Re: G11 Polar Alignment hole
The inner rotating shaft turns inside the fixed outer housing. When I first took off that plug I noticed the hole was almost half covered. Then wen I starting playing with the HC I saw why...A hole is a hole, ain't a hole...
RB
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Re: Imaging west of the meridian - suggestions.
I think my concerns may have more to do with balancing (the OTA side will now need to be heavy) as well as motor clearances.
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Re: G11 Polar Alignment hole
A round hole drilled through a round shaft makes an appearance of an oval hole only when observed under an angle!! If observed in the direction in which it was drilled, it appears as a round hole!!
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A round hole is drilled through a round shaft makes an appearance of an egg shaped hole around the surface of the round shaft. Nels
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Re: G11 Polar Alignment hole
Yes...we all have this design of the polar bore hole.??
I always wondered why...? I think it is the same kind of offset with the Meade LXD55 mount, but the Orion/Synta Atlas bores it exactly perpendicular....I was expecting it to be perpendicular.? ? ?
At least it is not an egg-shaped hole!??
Best,
On Oct 7, 2017 08:47, "Nels Johnson nhbj6@... [Losmandy_users]" < Losmandy_users@...> wrote:
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A round hole is drilled through a round shaft makes an appearance of an egg shaped hole around the surface of the round shaft. Nels
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Re: G11 Polar Alignment hole
A round hole is drilled through a round shaft makes an appearance of an egg shaped hole around the surface of the round shaft. Nels
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Re: G11 Polar Alignment hole
I have the same problem with my G11. the hole in the DEC axis shaft is only aligned with the hole in the DEC housing when I rotate the DEC by approximately 12 degrees. I'm using a Polar Master to align my mount so it does not effect my polar alignment. Peter 2017-10-07 4:36 GMT+02:00 f4chief73@... [Losmandy_users] < Losmandy_users@...>:
Well, after my lame comment i realized after I connected the Gemini 2
controller, and ran the servo's with the cap, did I realize when the scope
did it's thing the dec shaft is turning inside the outer mount housing
giving that effect. Duh, disregard my post...
Beachbum53
[Non-text portions of this message have been removed]
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Re: G11 Polar Alignment hole
Well, after my lame comment i realized after I connected the Gemini 2 controller, and ran the servo's with the cap, did I realize when the scope did it's thing the dec shaft is turning inside the outer mount housing giving that effect. Duh, disregard my post...
Beachbum53
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Re: G11 Polar Alignment hole
RB,
If you are saying the threads in the black RA clutch? knob are not round and the polar scope opening is also not round this is not likely because you probably could not use the knob to adjust the clutch pressure. So I think you are talking about the actual opening bored through the DEC axis axle shaft which is exposed when the caps are removed.?If you use a caliper or steel rule I think you might find the opening in the DEC axle is probably not egg shaped but round, this is probably a illusion given by the hole having been bored perpendicularly across a round axle shaft. Additionally the opening in the DEC axle is not intended for the polar scope to physically pass through but allows the polar scope optics an unobstructed view on the RA axis of the mount for polar alignment on the NCP. I hope this helps.
Chip??
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Hi,
The serial numbers for G11 and GM8s are found under the round base of the mount head.?
Chip
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Where can I locate the serial number on the Losmandy mount. I'm trying to register this. Thank You
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Update: I believe that the problem is solved. It appears that it was a faulty network cable. Because of your comments, I had a lot of options to consider, now and in the future with other problems. Thanks to you, I have examined for the first time my safety limits and realzed that Gemini 2 default limits are way off from what I need for my telescope and camera,. Man, am I ever grateful for clutches.
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Re: G11 Polar Alignment hole
Mine don¡¯t appear egg-shaped, so I¡¯m not sure what that¡¯s about either. ? ? ? Thanks ? Brian ? ? Brian Valente Brianvalentephotography.com ?
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From: Losmandy_users@... [mailto:Losmandy_users@...]
Sent: Thursday, October 5, 2017 7:20 PM
To: Losmandy_users@...
Subject: Re: [Losmandy_users] Re: G11 Polar Alignment hole? ? Very interesting... and puzzling.? My CG11 has round holes up the RA axis, but (as another owner just wrote) the holes through the counterweight shaft are not lined up with the RA axis at the CWD position.... it requires a slight rotation of DEC from CWD to get the polar scope bore-sight hole to line up.? ?But the holes and RA axis bore are not egg-shaped.?? I can't imagine what the egg-shaped hole could be from.... normally machine-shop equipment does not make such holes!? ? Please post a photo of that in the group's Files sections... then let us know the path to that photo... I'd call Losmandy and ask about that (better if you have your mount's serial number if you can get to that).?? ? On Thu, Oct 5, 2017 at 7:07 PM, f4chief73@... [Losmandy_users] <Losmandy_users@...> wrote: ? The Polar scope has one black cap, and one silver knurled plug covering the mounting hole for the scope.
