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Bug #902

closed

Problem with high-order .ahead and rotated fields

Added by Herve Bouy over 4 years ago. Updated about 3 years ago.

Status:
Closed
Priority:
Normal
Start date:
10/18/2017
Due date:
12/10/2018
% Done:

100%

Estimated time:
2.00 h
Spent time:

Description

Trying to scamp HSC images, I produced a .ahead including 2nd order terms (attached) to deal with the large field of view.
Then I scamped a number of HSC catalogs. Some were rotated by 90 deg.
The solution for the non-rotated images is great. But for the rotated images, the distortion maps show that the solution is completely wrong.

A small sample of files can be found on dance09 in:
/raid/hbouy/hsc/small_list.txt

fields rotated by -90deg fields rotated by -90deg


Files

distort_2.png (150 KB) distort_2.png fields rotated by -90deg Herve Bouy, 10/18/2017 06:23 PM
distort_3.png (138 KB) distort_3.png fields rotated by -90deg Herve Bouy, 10/18/2017 06:23 PM
hsc.ahead (147 KB) hsc.ahead Herve Bouy, 10/18/2017 06:24 PM
distort_2_new.png (143 KB) distort_2_new.png Distortion map for astrometric instrument #2 Emmanuel Bertin, 12/10/2018 03:26 PM
distort_3_new.png (140 KB) distort_3_new.png Distortion map for astrometric instrument #3 Emmanuel Bertin, 12/10/2018 03:26 PM
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