XRT Stray Light Study 7 -- Measurement and Correction.

Link to the 5th and 6th test page.

(14 August, 2014 by Aki Takeda)

1. About the 7th tests (performed in the 2014/08/07 timeline).

Purpose.

Pointing coordinates determination:

Exposure time determination:

The tests were performed on:

Solar condition.


2. Test sequences.

N-pole sequence.

E-limb sequence.

S-pole sequence.

3. Results of the test observation.

3.1 Sunset light curves

at the time of the N-pole pointing.

at the time of the E-limb pointing.

at the time of the S-pole pointing.

3.2 Stray light images

Ti-poly stray-light images (4 second exp.) movie.

C-poly stray-light images (4 second exp.) movie.

Ti-poly stray-light images (1.4 second exp.) movie.

C-poly stray-light images (1.4 second exp.) movie.

Ti-poly stray-light images (4 second exp.) movie.

C-poly stray-light images (4 second exp.) movie.

3.3 Image correction

BEFORE [synoptic (double) composite image] AFTER [stray light image (prep-ed) subtracted]

BEFORE [(double) composite image before twilight] AFTER [stray light image (prep-ed) subtracted]

BEFORE [(double) composite image before twilight] AFTER [stray light image (prep-ed) subtracted]

BEFORE [(double) composite image before twilight] AFTER [stray light image (prep-ed) subtracted]

BEFORE [(double) composite image before twilight] AFTER [stray light image (prep-ed) subtracted]

BEFORE [(double) composite image] AFTER [stray light image (prep-ed) subtracted]