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There are some issues with roundtripping of WCS when using Spectrum1D read and write.
If you create a spectrum 1D with a wcs:
`from astropy.wcs import WCS`
`from specutils import Spectrum1D`
`im…
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#### Code Sample
This is probably the fastest implementation I am aware of at the moment: https://rdrr.io/cran/WGCNA/man/bicor.html
However this is also available but considerably slower and not p…
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Compared with other tools (eg. stilts/topcat), the (ASCII) votable read is slow in astropy - by about a factor of 10 according to my measurements. Version 3 is doing a bit better (~20%) than version 2…
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Hi,
Thanks for this package, it's great and so simple to use.
I would have one suggestion: as a package owner, it is not obvious to understand how to provide the correct bibtex for a package.
…
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**Transferred from astropy/astropy**
Both of the USNO hosts (maia.usno.navy.mil, toshi.nofs.navy.mil) for retrieving the IERS Bulletin A dataset are flaky. Instead of a primary URL specified by the…
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### Description
When creating a table column with `u.mag()` as unit, the FITS writer refuses to take it as a FITS `mag` standard column but serializes it in a astropy specific manner.
### Expe…
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Now that we have specutils, this notebook https://learn.astropy.org/tutorials/UVES.html could use specutils functions where available.
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🐞 **Problem**
The `Orbit.classical()` method is slow in comparision to `elements.rv2coe`, the function it is based on. The performance difference is in the order of 40x. According to `snakeviz`, 53…
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Code and error are given in detail. It's a radio image.
import astropy
import aplpy
import matplotlib
gc=aplpy.FITSFigure('NVSS.fits')
gc.show_colorscale(cmap=matplotlib.cm.gray_r,vmin=0…
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The specification of numpy