![]() Fascinating stuff if astronomy is your "thing." Otherwise, if it is not, you might get bored quickly. One star recently skimmed the event horizon. Since I am a subscriber to Astronomy magazine, I really had an exciting discussion about what they are finding with the telescopes, such as one lady who has been watching stars careening around the black hole (Sagittarius A*) in the middle of the Milky Way. There is a knowledgeable individual on duty there to answer any questions. So, with all that said, what is the Keck Observatory Visitors Center? It's a small public education area in the administration building in Waimea for the telescope located on the mountaintop. (Avis does not allow it, for example.) You can rent 4 wheel drive vehicles from some companies and my guess is they are not cheap, from what I saw when I checked online or you can also go with a tour group, which is also not cheap. Some don't even allow their vehicles to go up to the visitors center at 9,000+ feet. Rental car companies do not allow their vehicles up this road. Probably because they don't want you die on the way down if your brakes fail in a regular car, which would be very possible. Next, if you plan on going up to the top of the mountain to see them, it's a gravel road restricted to 4 wheel drive vehicles only. Check with what ever telescope administration in advance of your visit to see if theirs is viewable if that is something you wish to do. A few have viewing areas behind glass partitions, most of which require reservations in advance of your visit. ![]() You can see the building on top of the mountain, along with all the other telescope buildings up there, but almost all the telescopes are off limits to the general pubic. Except as provided by law, this material may not be further reproduced, distributed, transmitted, modified, adapted, performed, displayed, published, or sold in whole or part, without prior written permission from the American Physical Society.It might be confusing to some to see the Keck Observatory Visitors Center along the main highway in Waimea, since the actual telescopes are on top of Mauna Kea at 13,000+ feet.įirst, the general public cannot visit the actual telescopes. Readers may view, browse, and/or download material for temporary copying purposes only, provided these uses are for noncommercial personal purposes. Reprinted with permission from the American Physical Society: Physical Review Letters 117, 051101 © 2016 by the American Physical Society. With Planck15 priors, the corresponding result is log10|fR0|<−5.16. With observations from the Canada-France-Hawaii-Telescope Lensing Survey, our peak analyses give rise to a tight constraint on the model parameter |fR0| for n=1. In comparison with studies using optical or x-ray clusters of galaxies, weak lensing peak analyses have the advantages of not relying on mass-baryonic observable calibrations. ![]() ![]() In this Letter, we report the observational constraints on the Hu-Sawicki f(R) theory derived from weak lensing peak abundances, which are closely related to the mass function of massive halos. ![]()
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