another question please
Posted 27 August 2013 - 01:19 AM
Posted 27 August 2013 - 09:22 AM
Then you can find stars by name.
The 'STARS' button only uses the SAO numbers and practically no-one knows them without looking each one up in a book or online.
It is only good when you want to look at a star that doesn't have a name, but has a SAO number
Posted 27 August 2013 - 09:54 AM
I find a reasonably bright star by itself useful for getting a quick and dirty focus. If you also have a Bahtinov focusing mask this is maybe all you'll need to do (it's an excellent way of getting a good accurate focus). I personally don't use a mask (too lazy to make one up so far ... lol) but I will also point at a brighter globular cluster (M13, M3, M5, etc.) and use that to fine tune my focus with a video camera. I look for faint stars in the cluster that just become visible when I'm in focus. I also find the clusters useful to check the quality of the stars in the corners of my fov.