astromath
  • Member for 7 years
  • Last seen more than 1 year ago
the initial astrometry calibration for a telescope
5 votes

First you have enter your coordinates into the mount's software and then align it(e.g. 3 star alignment).After having done that, when you finish the observation you have to park the telescope. ...

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How could I determine what areas of the Milky Way will be visible?
Accepted answer
3 votes

Have you tried to use Stellarium? You can insert the date of the observation and see how the sky will look like from your location. There is also setting to make the Milky Way be seen more intense.

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Newtonian reflector collimation question
Accepted answer
3 votes

Your scope is f/5. There will always be some coma aberration. Always, the image quality is worse as you get closer to the edge of the field of view (FOV). Personally, given that the fact that you will ...

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Why not use only one support vane for the secondary mirror, to avoid multiple diffraction spikes?
3 votes

I cannot answer about the JWST. Regarding amateur telescopes, there is the option of using curved supports, which are intended to eliminate diffraction spikes and reduce overall diffraction. http://...

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How much telescope do I actually need for astrophotography?
2 votes

I would start with at least an equatorial mount sth as the HEQ5. However, there are many factors to take into account such as what kind of targets you want, mostly, to shoot. Also, you you want to ...

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Which telescope to choose and some general questions
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1 votes

Macs also need to be collimated, but much more rarely than Newtonians. They hold their alignment better (for more time). For astrophotography you also have to think about the field of view each ...

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How can I see a nebula?
0 votes

Some filters also help improve the view as seen through the telescope. Even a simple and cheap red filter would help,as it will remove most part of the light pollution spectrum and will let Ha reach ...

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