dawson Posted November 29, 2013 Share Posted November 29, 2013 Once Polaris is in the centre of the small circle, does anyone then rotate the RA and check to see if Polaris follows the larger circle? I have got a peripheral crack in the polar scope reticle from where i over tightened the adjustment screws when aligning it with the mounts axis, but it's right at the edge and there is no fracture though the glass, just a flake has come off. How well does Polaris follow the outer circle for others? James Link to comment Share on other sites More sharing options...
catman161 Posted November 29, 2013 Share Posted November 29, 2013 I do that James and it follows fine along the outer (bigger circle) aside from an expected tiny wobble as my reticule is not completely, perfectly centred as I got frustrated when I was doing it an just stopped after two hours with a "that's close enough mentality" But in answer to your question I always check like that and then set the mount back to home and get cracking. Link to comment Share on other sites More sharing options...
dawson Posted November 29, 2013 Author Share Posted November 29, 2013 Right, so it is possible. That's useful to know, thank you. Jd Link to comment Share on other sites More sharing options...
Brantuk Posted November 29, 2013 Share Posted November 29, 2013 Once I've got polaris in the little circle, I then turn the RA through 360 degs and it follows the circumference of the bigger circle all the way round. If it doesn't, then adjust alt/az as necessary to get it following the line all the way. Link to comment Share on other sites More sharing options...
dawson Posted November 29, 2013 Author Share Posted November 29, 2013 I think mine may be misshapen after i've tightened it up so tight My polar alignments aren't that bad, so not too worry for now. Thanks both; it's good to know how it should work. Jd Link to comment Share on other sites More sharing options...
+RonC Posted November 30, 2013 Share Posted November 30, 2013 Do you use Polar Finder James as to where the circle should be? Link to comment Share on other sites More sharing options...
dawson Posted November 30, 2013 Author Share Posted November 30, 2013 I use the handset to tell me what hour angle to put it at. James Link to comment Share on other sites More sharing options...
+RonC Posted November 30, 2013 Share Posted November 30, 2013 OK, just a thought. Polar finder is a great free add-on you should give it a go! Link to comment Share on other sites More sharing options...
dawson Posted November 30, 2013 Author Share Posted November 30, 2013 Do you think the information on polar finder will be more accurate than the handset? I've set my RA setting circle so at transit it read 00:00; using the hour angle from the handset when I've input the date and time and location i just rotate the RA to that time and the Polaris circle is exactly where the handset suggests it should be (i now don't even bother to check it's there as i know it is. I then just attach my right angled polar scope device and centre polaris. The right angle viewer is left-right inverted but it doesn't matter as i'm not altering the RA axis at this time, just the elevation and azimuth to centre. James Link to comment Share on other sites More sharing options...
+RonC Posted November 30, 2013 Share Posted November 30, 2013 (edited) Why would you centre Polaris?? It's the NCP that needs centring I fact I use the Polar Align app on the iPhone, just turn the little circle to that point, Azi and Alt adjust, done! Edited November 30, 2013 by Ron Clarke Link to comment Share on other sites More sharing options...
dawson Posted November 30, 2013 Author Share Posted November 30, 2013 Centre Polaris in the small Polaris circle is what i meant Link to comment Share on other sites More sharing options...
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