Advice for stirring your online community and fostering engagement

by Super User

Oct 12, 2017

Advice for stirring your online community and fostering engagement

When you enter into any new area of science, you almost always find

yourself with a baffling new language of technical terms to learn before you can converse with the experts. This is certainly true in astronomy both in terms of terms that refer to the cosmos and terms that describe the tools of the trade, the most prevalent being the telescope. So to get us off of first base, let’s define some of the key terms that pertain to telescopes to help you be able to talk to them more intelligently. The first area of specialization in telescopes has to do with the types of telescopes people use. The three designs of telescopes that most people use are the Refractor, the Reflector and the Schmidt Cassegrain telescope. The refractor telescope uses a convex lens to focus the light on the eyepiece. The reflector telescope has a concave lens which means it bends in. It uses mirrors to focus the image that you eventually see. The Schmidt Cassegrain telescope uses an involved system of mirrors to capture the image you want to see. A binocular telescope uses a set of telescopes mounted and synchronized so your view of the sky is 3-D. Beyond the basic types, other terms refer to parts of the telescope or to the science behind how telescopes work. Collimation is a term for how well tuned the telescope is to give you a good clear image of what you are looking at. You want your telescope to have good collimation so you are not getting a false image of the celestial body. Aperture is a fancy word for how big the lens of your telescope is. But it’s an important word because the aperture of the lens is the key to how powerful your telescope is. Magnification has nothing to do with it, its all in the aperture.

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Advice for stirring your online community and fostering engagement

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By Maria Martinez

LUXEMBOURG, Oct 7 (Reuters) - Germany's economic model is not broken but Europe's
biggest economy has lost competitiveness over the past decade,
German Finance Minister Christian Lindner said on Monday.

"We can't be satisfied with the economic developments in Germany," he told journalists ahead of a Eurogroup meeting.

The German economy is expected to contract by 0.2%
in 2024, an economy ministry spokesperson said on Monday, cutting the forecast from a previous projection of 0.3% growth this year.

If realised, this would be the second consecutive year of contraction for Germany's economy,
which was the weakest among its large euro zone peers last year with
a 0.3% decline in gross domestic product.

Lindner said the government was introducing supply-side measures to try to return the economy to growth.

"After these reforms, Germany will have more competitiveness again," Lindner said, adding that the growth initiative was just a first step for an economic
turnaround, "but we have to build on it."

AMBITION NEEDED

Lindner said "ambition" was needed to keep EU public finances in order, or to put them back in order where necessary.

"I can only encourage everyone to implement structural reforms and to make unpopular decisions," Lindner said.

"What seems to be unpopular at the moment is the willingness to take responsibility for the next generation and for the stability of the European Union as a whole."

Lindner said he could not comment on the French budget plans because he had not had the
chance to talk with his French colleagues yet, but he would do so on Monday
evening.

"We should all realise that the credibility of public finances vis-à-vis the capital markets is not to be trifled with," Lindner said.

"We must credibly reduce our deficits and our debt so that we can continue to finance ourselves well and in a stable manner."

(Reporting by Maria Martinez, Editing by Miranda
Murray and Christina Fincher)