Quote:
Originally Posted by Blackspear
I live on the northern end of the Gold Coast in Queensland, and have purchased a 2nd hand Sky- Watcher Traditional Dobsonian Telescope 254mm/1200mm (10") for Christmas for my 11yr old daughter who wants to be a astrophysicist (at this point in time). The telescope still has 2yrs of warranty (the owner purchased it new from Slacks Creek in Brisbane).
All caps are off, and we can locate the moon with the finderscope, but no matter what we do, we can't see it through the focus tube using a 10x or 25x eyepiece.
I left the telescope outside to come down to temperature for over 30 minutes.
I am seeing a brilliant bright line when looking through the focus tube, it appears in the centre coming from the edge of the angled secondary mirror.
What obvious thing am I doing wrong?
Cheers  |
It also could be that your finder scope is not lined up with the telescope
First thing to do in the daylight is find something like a power pole about a a 100 meters or more away in the main scope using the lowest magnification eyepiece and center it.
25mm,not the 10mm.
Look in the finderscope and see how far out of alignment you are.
With the adjustment knobs on the finderscope align it to the telescope
Not the other way round.
Then you will see if your scope is out of colimation when you can find some stars later on.
I hope this helps.
Cheers
