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5 votes

Optical Observation Calls: How and Where to apply for optical observations?

Optical observatories -- or commissions that allocate time on a national or international basis to one or more telescopes -- generally accept proposals twice a year, during a one-month period with a ...
Peter Erwin's user avatar
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4 votes

What can be learned by observing tumbling asteroid 319 Leona passing in front of Betelgeuse's fickle photocenter? What campaigns have been organized?

Unfortunately, I have not found much information. On the website of the "Societé Astronomique de France" they say: A team of researchers from Paris Observatory – PSL under the direction of ...
Albert's user avatar
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3 votes
Accepted

In which countries are there organised Messier Marathons?

As far as I have researched, there are really many countries that organize Messier Marathon, but also many astronomers organize it locally only for them and don't publish it on web, so I could write ...
User123's user avatar
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1 vote
Accepted

"To date we have covered 624 square degrees of sky near to and interior to the orbit of Venus" meaning wrt Asteroid survey Interior to Earth and Venus

Couldn't all those square degrees that have been covered be full of undiscovered objects a year or two later? Yes, absolutely. Luckily orbital periods are rather short for this kind of objects - ...
asdfex's user avatar
  • 506
1 vote

How do you determine whether a certain object can be detected by an observatory based on coordinates?

I always believe that one picture can tell more than 1000 words. So, here you have it: The possibility of seeing the object is called declination $\delta$. It is the angular distance from the ...
User123's user avatar
  • 2,879
1 vote

How do you determine whether a certain object can be detected by an observatory based on coordinates?

Welcome to Astronomy SE! If the latitude φ of the observatory is equal to or less than (90° + δ), then the object is visible at least some of the time. For example, the Trifid Nebula (M 20) is at δ = −...
Pierre Paquette's user avatar

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