133 reputation
6
bio website github.com/Muon
location Sydney, Australia
age 20
visits member for 3 years, 5 months
seen Sep 15 at 11:57

Aspiring programmer.


Mar
28
awarded  Popular Question
Jun
12
comment How many stars within 5 parsecs?
I've updated the script gist.
Jun
12
revised How many stars within 5 parsecs?
Explain what happens if filtering on quality.
Jun
12
revised How many stars within 5 parsecs?
Explain what happens if flagged stars are not counted.
Jun
12
comment How many stars within 5 parsecs?
Also, the Tycho catalog guide, vol. 1 gives the median astrometric precision of all stars as 25 mas or 7 mas for $V_T$ < 9 mag.
Jun
12
revised How many stars within 5 parsecs?
Explain what happens if I discard negative parallaxes.
Jun
12
comment How many stars within 5 parsecs?
That's weird, but OK. So, I should just outright discard negative parallaxes? (I took the absolute value.) What about the "missing" stars in the Hipparcos catalog?
Jun
11
comment How many stars within 5 parsecs?
I don't know, but to double-triple-super-mega-check, I've taken those records apart by hand. Negative parallaxes.
Jun
11
comment How many stars within 5 parsecs?
See cdsarc.u-strasbg.fr/viz-bin/Cat?I/239#sRM2.13 And why couldn't those be parallax values? Also, I initially did use the delimited field approach, but I got the same results. I switched to fixed offsets because it ran faster.
Jun
11
revised How many stars within 5 parsecs?
Fixed typos.
Jun
11
comment How many stars within 5 parsecs?
This is the script I used: gist.github.com/2912916
Jun
11
asked How many stars within 5 parsecs?
Mar
30
awarded  Scholar
Mar
30
awarded  Supporter
Mar
30
awarded  Student
Mar
30
accepted Amplitude at distance from source
Mar
30
awarded  Editor
Mar
30
revised Amplitude at distance from source
replaced \thicksim with \sim
Mar
30
comment Amplitude at distance from source
So, er, $A^2 \sim \frac{1}{x^2}$ and therefore $A \sim \frac{1}{x}$?
Mar
30
asked Amplitude at distance from source