NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Star CN with DSLR Camera
From: Wolfgang Hasper
Date: 2016 Jan 28, 17:34 +0100
Attached File:
(f1-35mm-Super-Takumar-Cheat-Card.jpg: Open and save)
From: Wolfgang Hasper
Date: 2016 Jan 28, 17:34 +0100
As re the digital CN options:
Has anyone ever considered something like this
https://www.panono.com/product/how-it-works
creates all-around image that could be processed to recognize the sea horizon as well as a large number of celestial bodies.
And the total number of pixels is large. Calibration shots at known locations from time to time.
https://www.panono.com/p/AMxiBal5dbOt
And without IR filters the sensors should work well for stars at night.
Just a thought...
Wolfgang
Gesendet: Donnerstag, 28. Januar 2016 um 17:19 Uhr
Von: "Greg Rudzinski" <NoReply_Rudzinski@fer3.com>
An: wolfgang.hasper@web.de
Betreff: [NavList] Re: Star CN with DSLR Camera
Von: "Greg Rudzinski" <NoReply_Rudzinski@fer3.com>
An: wolfgang.hasper@web.de
Betreff: [NavList] Re: Star CN with DSLR Camera
Bill,
If you would like to work through the example image then here are the givens:
Time 00:41:47 UT 8/24/2015
Camera image time 16:41:47 8/23/2015 ZD +8 PST (not summer PDT)
A.P. Lat. 34° 10' N Lon. 119° 14' W
Pixel count 2401 (by Windows Paint)
.56(2401 px)=1344.6'=22° 24.6'° (see calibration card attached, .56 is 35mm lens calibration multiplier)
Pixel corr. - 2.5' (see calibration card attached at 2401 px)
Hs = 22° 22.1'
Height of Eye 7ft. -2.6'
Refraction -2.3'
Ho = 22° 17.2'
Hc = 22° 18.9'
intercept 1.7' away
azimuth 268.7°
Greg Rudzinski
Attached File:
(f1-35mm-Super-Takumar-Cheat-Card.jpg: Open and save)
