NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Marcel Tschudin
Date: 2011 Sep 28, 20:21 +0300
Marcel
Taking a round of stars with a DSLR camera is possible. Yesterday evening between civil and nautical twilight an image of Antares (mag 1.0) was successfully taken using settings of ISO 1600, F2, 1/60 sec, raw, 10MP, infinite focus with a prime 50mm fixed lens. To get a useable image for pixel counting it was necessary to adjust exposure, noise, and contrast by iPhoto editing. Sight reduction was performed on two images using a palm program giving 0.7' away and 1.8' toward.
This was my first effort using a 1.0 magnitude star which means that 18 of the 57 navigational stars are bright enough for a DSLR camera that is set to ISO 1600.
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
----------------------------------------------------------------
