Author Topic: PixInsight Core 01.08.06.1475 Ripley (x64) MAC error Parsing SITELAT FITS keywor  (Read 458 times)

Offline ghealey56

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Hi I have just updated my MAC to 01.08.06.1475 and get this error with batch pre processing. Same parameters on 01.08.06.1457 Win 10 does not produce the error. Any suggestions appreciated.

MAC OS Mojave 10.14.4 PixInsight Core 01.08.06.1475 Ripley (x64)

[2019-05-20 14:59:40] /Volumes/All My Documents/Astrophotography/Dec 2018 onwards/Calibration Frames 1600FW data/Bias/Target 1_0.0001sec_1x1_Bias_frame1.fit
[2019-05-20 14:59:40] Reading FITS image: 16-bit integers, 1 channel(s), 4656x3520 pixels: done
[2019-05-20 14:59:42] Computing image statistics: done
[2019-05-20 14:59:42] 34 FITS keywords extracted.
[2019-05-20 14:59:42] *** Error: Parsing SITELAT FITS keyword: Parsing sexagesimal expression: Parsing integer expression: conversion error:
[2019-05-20 14:59:42] 37⬛d57m59.350s
[2019-05-20 14:59:42] *** Error: Parsing SITELONG FITS keyword: Parsing sexagesimal expression: Parsing integer expression: conversion error:
[2019-05-20 15:02:05] /Volumes/All My Documents/Astrophotography/Dec 2018 onwards/Calibration Frames 1600FW data/Dark-15min/Target 1_900sec_1x1__Red_H_frame12_2019-03-01.fit
[2019-05-20 15:02:05] Reading FITS image: 16-bit integers, 1 channel(s), 4656x3520 pixels: done
[2019-05-20 15:02:05] Computing image statistics: done
[2019-05-20 15:02:05] 34 FITS keywords extracted.
[2019-05-20 15:02:05] *** Error: Parsing SITELAT FITS keyword: Parsing sexagesimal expression: Parsing integer expression: conversion error:
[2019-05-20 15:02:05] 37⬛d57m59.350s
[2019-05-20 15:02:05] *** Error: Parsing SITELONG FITS keyword: Parsing sexagesimal expression: Parsing integer expression: conversion error:
[2019-05-20 15:02:05] 145⬛d12m29.200s
[2019-05-20 15:02:05] Weight          :     1.00000
[2019-05-20 15:02:05]

No errors on flat frames.

Offline ghealey56

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Just rolled back to MAC OS Mojave 10.14.4 PixInsight Core 01.08.06.1457 Ripley (x64) and no erros

Offline Juan Conejero

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There is no bug here. The following values of the nonstandard SITELAT and SITELONG keywords:

37d57m59.350s
145d12m29.200s

are not valid. See the SBIG proposal for FITS keyword extensions document. The expected format for these keywords is the same as OBJCTDEC, that is, 'DDD MM SS.sss'.

So the problem is being caused by the application that created these FITS files.

Versions of PixInsight before 1.8.6.1473 didn't make use of the SITELONG and SITELAT keywords, but now we use them to acquire the geodetic location of the observer, which is necessary for ephemeris calculations performed by our astrometry engine.

See also another forum thread where this issue has already been discussed.
Juan Conejero
PixInsight Development Team
http://pixinsight.com/

Offline ghealey56

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Hi Juan, many thanks for your prompt reply and the reference to the issue. Kind Regards Geoff