NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Doug MacPherson
Date: 2013 May 22, 07:08 -0700
Sent from my iPhone
The attached image of the Moon and Spica was taken UT 3:47:25 5/22/2013
from 34° 10.4' N 119° 13.8' W using a 200mm fixed prime lens on a Canon Rebel 10 MP body.
Settings: ISO 800, 1/500 sec., F 8, infinite focus.
Measured pixels 2476 at .0975 minutes of arc per pixel for 4° 1.4' Hs
Lunar error -0.4'This is my first camera star lunar. The Moon is filtered using a pair of linear polarizers held out in front of the camera lens. The star is unfiltered. iPhoto electronic dark room adjustments were necessary to enhance and draw out the star and sharpen the Moon's limb.
Greg Rudzinski
----------------------------------------------------------------
NavList message boards and member settings: www.fer3.com/NavList
Members may optionally receive posts by email.
To cancel email delivery, send a message to NoMail[at]fer3.com
----------------------------------------------------------------
Attached File:
Attached File:
Attached File:
