NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Eye problems and IE, IC
From: Bill B
Date: 2006 Jul 14, 18:39 -0500
The scatter in the right eye data was not to my liking, so I redid the
observations today as close to the time of the first observation as cloud
cover would permit. I include many more horizontal observations so a single
entry would not skew the average to the extent it could with only 5
observations.
Order of observations: Observations were done in batches. Vertical on the
arc, horizontal on the arc handle down, horizontal on the arc handle up,
horizontal off the arc handle down, horizontal off the arc handle up, and
vertical off the arc.
5-minutes breaks were taken at the first sign of fatigue. White was worn
;-)
My conclusion stands that gravity working on the frame and/or mirrors in the
horizontal position is not responsible for the shift from vertical to
horizontal, but rather eye differences. These eye differences can be noted
in the vertical shots as well.
14 July, 2006
Right eye 15:35 to 16:10 EDT
Hc 61d to 56d
Key:
VON (vertical on the arc)
VOF (vertical off the arc)
HUDON (horizontal on the arc)
HUDOF (horizontal of the arc)
STDV (standard deviation)
RIGHT EYE
Vertical Vertical Horiz Horiz
On Arc Off arc On Arc Off Arc
31.4 28.4 32.0 HU 29.0 HU
31.5 28.4 32.0 HU 29.1 HU
31.5 28.5 32.1 HU 29.1 HU
31.4 28.3 32.0 HU 29.1 HU
31.3 28.3 32.0 HU 28.9 HU
31.6 28.2 32.1 HU 29.1 HU
31.5 28.42 32.2 HU 29.0 HU
31.5 28.52 32.1 HU 28.9 HU
---- ----- 32.0 HD 29.0 HD
---- ----- 32.0 HD 28.9 HD
---- ----- 32.1 HD 28.9 HD
---- ----- 32.2 HD 28.8 HD
---- ----- 32.1 HD 29.0 HD
---- ----- 32.2 HD 28.8 HD
---- ----- 32.1 HD 28.8 HD
---- ----- 32.2 HD -------
---- ----- 32.0 HD -------
---- ----- 32.0 HD -------
Mean Standard Deviation
VON 31.46' 0.092'
VOF 28.375' 0.095'
60-VOF 31.625' -----
HUDON 32.06' 0.079'
HUDOF 28.96' 0.115'
60-HUDOF 31.02' -----
TARGET 4SD: 63.2'
Vertical 4SD: 63.09
Horizontal 4SD: 63.10
IE Vert: 0.08' Off
IE Hor: 0.51' On
======================================
FOR COMPASION, JULY 13 RESULTS
RIGHT EYE
Vertical Vertical Horiz Horiz
On Arc Off arc On Arc Off Arc
31.3 28.4 32.2 HU 29.0 HU
31.5 28.4 32.2 HD 29.0 HD
31.4 28.5 31.9 HU 29.0 HU
31.4 28.3 32.6 HD 28.9 HD
31.2 28.6 32.4 HU 29.0 HU
31.3 28.4 ------- -------
31.4 28.44 ------- -------
Mean Standard Deviation
VON 31.36' 0.098'
VOF 28.43' 0.095'
60-VOF 31.57' -----
HUDON 32.26' 0.26'
HUDOF 28.98' 0.045'
60-HUDOF 31.02' -----
TARGET 4SD: 63.2'
Vertical 4SD: 62.93
Horizontal 4SD: 63.28
Vertical IE: 0.11' Off
Horizontal IE: 0.62' On
===================================
RECAP WITH JULY 14 RIGHT EYE DATA
& JULY 13 LEFT EYE DATA
LEFT EYE RIGHT EYE DIFF
VON 31.91' 31.46 0.45'
VOF 31.04' 31.625' -0.585
HUDON 31.38' 32.06' -0.68
HUDOF 31.61' 31.04' 0.57
JULY 13 RECAP FOR COMPARISON
LEFT EYE RIGHT EYE DIFF
VON 31.91' 31.36 0.55'
VOF 31.04' 31.57' -0.53
HUDON 31.38' 32.26' -0.98
HUDOF 31.61' 31.02' 0.59
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From: Bill B
Date: 2006 Jul 14, 18:39 -0500
The scatter in the right eye data was not to my liking, so I redid the
observations today as close to the time of the first observation as cloud
cover would permit. I include many more horizontal observations so a single
entry would not skew the average to the extent it could with only 5
observations.
