Page 11 of 15

Re: Complete Setup From A to Z

PostPosted: Sat Dec 31, 2011 2:57 pm
by Malamuteboy
tonymacc wrote:thanks for that. all done and spot on now. :)


No problem. Glad to help out. :shedpwr:

Re: Complete Setup From A to Z

PostPosted: Sat Jan 07, 2012 9:46 pm
by SteveG4iwr
Hi Dion

Great video, it is a real eyeopener for a newbie. A question for you, the azimuth alignment pin is between the legs on the mount as standard. I have moved mine to the hoe above the single leg for ease of alignment. Is there any reason why I should not do that?

Re: Complete Setup From A to Z

PostPosted: Sun Jan 08, 2012 8:21 am
by Malamuteboy
SteveG4iwr wrote:Hi Dion

Great video, it is a real eyeopener for a newbie. A question for you, the azimuth alignment pin is between the legs on the mount as standard. I have moved mine to the hoe above the single leg for ease of alignment. Is there any reason why I should not do that?


Hi (not Dion) The answer is no. You can put it where it suits best for your particular situation.

Re: Complete Setup From A to Z

PostPosted: Sun Jan 08, 2012 2:19 pm
by Dion
There's a couple of pros & cons, well, actually there isn't, but many prefer to move the peg over the one leg as they can then point the leg north, but it also allows easier kneeling access to the polar scope. Some say that it also gives better balance due to the weights being over one leg and reduces the chance of topple, when I was using a tripod though I never bothered to move the peg and I saw no sign whatsoever of stability issues, so it's all down to personal preference.

Re: Complete Setup From A to Z

PostPosted: Sat Jan 28, 2012 11:30 pm
by rwg
Just been working my way through part 1, and what with it being dark and cloudy had to skip the reticule alignment, and was going to leave out the bit where you get the polaris circle right at the bottom until I realised there is a really easy way to do this without a star or distant object:

  • Take out the north side altitude bolt and slacken the south side bolt to let the altitude reading go back to zero degrees - the polarscope should now be horizontal.
  • Set the mount up level with the polarscope pointing eyepiece towards a painted wall
  • Shine a bright torch through the 'sky' end of the polarscape - this should project the polarscope reticule onto the wall (you may need to dim the lights). Keep your eye clear of the eyepiece while doing this...
  • Get some sort of vertical line on the wall - use a boat level, a laser level, draw a line, use a door frame, etc.
  • Turn the RA axis until the cross lines up with your vertical on the wall and the polaris circle is at the top on the wall

Now if you turn off the torch (don't want to blind ourselves) and look through the eyepiece of the polarscope, you'll see the polaris circle perfectly at the bottom. You can now proceed with adjusting the RA clock as per the tutorial :). Provided you level the mount correctly in the direction parallel to the wall, this should be accurate - it doesn't matter if the mount points at the wall at precisely 90 degrees or if the polarscope isn't quite horizontal.

cheers for the tutorial, enjoying it!

Robin

Re: Complete Setup From A to Z

PostPosted: Sun Jan 29, 2012 2:03 am
by Dion
What a clever idea, well done mate. :-BD

Re: Complete Setup From A to Z

PostPosted: Sun Jan 29, 2012 9:16 pm
by rwg
I think I have managed to get the reticule aligned using the same technique too - I just need to test my alignment on a real star to check it has worked out properly. If it is OK then it's a much easier way to do things as you can do it _with the lights on_... No more feeling for tiny hex grub screws in the dark :)

Robin

Re: Complete Setup From A to Z

PostPosted: Sun Jan 29, 2012 10:22 pm
by Dion
Even easier with the shed polarscope mod kit ;)

Re: Complete Setup From A to Z

PostPosted: Wed Feb 01, 2012 1:57 pm
by rwg
Sadly the alignment of the reticule using the projection method didn't seem to be accurate - I checked it out on the chimney pot on the house across the road yesterday. The trick for finding the position where polaris is at the bottom does work nicely though.

cheers,


Robin

Re: Complete Setup From A to Z

PostPosted: Wed Feb 01, 2012 2:01 pm
by Dion
I wonder if you could make an arrangement with a barlowed laser and connect it to the polar scope and project that, then center it using RA rotation, much like collimating. Could be an idea.