Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Post-processing of the HST STIS coronagraphic observations   In the past 20 years, the Hubble Space Telescope (HST) STIS coronagraphic
instrument has observed more than 100 stars, obtaining more than 4,000 readouts
since its installment on HST in 1997 and the numbers are still increasing. We
reduce the whole STIS coronagraphic archive at the most commonly observed
positions (Wedge A0.6 and A1.0) with new post-processing methods, and present
our results here. We are able to recover all of the 32 previously reported
circumstellar disks, and obtain better contrast close to the star. For some of
the disks, our results are limited by the over subtraction of the methods, and
therefore the major regions of the disks can be recovered except the faintest
regions. We also explain our efforts in the calibration of its new BAR5
occulting position, enabling STIS to explore inner regions as close as 0.2".

15
The categories of this paper are: nucl-ex
13
The categories of this paper are: quant-ph
17
The categories of this paper are: q-fin
3
The categories of this paper are: physics
9
The categories of this paper are: nlin
21
The categories of this paper are: adap-org
16
The categories of this paper are: stat
31
The categories of this paper are: ao-sci
33
The categories of this paper are: plasm-ph
8
The categories of this paper are: hep-ex
22
The categories of this paper are: chao-dyn
12
The categories of this paper are: nucl-th
25
The categories of this paper are: patt-sol
4
The categories of this paper are: cond-mat
37
The categories of this paper are: supr-con
0
The categories of this paper are: hep-ph