HSC FoV Check with Aladin¶
1. Download HSC Instrument FoV file¶
2. Download and install Aladin desktop program¶
- http://aladin.u-strasbg.fr/java/nph-aladin.pl?frame=downloading
- One can also use on-line Aladin if your brower is supporting Java plug-in.
3. Start Aladin by clicking the icon ¶
4. Input your target name or coordinates in Location
field window at the top¶
The following example is for M33.
Aladin will resolve the target name (M33
) into its coordinate and display the image of DSS colored
as the default.
You can also choose a server from DSS
, SDSS
, etc.
5. Load HSC instrument FoV file¶
-
Choose
File/Load instrument FoV...
in main menu. -
Push
Load it...
button at the bottom ofFoV ...
tab inServer selector
pop-up window. -
Select
Subaru_HSC_FoV.xml
in your folder and pushOpen
button onAccess to user data by filename or URL
pop-up window. -
You can find the
Subaru_HSC_FoV
on the top of the list as follows
6. Zoom out the image and check the Current position
and Angle
of FoV.¶
7. Display the HSC FoV on the Current position
with Angle
(= 0.0 deg)¶
Push Submit
button on Server selector
window.
8. Adjust the HSC FoV¶
You can rotate and move the HSC FoV with draging around the Current position
mark (green 5 dots).
- To move FoV, grab the center green point and drag your mouse (The mouse pointer turns to a hand shape).
- To rotate FoV, grab the green points around the center and drag your mouse (The mouse pointer turns to a rotation arrow mark).
9. Example: Set Angle=30
and three dither positions¶
- First, delete FoV with
Angle=0
- Select
Subaru_HSC_FoV
at the right side (set active layer). - Push
X delete
icon on the right of the image.
- Select
- Set
Angle=30
inServer selector
window. - Push
Submit
button inServer selector
window. - Check the FoV displayed over the image.
Display FoV at the 2nd position¶
- Click the 2nd position, then the
Target
coordinates are changed to that of the 2nd position. - Push
Submit
button. - Check the FoV at the 2nd position.
Measure the offset between the 1st and 2nd FoV¶
- Click
dist
icon on the right side of the image. - Click and drag the mouse button from 1st and 2nd position.
- Read the offset and position angle.