PixInsight Forum (historical)

PixInsight => Bug Reports => Topic started by: MarkW on 2019 October 22 04:13:33

Title: Parsing sexagesimal error
Post by: MarkW on 2019 October 22 04:13:33

I've searched previous post on this and it doesn't actually say if its something that affects the processing or if it can be ignored. I never got this error when processing the images before the last update. But today I decided to reprocess them all as I wasn't happy with the noise I now get the following on my flat frames


F:/Altair 183m images/Wizard Neb re done/processed/calibrated/flat/2019-09-13_231211_NGC7380-Wizard Nebula_1.83sec_1x1__frame3_Ha_Flat_c.xisf
Loading image: w=5440 h=3648 n=1 Gray Float32
51 FITS keyword(s) extracted.
*** Error: Parsing SITELAT FITS keyword: Parsing sexagesimal expression: Parsing integer expression: conversion error:
53d13m7.290s
..^
*** Error: Parsing SITELONG FITS keyword: Parsing sexagesimal expression: Parsing integer expression: conversion error:
1d7m55.140s
.^
Computing image statistics: done
Weight          :     1.00000

F:/Altair 183m images/Wizard Neb re done/processed/calibrated/flat/2019-09-13_231221_NGC7380-Wizard Nebula_1.83sec_1x1__frame4_Ha_Flat_c.xisf
Loading image: w=5440 h=3648 n=1 Gray Float32
51 FITS keyword(s) extracted.
*** Error: Parsing SITELAT FITS keyword: Parsing sexagesimal expression: Parsing integer expression: conversion error:
53d13m7.290s
..^
*** Error: Parsing SITELONG FITS keyword: Parsing sexagesimal expression: Parsing integer expression: conversion error:
1d7m55.140s
.^
Computing image statistics: done
Weight          :     1.00000

F:/Altair 183m images/Wizard Neb re done/processed/calibrated/flat/2019-09-13_231230_NGC7380-Wizard Nebula_1.83sec_1x1__frame5_Ha_Flat_c.xisf
Loading image: w=5440 h=3648 n=1 Gray Float32
51 FITS keyword(s) extracted.
*** Error: Parsing SITELAT FITS keyword: Parsing sexagesimal expression: Parsing integer expression: conversion error:
53d13m7.290s
..^
*** Error: Parsing SITELONG FITS keyword: Parsing sexagesimal expression: Parsing integer expression: conversion error:
1d7m55.140s
.^

Title: Re: Parsing sexagesimal error
Post by: Juan Conejero on 2019 October 22 07:15:58

These FITS keywords are incorrect. The same issue has been reported many times on this forum:

https://pixinsight.com/forum/index.php?topic=13638.0
https://pixinsight.com/forum/index.php?topic=13674.0
https://pixinsight.com/forum/index.php?topic=14020.0

Please note that this is not a bug in PixInsight. It is a bug in the software that has created these keywords with incorrect values.

These errors are not fatal, so you can still integrate the frames. However, metadata for geodetic observer coordinates will be lost in the integrated image (which is not really important for flat frames).

Title: Re: Parsing sexagesimal error
Post by: MarkW on 2019 October 22 12:33:16

Thank you for that. I did say in my original post I had searched and found post on this. I just wanted to clarify if it affects processing , which you have now done , thank you. The only strange thing I mentioned was that I never got this message before the recent upgrade, using the same file set that's all

Title: Re: Parsing sexagesimal error
Post by: pfile on 2019 October 22 16:23:11

i think the warning message is new in the latest 2 versions of PI because now PI has built-in astrometry and the location of the observation is important for astrometry.

rob