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Arion

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About Arion

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    Nebula

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    Germany

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  1. I've put together a list of prominent stars with various details so that I can get familiar with what I am actually looking at. However, there are some really odd spectral types listed for some of them, for which I wasn't even able to find a definition online. Anyone know what these mean? Am/dM1e (Castor B ) A0mA1 Va (Sirius A)
  2. I assume the wheel is too? Would be strange to have an adjustment wheel on one axis but not the other.
  3. There is this silver metal disk behind the big adjustment wheel with a little lever and a small ridge on the edge. It's just dangling there. What is for?
  4. The ISS is freaky in so many ways. Is there a good site that shows the current position of the ISS above the ground?
  5. Light isn't great here (though I am surprised how much you can see with just your eyes) and humidity is always high. So I guess something like 20° as a cutoff point would sound realistic?
  6. I was just assembling a list of interesting stars that I should try to find and that of course raised the question which of these stars would never be visible because they are just too far south. Now my latitude is 53°52'N and if basic geometry isn't failing me this means that hypothetically at midsummer, I could see the sky down to -43°52'. But even with me living in a really flat area, that's not going to be realistic, isn't it? Peeking at the horizon will get me way too much air in the view. How much should I realistically subtract to get the maximum practical declination south at whic
  7. It's not just in opposition, but it also happens near the aphelion of Earth and the perihelion of Mars. On the 27th it's going to be 94% of the apparent diameter that it can possibly get. 2020 will be another good one, though not as big as now, and after that the oppositions will be increasingly smaller looking. It seems to be about a 16 year cycle. So don't expect a view like this again until 2034 or so. I am so glad that I didn't wait another month or more to finally get a telescope. This week seems like an amazing one for watching planets and the moon.
  8. My telescope should arrive on tuesday or wednesday, right in time for the lunar eclipse on thursday with completely clear skies announced for the entire middle and end of the week. This should be really cool.
  9. Could this work? I believe at each pass, the ISS is crossing the sky in a smooth arc, similar to the stars. Just around a different axis. So shouldn't it be possible to align the mount with that axis to easily track the ISS manually without having to rapidly adjust altitude and azimuth simultaneously?
  10. It's more important for long exposure photography, right? To avoid smears.
  11. Oh yeah, I am talking about an all manual mounting. Kind of important detail I forgot to mention, I guess.
  12. Given that I'm in the middle of a moderately big city, there's a pretty decent observation point in an empty guest room under the roof of our house for when I don't feel like driving out. It's just above most of the surrounding buildings with a great open view south, away from the city center. The only downside is that setting up the telescope on the southern side of the house makes it impossible to see Polaris. There's a roof in the way. What's the best way to get the most precise polar alignment without line of sight to Polaris? Using a compass and the latitude adjustment should give me
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