Order of observations: Observations were done in batches. Vertical on the
arc, horizontal on the arc handle down, horizontal on the arc handle up,
horizontal off the arc handle down, horizontal off the arc handle up, and
vertical off the arc.
5-minutes breaks were taken at the first sign of fatigue. White was worn
;-)
My conclusion stands that gravity working on the frame and/or mirrors in the
horizontal position is not responsible for the shift from vertical to
horizontal, but rather eye differences. These eye differences can be noted
in the vertical shots as well.
14 July, 2006
Right eye 15:35 to 16:10 EDT
Hc 61d to 56d
Key:
VON (vertical on the arc)
VOF (vertical off the arc)
HUDON (horizontal on the arc)
HUDOF (horizontal of the arc)
STDV (standard deviation)
RIGHT EYE
Vertical Vertical Horiz Horiz
On Arc Off arc On Arc Off Arc
31.4 28.4 32.0 HU 29.0 HU
31.5 28.4 32.0 HU 29.1 HU
31.5 28.5 32.1 HU 29.1 HU
31.4 28.3 32.0 HU 29.1 HU
31.3 28.3 32.0 HU 28.9 HU
31.6 28.2 32.1 HU 29.1 HU
31.5 28.42 32.2 HU 29.0 HU
31.5 28.52 32.1 HU 28.9 HU
---- ----- 32.0 HD 29.0 HD
---- ----- 32.0 HD 28.9 HD
---- ----- 32.1 HD 28.9 HD
---- ----- 32.2 HD 28.8 HD
---- ----- 32.1 HD 29.0 HD
---- ----- 32.2 HD 28.8 HD
---- ----- 32.1 HD 28.8 HD
---- ----- 32.2 HD -------
---- ----- 32.0 HD -------
---- ----- 32.0 HD -------
Mean Standard Deviation
VON 31.46' 0.092'
VOF 28.375' 0.095'
60-VOF 31.625' -----
HUDON 32.06' 0.079'
HUDOF 28.96' 0.115'
60-HUDOF 31.02' -----
TARGET 4SD: 63.2'
Vertical 4SD: 63.09
Horizontal 4SD: 63.10
IE Vert: 0.08' Off
IE Hor: 0.51' On
======================================
FOR COMPASION, JULY 13 RESULTS
RIGHT EYE
Vertical Vertical Horiz Horiz
On Arc Off arc On Arc Off Arc
31.3 28.4 32.2 HU 29.0 HU
31.5 28.4 32.2 HD 29.0 HD
31.4 28.5 31.9 HU 29.0 HU
31.4 28.3 32.6 HD 28.9 HD
31.2 28.6 32.4 HU 29.0 HU
31.3 28.4 ------- -------
31.4 28.44 ------- -------
Mean Standard Deviation
VON 31.36' 0.098'
VOF 28.43' 0.095'
60-VOF 31.57' -----
HUDON 32.26' 0.26'
HUDOF 28.98' 0.045'
60-HUDOF 31.02' -----
TARGET 4SD: 63.2'
Vertical 4SD: 62.93
Horizontal 4SD: 63.28
Vertical IE: 0.11' Off
Horizontal IE: 0.62' On
===================================
RECAP WITH JULY 14 RIGHT EYE DATA
& JULY 13 LEFT EYE DATA
LEFT EYE RIGHT EYE DIFF
VON 31.91' 31.46 0.45'
VOF 31.04' 31.625' -0.585
HUDON 31.38' 32.06' -0.68
HUDOF 31.61' 31.04' 0.57
JULY 13 RECAP FOR COMPARISON
LEFT EYE RIGHT EYE DIFF
VON 31.91' 31.36 0.55'
VOF 31.04' 31.57' -0.53
HUDON 31.38' 32.26' -0.98
HUDOF 31.61' 31.02' 0.59
--~--~---------~--~----~------------~-------~--~----~
To post to this group, send email to NavList@fer3.com
To , send email to NavList-@fer3.com
-~----------~----~----~----~------~----~------~--~---
