar lid to then feed the paracord through and finished with a figure eight knot. The full length of the paracord is stuffed foot by foot into the jar which results in tangle free dispensing.
Friday, November 15, 2013
A salsa container and a black plastic coffee can lid pair up well to form an improvised artificial horizon suitable for sextant celestial navigation practice when a sea horizon isn't available. Punch quarter inch holes around the perimeter of the coffee can lid to create a baffling effect that smooths and settles disturbances at the surface. Fill the salsa container to the rim with water then float in the plastic coffee can lid. Tap and spin the lid to remove any bubbles trapped under the lid.
Sunday, October 6, 2013
Friday, September 27, 2013
Sunday, June 2, 2013
Friday, May 3, 2013
Sunday, April 14, 2013
Save this Pub 229 sight reduction calculator file to your laptop desktop to have an on the go anywhere means of performing celestial sight reduction.
(Z) rules to get (Zn) azimuth of body when using the calculator
L.H.A. greater than 180° Zn=Z
L.H.A. less than 180° Zn=360°–Z
L.H.A. greater than 180° Zn=180°–Z
L.H.A. less than 180° Zn=180°+Z