The astronomy community

Question 1

Where are major optical and infrared astronomical observations on Earth taken from?

Answer 1

Chile, Hawaii, Australia and the Canary Islands

Question 2

What factors are considered that influence the choice for where observations are made?

Answer 2

High elevation,
Frequent cloudless nights,
Low atmospheric pollution and dry air,
Sufficient distance from built up areas that cause light pollution

Question 3

What advantages are there of computer controlled telescopes?

Answer 3

Being able to work remotely,
Continuous tracking of objects,
More precise positioning of the telescope,
Computer recording and processing of data collected

Question 4

What are main advantages and disadvantages of using telescopes outside the Earth’s atmosphere?

Answer 4

It avoids absorption and refraction effects of atmosphere,
Can use parts of electromagnetic spectrum that the atmosphere absorbs,
High costs of setting up, maintaining and repairing,
There are major uncertainties of space programme

Question 5

What reasons are there for international collaboration?

Answer 5

Shared resources and financial costs mean larger projects can be funded and accomplished.
Research and findings can also be shared and so experts from around the world can share knowledge and make better conclusion?

Question 6

What non-astronomical factors are important in considering putting up an observatory?

Answer 6

Cost,
Environmental and social impact near the observatory,
Working conditions for employees