Author
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Topic: Sight Analyzer in Starpilot 89
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Herman
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posted December 28, 2016 02:12 PM
Problem after using sight-analyzert the result gives WT one hour lower then the inputted sight times. To be sure that there are no remaing errors in the system I complete uninstalled and reinstalled Starpilot on the TI-89. 2ND var-link spuninst ) 1,1, 0 2ND var-link spsetup ) Settings Date 20-12-2016 DR 51o 18' N 080 32' E More Settings More Settings ZD -1 WE 0 3. Sight reduction (I used 3 sights off Vega = Starno 49) 1: WT 17:53:24 Hs= 390 52' 2: WT 17:55:13 Hs= 390 34' 3: WT 17:56:38 Hs= 390 06' IC=0 He=0 Sight Analyser 5. Course Speed Speed DR Time 17:56:38 Course 0, Speed 0. 6.Analyze DR 51.18 N 08.32 E Shifted line E voila unfortunate WT= 16:55:01 Hs 390 31,2 Control: I did the same excercise in Starpilot PC That came with the correct time 17 hour. So there is definitly something wrong in the displayed WT in the Starpilot T_89 program Strange that nobody has had this before?
From: Holland
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Capt Steve Miller
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posted December 28, 2016 06:46 PM
- posted December 28, 2016 05:45 PM Profile for Capt Steve Miller Edit/Delete Post I have looked at your data and I have an observation: You indicate your Longitude is 80° 32' E and then indicate you ZD is -1. If the Longitude is correct then the ZD should be -5.
Using the data you supplied I got the following intercepts and ZNs Sight #1 2068 miles @ 332.8°T Sight #2 2057 miles @ 333.1°T Sight #3 2035 miles @ 333.4°T
Then later I see the Longitude at 8° 32' E) if that is correct then the ZD would be -1.
Using the new position data (8° 32' E you supplied and using ZD -1 I got the following intercepts and ZNs Sight #1 12.9 miles @ 285.5°T Sight #2 11.4 miles @ 285.8°T Sight #3 -3.8 miles @ 286.0°T
Please verify the data.
When I looked at the analysis I did not see any time indicated. Clicking on individual sights in the analysis the correct time, Hs, etc are there.
From: Starpath
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Herman
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posted December 29, 2016 04:54 AM
Hello Steve,
The confusion about the longitude is because i think the degree sign has change to 0. But it must be 08 degr 32 min. You are correct if you put the cursor on a sight TI-89 gives the WT time of that #sight. But if you put the cursor not on a #sight then push the enter button you get a screen with for instance the text: [ENTER] to move line [Esc] back to plot WT/Hs' 016:55:01 039degr29.0min And ther the time is one hour to low.
If have found one other strange value in TI-89 but That is for one later post. Regards HermanD
From: Holland
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Capt Steve Miller
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posted December 29, 2016 12:06 PM
Hello, I do see what you are talking about the time being 1 hour lower. I will check this out further now that I see what you are talking about.
From: Starpath
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Capt Steve Miller
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posted December 29, 2016 12:35 PM
It does appear that there is a bug in the StarPilot-89 program in this area. I ran the sights using a ZD of +1 and I saw that in the Analysis page that the time to move to was one hour greater than the sight times. I ran the sights again using ZD 0 and the Analysis page had the correct sight times.
Thus, as a possible work around use UTC for the times of the sights instead of your watch time. You would then be using ZD 0 and the time would not change on the Analysis page.
From: Starpath
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Herman
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posted December 29, 2016 01:30 PM
Hello Steve, I am glad that you agree there is a bug in the TI-89 program. Only strange that no one has complained before about this.
When I have time I post the other problem in the TI-89 program.
Regards, HermanD
From: Holland
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