Using SAOImage ds9 - CIAO 4.18 - Harvard University
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 - …
True Color Images in ds9 - CIAO 4.18 - Harvard University
Feb 15, 2022 · SAOImage ds9, the imaging application distributed with CIAO, has the capability for users to create an RGB image and interactively adjust many of its parameters to achieve optimal …
Watch Out Page - CIAO 4.18 - Harvard University
Dec 10, 2025 · Problems with Xquartz 2.8.5 Some users have reported problems related to disappearing menus using ds9 with Xquartz version 2.8.5 which was released on January 26, 2023. This appears …
Creating Source and Background Files - CIAO 4.18
Jan 24, 2022 · Overview Synopsis: The tool dmgroupreg takes a ds9 region file (which must contain grouping information) and creates source and background region files that the CIAO tools can …
Chandra Newsletter Article
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 …
Fitting FITS Images - CIAO 4.18 Sherpa - Harvard University
Last Update: 8 Dec 2025 - updated for CIAO 4.18; added note about using DS9 preferences to image data sets via Sherpa.
Ahelp: obsvis - CIAO 4.18
As one option, in ds9, you can select Analysis/Archives/SkyView, specify the image size in both degrees and pixels. Retrieve/save a FITS image in your desired bandpass, then deselect Image-Auto-Reload …
Ahelp: dmregions - CIAO 4.18 - Harvard University
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, …
CIAO: X-ray Data Analysis Software - CIAO 4.18
Dec 12, 2025 · CIAO is the software package developed by the Chandra X-Ray Center for analysing data from the Chandra X-ray Telescope. It can also be used with data from other Astronomical …
Ahelp: convert_ds9_region_to_ciao_stack - CIAO 4.18
The ds9 region files must be saved in physical coordinates. The output CIAO stack may not always be compatible with ds9; in particular if any of the panda, bpanda, or epanda shapes were used.