Difference between revisions of "Instrumentation"

Latest revision as of 17:15, 25 April 2011

Questions in this category have been asked by PJ,MT

what do you know about HST?
why do we build large telescopes on the ground, if HST has a much better resolution with just 2.3m?

If we observed a neutron star in LMC from a X-ray telescope, are we able to use a optical telescope to find out if it has a optical companion?
- How many stars in LMC?
- What's the angular resolution for a X-ray telescope (some early X-ray telescope before Chandra)?
- What's the angular resolution for a typical optical telescope?
- In the field we observed the neutron star, how many stars we would observed in optical?

What's the typical spectral resolution for a optical telescope?
What distances can we get to using parallax measurements?
What is the photometric precision that can be achieved from the ground? What limits the attainable photometric precision?

At optical wavelengths, what's the typical limit to the effective telescope size set by atmospheric seeing? (RS)
What is the seeing at Magellan on a good night? (RS)
What is the difference between atmospheric effects in optical and radio astronomy? (RS)

How was the frequency band of MWA chosen? (I'm in MWA; other experimentalists could get an analogous question). (RS)

@@ Line 24: / Line 24: @@
 * How was the frequency band of MWA chosen?  (I'm in MWA; other experimentalists could get an analogous question).  (RS)
+* What are the following and to what sorts (read: wavelengths) of astronomers care about them? (RS)
+** Adaptive Optics
+*** How does complexity of the AO system scale with aperture size?
+*** What is the characteristic size of turbulent cells?
+** Closure phase
+*** What are measurements int he UV plane called?
+** Bolometer
+** CCD
+*** How do X-ray and optical astronomers use CCDs differently?
+** Grazing incidence optics?
+** Downmixing
 [[Astrophysics]]