Telescope Reviews: LXD55 Polar Scope Issues

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Cow Jazz
professor emeritus

Reged: 11/24/03

Loc: Toronto, Ontario

LXD55 Polar Scope Issues
#3187946 - 06/28/09 11:19 PM

Hi,Gang.
I have a (used) LXD55 with a "loose" polar scope. The rubber O ring that surrounds the polar scope inside the mount has come out, and I can't seem to get it back in place. I've had problems with the polar scope not rotating to see the correct alignment marking orientation. Any ideas to correct these 2 problems will be greatly appreciated. Thanks.

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yock1960
Carpal Tunnel

Reged: 06/22/08

Loc: Ohio, USA

Re: LXD55 Polar Scope Issues new

[Re: Cow Jazz]
#3188295 - 06/29/09 06:43 AM

Hi,

I have an LXD75 and have only had the polar scope out once, so my memory is not to be depended on too much. I don't remember an o-ring, there are three allen set screws that hold mine and also are used to align it. Also, to test the alignment, I rotated the RA axis, not just the polar scope.

Hope this helps

Steve

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Cow Jazz
professor emeritus

Reged: 11/24/03

Loc: Toronto, Ontario

Re: LXD55 Polar Scope Issues new

[Re: yock1960]
#3188674 - 06/29/09 11:55 AM

Hi, Steve,
Yes, I've also previously aligned the polar scope using those 3 screws, and rotating the RA to change the alignment etching, but don't most polar scopes rotate by themselves for proper alignment (this one doesn't seem to)? I'd like to get a reasonably accurate polar alignment so I can do some longer exposure piggy-back astrophotography (at least 2 minutes with a 200mm lens on my Canon XT). Any ideas and comments will be much appreciated.

Post Extras:

yock1960
Carpal Tunnel

Reged: 06/22/08

Loc: Ohio, USA

Re: LXD55 Polar Scope Issues new

[Re: Cow Jazz]
#3189301 - 06/29/09 04:55 PM

Quote:

but don't most polar scopes rotate by themselves for proper alignment (this one doesn't seem to)?

You've got me there. This is definitely fiddly to align, it's a budget mount, par for the course I guess.

Steve

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Charlie Hein
Postmaster

Reged: 11/02/03

Loc: 26.06.08N, +80.23.08W

Re: LXD55 Polar Scope Issues new

[Re: Cow Jazz]
#3189369 - 06/29/09 05:29 PM

Quote:

Hi, Steve,
Yes, I've also previously aligned the polar scope using those 3 screws, and rotating the RA to change the alignment etching, but don't most polar scopes rotate by themselves for proper alignment (this one doesn't seem to)? I'd like to get a reasonably accurate polar alignment so I can do some longer exposure piggy-back astrophotography (at least 2 minutes with a 200mm lens on my Canon XT). Any ideas and comments will be much appreciated.

Actually, most of the ones I've experienced are fixed and require you to turn the RA axis to line them up.

Post Extras:

Cow Jazz
professor emeritus

Reged: 11/24/03

Loc: Toronto, Ontario

Re: LXD55 Polar Scope Issues new

[Re: Charlie Hein]
#3190649 - 06/30/09 10:10 AM

Thanks for the info, Charlie. I guess I had seen one mount with a polar scope that did rotate, and thought they all should (sure would be easier if they did).
I still need to figure out how to get the grommet back where it belongs, though. Tomorrow's a holiday up here (Canada Day), so maybe I'll just play with it since we're under rain most of this week.

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