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---Quick Links---
---Archive Interfaces---
Argus: proposal info
Browse: search HEASARC archives
NVO DataScope
SkyView: virtual observatory
Xamin: powerful archive search
---Software & Tools---
CalDB: Calibration database
Coordinate Converter
Energy Converter
FITS: standard data format
FITSIO: FITS subroutine library
FTOOLS: general s/w for FITS files
fv: FITS file editor
Hera: remote data analysis service
HEXTErock
nH: Column Density
RPS proposal submission
RXTE ASM weather map
Time/Date Converter (xTime)
Timeline (RXTE, Swift, & HETE-2)
Viewing: possible obs. times
WebPIMMS: flux/count converter
WebSpec: spectral sims
Xanadu: data analysis suite
X-ray Background Tool
X-ray, Gamma-ray, EUV Source Finder
---Resources---
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---Education & Pub. Outreach---
APOD: Astronomy Picture of the Day
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RELATED SITES
GALLERY
(a) Crab #1
(b) Crab #2
