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BAO
  • Member for 2 years, 6 months
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5 votes
2 answers
1k views

Why does the Bullet Cluster have many names?

4 votes
1 answer
304 views

Bolometric correction of the full moon

2 votes
1 answer
293 views

What's different of power spectrum and correlation function of BAO?

1 vote
1 answer
144 views

Finding the Laplacian of the deflection potential: I obtain 4𝜅(𝜃⃗ ), not 2𝜅(𝜃⃗ ). Why am I wrong?

3 votes
1 answer
123 views

What's mean of the "FITS BLOCK"?

3 votes
1 answer
105 views

How can I use the "stiff"(the library from this site; astromatic.net). I can not escape from the error[*Error*: no 2D FITS data in <MY FITS FILE>]

1 vote
1 answer
89 views

In shear component $\gamma_1, \gamma_2$ of weak lensing, Why does the defining with $2\phi$ reflect "real angle"?

2 votes
0 answers
79 views

How to obtain Magellan 6.5m telescope data?

1 vote
1 answer
65 views

How to show the image of the fits file what I want to see among several fits file in astrodrizzle

2 votes
1 answer
59 views

Query about the definition of photometric zeropoints

1 vote
0 answers
46 views

In the explanation of fitgeometry=general of drizzlepac.tweakreg.TweakReg, How are there two different rotation with respect to "x axis" and "y axis"?

2 votes
1 answer
42 views

Why is the filter needed for low resolution GMOS spectroscopy?