Mar 9, 2026 · The CIAO software package for analyzing data from X-ray telescopes, including the Chandra X-ray telescope.

Description `regphystocel' will convert a region file stored in physical coordinates into a ds9-format region file using celestial coordinates. Most CIAO tools can make use of regions in either physical or …

Feb 15, 2022 · The smoothing capability in ds9 lets you interactively smooth the data, as opposed to running the CIAO tools aconvolve or csmooth. For quantitative data analysis, the configurable CIAO …

Oct 28, 2025 · The Imaging threads cover a wide range of topics that include source detection, creating exposure maps and normalized images, and calculating image statistics. How to create color images …

While DS9 continues to be an independent project serving all fields of astronomy (and beyond), the collaboration with the SDS group has led to several exciting updates specifically of interest to the …

DS9 regions CIAO understands most of the simple, atomic regions that DS9 can draw including circle, ellipse, point, box, polygons, and annulus. The regions that are purely for annotations such as text, …

convert_ds9_region_to_ciao_stack convert_xspec_script convert_xspec_user_model coords_chandra coords_format coords_gratings coords_utils coords copy_colvals copy_piximgvals copy_transform …

Mar 9, 2026 · When DS9 starts it checks if there is an auto restore file/directory in your home directory. If one is found it will ask if you want to use it to restore your session.

Oct 28, 2025 · SAOImage DS9 CIAO 4.18 comes with version 8.7b2 of SAOImage DS9, which can be used to visualize images, event files, and even tabular data (this replaces the prism tool from CIAO …

Jan 13, 2022 · Related Links: ds9 Reference Manual ds9 Users Manual: CIAO-style threads on using ds9 Video demos and tutorials Using CIAO Region Files thread Last Update: 13 Jan 2022 - …