XRT contamination & dust spots correction.

18-Apr-2020, Aki Takeda.
8-Feb-2023, coronal images added for XRT cal mtg.
link to the 2017 study page

Spotty image examples
(click to enlarge)

1. Contamination maps

Read from xrt_prep.pro that calls xrt_spotcor.pro.
Filename: /ssw/hinode/xrt/idl/util/xrt_spotmasters.geny.
[left] used for the period: 2007/07/23 until 2008/02/01
[right] used from the period: 2008/02/01 and after

v20070831 by M.Shimojo v20080201 by M.Shimojo
(Original 2048x2048 images were rebined to 1024x1024 in the table above.)
Number of spot pixels in 2048x2048 spot images
spot map1: 109294 (ratio: 0.0260577)
spot map2: 229994 (ratio: 0.0548348)

2. Dust maps

[left] /ssw/hinode/xrt/idl/util/dust_pix1.dat. Applied in xrt_spotcor.pro along with contamination spot correction in the above.
Also assumed by eclipse_spotcor.pro when no dust map is passed.
[middle] /home/takeda/idlpro/xrt/SYNOP/dust.sav. Applied in mk_monthly_synop.pro, mk_monthly_synop2.pro through the program eclipse_spotcor.pro for the period 2017/05/01 until 2018/07/01.
[right] /home/takeda/idlpro/xrt/SYNOP/mercury_dust.sav. Applied in mk_monthly_synop.pro, mk_monthly_synop2.pro through the program eclipse_spotcor.pro. for the period from 2018/07/01 and onward.

dust_pix1.dat (2009.10) by ?? dust.sav (2017.8) by P. Jibben mercury_dust.sav
(2019.11) by P. Jibben
(Original 2048x2048 images were rebined to 1024x1024 in the table above.)

3. Sample images

[click image for 2018-2023 movie]
Level0 images
(no spot correction)		 Composite images
(corrected with 2019 dustmap)