Questions tagged [astropy]

Questions related to Astropy, a community Python package for Astronomy

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6 votes
2 answers

How can I calculate the uncertainties in magnitude like the CDS does?

When you check an entry of the Gaia DR2 stellar catalogue in Vizier, for example this one, you can see that there is a value for the G magnitude (in our case 18.0733 mag) and a value for the ...
Swike's user avatar
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8 votes
3 answers

How do I plot galactic coordinates using matplotlib and astropy in python?

I want to make a projection of millisecond pulsars on the galactic plane, much like this one from Sala et al. 2004: I have tried several methods, and have not gotten anywhere. This is my current ...
Maria's user avatar
  • 185
7 votes
2 answers

What does "additive fringing from the (multiplicative) twilights" mean?

The question How can I make the fringing pattern visible in my flat (twilight) images for filter i? includes: I have a bunch of twilight flats that have been preprocessed (dark, bias, overscan etc.)...
uhoh's user avatar
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2 votes
1 answer

Making sense of the lomb-scargle periodogram

I am trying to use the periodogram to tell when a signal is periodic or not by following the tutorial for the astropy Lomb-scargle periodogram here.
wrahman's user avatar
  • 23
1 vote
1 answer

trouble installing drizzlepac

I'm trying to install drizzlepac to follow this tutorial on aligning hst images: However, I get ...
tzirtzi's user avatar
  • 13
0 votes
1 answer

How to Interpret Lomb Scargle periodogram

lomb scargle periodogram: ...
rilesdg3's user avatar