Finderscope alignment

Got a beginners' question? No matter how elementary, our friendly forum community and magazine writers will answer it.

Finderscope alignment

Postby WatchfulOutsider » Sun Dec 31, 2017 10:45 am

Is it possible to align a finderscope at a distance closer than 1/4 mile? I live in a closely built up area and the best I can manage is an object about 300 yards away
WatchfulOutsider
 
Posts: 4
Joined: Thu Dec 21, 2017 8:34 am

Re: Finderscope alignment

Postby Aratus » Sun Dec 31, 2017 11:43 am

It shouldn't be a problem at 100 yards or more. By day, centre of the telescope view by using what you can see until you find a corner of a building, the centre of a window or treetop etc, and then adjust the finder accordingly. At night centering a bright star in the finder should show it somewhere in the telescope view. Centre it in the telescope, and adjust the finder once more. As long as you don't knock it, it will remain aligned.
I use an 11" reflector (Celestron CPC 1100) and a 3" refractor, (Sky-Watcher ST80) mounted on an equatorial wedge, housed in a 2.2m Pulsar observatory. I use a ZWO ASI 120MM, ZWO ASI1600MC and Canon 1300D for imaging.
Aratus
 
Posts: 870
Joined: Tue Jan 12, 2016 2:17 pm
Location: East Lincolnshire


Return to Ask a silly (astronomy) question

Who is online

Users browsing this forum: No registered users and 1 guest