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Re: Complete Setup From A to Z

PostPosted: Wed Feb 01, 2012 2:08 pm
by rwg
Well I did wonder if I would need to have the light source coming directly along the optical axis of the scope for it to be accurate for the alignment, but I found I didn't get a clear projected image when I did that, it was much clearer when coming from an angle. I'll have another play when I re-check the polaris hour angle setting, since I need to do that anyway.

Robin

Re: Complete Setup From A to Z

PostPosted: Sun Feb 26, 2012 9:23 pm
by PHATTANGLO
Congratulations to Dion on a fantastic set of tuition videos.
I am using them to start some basic adjustments on my goto EQ3-2 mount e.g marking the mount for the park position and centreing the polarscope.
The mount is stored permanently in a shed and I think the mounts grease must have thickened with the cold as it proved difficult to balance after doing the park position marking.
Considering the very simple construction of the mount compared to a higher spec mount is there any value in venturing further, for instance stripping and re-greasing
Am I right in thinking that things like Coma correction adjustment is excessive for a goto mount of this quality used purely for observing

Re: Complete Setup From A to Z

PostPosted: Sun Feb 26, 2012 9:26 pm
by Dion
Coma correction is a scope issue, but if you mean cone error, then why not, it's simple to do, and in all honesty, I think a strip and regrease of a mount that is definitely showing signs of old age is a good move and will breathe new life into it. But you'll need plenty of turps and a toothbrush lol, I found a paint roller tray is a fantastic tool for doing the degreasing.

Re: Complete Setup From A to Z

PostPosted: Sun Feb 26, 2012 10:01 pm
by PHATTANGLO
Oops silly me, cone error of course.
I would say by the amount of use I get from my gear the mount is pretty much as new, so there shouldn't be any wear & tear as such.
If I do a strip and re-grease with lithium would there be a noticable difference and if so what else would you recommend I try from the tuition videos, I don't do any imaging just observing.

Re: Complete Setup From A to Z

PostPosted: Sun Feb 26, 2012 10:26 pm
by Malamuteboy
Dion wrote:Coma correction is a scope issue, but if you mean cone error, then why not, it's simple to do, and in all honesty, I think a strip and regrease of a mount that is definitely showing signs of old age is a good move and will breathe new life into it. But you'll need plenty of turps and a toothbrush lol, I found a paint roller tray is a fantastic tool for doing the degreasing.



I used the kitchen sink. Ooops. I nearly had my Crown jewels removed. Sal was not happy!!!!!!!!!!!!!!! :notaclue: Who ? Me ?

Re: Complete Setup From A to Z

PostPosted: Wed Feb 29, 2012 9:20 pm
by Robak
Hi all,

On page seven of this thread, 23 July 2011 (ish), worcspaul wrote about the posibility of using Synscan to aid the polar alignment process using the "show position" utility. I was wondering if there was any further developments in this, as it would be extremely useful!

Also, does anyone know if a polarscope or polarscope reticle exists, that has the polaris circle marked at 15 degree intervals as you see it in the polar finder program? It would make polar alignment so much easier for the EQ5 mount, using Dion's excellent method shown in the tutorial videos.

Just a thought, and sorry to post here.

Rob

Re: Complete Setup From A to Z

PostPosted: Thu Mar 01, 2012 11:33 am
by crabtreegreen
Had my NEQ6 mount out last night for the first serious attempt at Polar Alignment and Dion's Tutorial's were invaluable. Had a few hiccups along the way with SkyScan alignment but got there in the end and had some stunning views of Venus, Jupiter, the Moon and Orion. Unfortunately where we positioned the scope meant that Mars was hidden from view till the early hours. Had no problem slewing between stars and planets but it was way off in finding the Moon but still I am pretty chuffed with my first attempt, ably assisted by my lad. Has given me the confidence to press on and can't wait to get into some astro photography but think that I will need to practice the alignment quite a more to get that perfect.

Thanks again Dion.

Bernie :))

Re: Complete Setup From A to Z

PostPosted: Thu Mar 01, 2012 3:14 pm
by SpikeJ
Well Bernie that makes two of us. My NEQ5 had its first outing last night too. Dion's advice and a bit of indoors practice made things relatively easy. But I had the same problem as you with slewing to the moon. It was way off whereas everything else was pretty close. I wonder what we were doing wrong.

Never mind. I managed a couple of decent capture of the moon before the fog rolled in at 10 o'clock.

Re: Complete Setup From A to Z

PostPosted: Thu Mar 01, 2012 3:20 pm
by Dion
Glad it all helped, I used to get that with the moon on synscan sometimes, I think because the moon is an unusual entity, ie it goes at it's own speed and moves around us how it does, maybe the synscan calculations aren't quite spot on, I also used to get it occasionally with the odd planet, it was always ballpark when it did it, just not quite bang on.

Re: Complete Setup From A to Z

PostPosted: Thu Mar 01, 2012 4:33 pm
by SpikeJ
Thanks a million for all the helpful advice, Dion. The moon problem might be related to the fact that I seem to be having trouble with numbers at the moment - It's an NEQ6 that I have, not an NEQ5 - whatever that is.