<p>Another trouble in SAOImae DS9: with the Rotation Measure catalogue I have just downloaded: “Rotation measure image of the sky (Taylor+2009)”, even if I have set up the WCS to galactic before the catalogue loadind, I obtain the table file with another WCS (and the option to chane WCSto another one is inactivated); then I can not obtain from it the galactic longitude and altitude needed for my report..</p>

CC BY-SA 4.0
2018-07-31T18:36:49.690Z
Did you try creating your own region files from the catalogue?
Kornpob Bhirombhakdi
CC BY-SA 4.0
2018-07-31T21:04:23.907Z
yes.I check that the world co-ordinate system selected is ‘Galactic’ and ‘Sexagesimal’ and I enter l=005 and b=24. then I type into the width box ‘15’ and the height box ‘15 ‘ and select ‘degrees’.  I obtain a card with no galactic coordonate !
Rulx Narcisse
CC BY-SA 4.0
2018-08-01T14:15:34.593Z
What I meant is, after you select the catalogue and filter the objects you want, you should export the database to a text file. Then, check the text file if there are information you need.
Kornpob Bhirombhakdi
<ds9>
help needed with inactivated option for wcs in SAO Image DS9
Rulx Narcisse
# help needed with inactivated option for wcs in SAO Image DS9

(Asked by: username_0 on 2018-07-31)

Another trouble in SAOImae DS9: with the Rotation Measure catalogue I have just downloaded: “Rotation measure image of the sky (Taylor+2009)”, even if I have set up the WCS to galactic before the catalogue loadind, I obtain the table file with another WCS (and the option to chane WCSto another one is inactivated); then I can not obtain from it the galactic longitude and altitude needed for my report..

**Tags:** ds9
> **Comments:**
> **username_1**: Did you try creating your own region files from the catalogue?  
> **username_0**: yes.I check that the world co-ordinate system selected is ‘Galactic’ and ‘Sexagesimal’ and I enter l=005 and b=24. then I type into the width box ‘15’ and the height box ‘15 ‘ and select ‘degrees’.  I obtain a card with no galactic coordonate !  
> **username_1**: What I meant is, after you select the catalogue and filter the objects you want, you should export the database to a text file. Then, check the text file if there are information you need.  

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