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Typos / Omissions in Tom Cunliffe's "Celestial Navigation" book?
From: Greg R_
Date: 2008 Jun 23, 19:30 -0700
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From: Greg R_
Date: 2008 Jun 23, 19:30 -0700
Since some of us have been in a manual
sight-reduction/plotting mode lately, I've been re-visiting a lot of my basic
celnav texts. When I got to Tom Cunliffe's otherwise fine "Celestial Navigation"
book, I found some notes in the margins (that I'd made some time ago) about
possible typos and/or omissions. I was on jury duty today, so thought I'd spend
the time wisely and check my notes (and re-work the examples as necessary) - and
I'm still convinced that my original notes were correct.
If anyone has the same copy (1989 edition) and
feels motivated, I'd definitely appreciate a second opinion on what I've found
(and if anyone has a later edition, maybe they corrected these in a later
edition?). I Googled "Cunliffe" and "typos" but
didn't turn up anything useful. Also e-mailed the author via his website, but
haven't heard back yet.
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Pg. 18
Case 1 - Example
GHA for 16h = 60° 43.9' (vs. 60° 43.7')
Case 2 - Example
No Increments/Corrections page provided for 16m (only 14m and 15m)
Case 3 - Example
"Your longitude is 110°" ("E" designator missing)
Case 4 - Example
No Increments/Corrections page provided for 17m (only 14m and 15m)
Pg. 40 - Example
d correction calculation - Tabulated Hc = 46° 57' (vs. 47° 47' - he had it correct 2 paragraphs prior, but apparently was transcribed wrong in the d correction calculation). The final Hc value appears to be correct.
Pg. 47 - Venus sight
Case 1 - Example
GHA for 16h = 60° 43.9' (vs. 60° 43.7')
Case 2 - Example
No Increments/Corrections page provided for 16m (only 14m and 15m)
Case 3 - Example
"Your longitude is 110°" ("E" designator missing)
Case 4 - Example
No Increments/Corrections page provided for 17m (only 14m and 15m)
Pg. 40 - Example
d correction calculation - Tabulated Hc = 46° 57' (vs. 47° 47' - he had it correct 2 paragraphs prior, but apparently was transcribed wrong in the d correction calculation). The final Hc value appears to be correct.
Pg. 47 - Venus sight
With an assumed longitude (ALong) =
15° 11.7'W, I get an LHA = 84° (don't understand why he used 15°
12.5'W as the ALong, much less how he gets an LHA of 89° out of
it). There isn't a page for 48° Latitude in the book (and I don't have tables
for that latitude either), so I can't verify the rest of his
worksheet.
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GregR
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