Timeline for Converting FITS (NuSTAR) coordinates to WCS
Current License: CC BY-SA 3.0
26 events
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| Jul 20, 2019 at 22:02 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| Jun 20, 2019 at 21:08 | history | edited | called2voyage♦ |
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| May 2, 2019 at 17:02 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
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| Jul 6, 2018 at 14:10 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| Jun 6, 2018 at 13:31 | answer | added | Kornpob Bhirombhakdi | timeline score: 1 | |
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| May 6, 2018 at 18:38 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
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| Mar 7, 2018 at 17:33 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| Feb 5, 2018 at 16:35 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| Jan 6, 2018 at 16:26 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| Dec 7, 2017 at 16:26 | history | edited | Robert Rosca | CC BY-SA 3.0 |
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| Dec 7, 2017 at 16:22 | comment | added | Robert Rosca | Aha, figured out what I did wrong, I was being stupid and converting degrees to h:m:s as if they were angles on a circle, which doesn't work for right-ascension since it goes from -90 to 90, not 0 to 360. Now that I've fixed it (here's a notebook where it works) it's still a bit off around 10^-5, but I guess that's just some floating point errors adding up along the way. | |
| Dec 7, 2017 at 15:07 | comment | added | user1991 | How much is the discrepancy between DS9 output and what you get? | |
| Dec 7, 2017 at 12:22 | comment | added | Robert Rosca | I'm working in Julia now. Basically, NuSTAR data has to be calibrated before it's suitable for scientific analysis and there are a few stages to that calibration, one of the stages requires you to select a source region (as a .reg file, usually created by manually selecting an area using DS9) before you get the final fully calibrated/cleaned data. The FITS files store data as X Y pixel coordinates, but the region file needs to be in WCS, so I convert X, Y to FK5 angles. Problem now is that for converting the angle I get in degrees (which is correct) to hh:mm:ss is different to what DS9 outputs | |
| Dec 7, 2017 at 12:19 | comment | added | user1991 | What programming language do you work in? Furthermore, it is not entirely clear to me what you want as output, and I am unfamiliar with this 'nuproducts' tool. Why are the degrees, in which you have converted the pixel coordinates as you say in the EDIT, unsufficient? | |
| Dec 6, 2017 at 12:56 | history | edited | Robert Rosca | CC BY-SA 3.0 |
added 307 characters in body
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| Dec 1, 2017 at 3:15 | answer | added | Mick | timeline score: 1 | |
| Nov 21, 2017 at 14:13 | review | First posts | |||
| Nov 21, 2017 at 15:47 | |||||
| Nov 21, 2017 at 14:08 | history | asked | Robert Rosca | CC BY-SA 3.0 |