Take off those two caps and the hole is not true. It's egg shaped not round... I really don't need the Polar scope, but if a person did, it would never fit in that egg shaped hole. I have a photo of it, but don't know how to post it here. That's the best I can explain it. It doesn't affect the scope performance, but I was just wondering why it was like this.
RB
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Re: G11 Polar Alignment hole
Very interesting... and puzzling.? My CG11 has round holes up the RA axis, but (as another owner just wrote) the holes through the counterweight shaft are not lined up with the RA axis at the CWD position.... it requires a slight rotation of DEC from CWD to get the polar scope bore-sight hole to line up.? ?But the holes and RA axis bore are not egg-shaped.??
I can't imagine what the egg-shaped hole could be from.... normally machine-shop equipment does not make such holes!? ?
Please post a photo of that in the group's Files sections... then let us know the path to that photo... I'd call Losmandy and ask about that (better if you have your mount's serial number if you can get to that).??
Best, Michael
On Thu, Oct 5, 2017 at 7:07 PM, f4chief73@... [Losmandy_users] <Losmandy_users@...> wrote:
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The Polar scope has one black cap, and one silver knurled plug covering the mounting hole for the scope.
Take off those two caps and the hole is not true. It's egg shaped not round... I really don't need the Polar scope, but if a person did, it would never fit in that egg shaped hole. I have a photo of it, but don't know how to post it here. That's the best I can explain it. It doesn't affect the scope performance, but I was just wondering why it was like this.
RB
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Re: G11 Polar Alignment hole
The Polar scope has one black cap, and one silver knurled plug covering the mounting hole for the scope.
Take off those two caps and the hole is not true. It's egg shaped not round... I really don't need the Polar scope, but if a person did, it would never fit in that egg shaped hole. I have a photo of it, but don't know how to post it here. That's the best I can explain it. It doesn't affect the scope performance, but I was just wondering why it was like this.
RB
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Re: Imaging west of the meridian - suggestions.
I would not expect any trouble.? Just be sure to set your western limit so in case of unattended operation, your scope will not crash into your mount.??
Best, Michael?
On Oct 5, 2017 16:16, " f@... [Losmandy_users]" < Losmandy_users@...> wrote:
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Any suggestions for imaging on the west side of the meridian? Things to look out for? Any recommended mods for my G-11?
For years I have used my G-11 to image east of the meridian to about 1-1/2 hours west of the meridian. I have trees and other obstructions so going any further west and/or meridian flips were never needed. Also, as a result, I was always able to keep the east (counterweight) side heavy.
Fast forward to next year. I will be moving my observatory to a site a few miles SW of Cody, WY. So Cody's light dome will be in the north east (which is the azimuth where I start my night long runs today), however to the south and west there is just back sky where the Milkyway runs down into the horizon. That is where I intend to image after the move... So, my imaging runs will most likely start ¡Ö1-1/2 hours east of the meridian and end just above the western horizon.
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Imaging west of the meridian - suggestions.
Any suggestions for imaging on the west side of the meridian? Things to look out for? Any recommended mods for my G-11? For years I have used my G-11 to image east of the meridian to about 1-1/2 hours west of the meridian. I have trees and other obstructions so going any further west and/or meridian flips were never needed. Also, as a result, I was always able to keep the east (counterweight) side heavy. Fast forward to next year. I will be moving my observatory to a site a few miles SW of Cody, WY. So Cody's light dome will be in the north east (which is the azimuth where I start my night long runs today), however to the south and west there is just back sky where the Milkyway runs down into the horizon. That is where I intend to image after the move... So, my imaging runs will most likely start ¡Ö1-1/2 hours east of the meridian and end just above the western horizon.
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Re: G11 Polar Alignment hole
AFAIK all polar scope holes in the RA axis are normally drilled with the saddle turned sideways for head clearance. At least this is how it has been on all of the GEMs I've owned anyway.?
Chip
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Re: G11 Polar Alignment hole
Anon,
Can you more clearly describe what you mean by ¡°twisted and misaligned¡±.
If you mean that the scope is at an angle when the hole is completely open then that is deliberate as it ensures the scope is not hitting you on the head while using the polar scope.
Regards
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I used my scope, and the Losmandy G11 for the first time tonight. I noticed when I took the caps off of the Polar Viewing hole in the mount that the hole is not true. Looks twisted and misaligned. Is this a normal thing with these? I wouldn't think so. I have a photo of it, but not sure how to post it here.
Thanks
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Re: G11 Polar Alignment hole
That's normal. YIUBHABE to rotate the Dec to align and use the pa scope.?
Brian
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On Oct 4, 2017, at 10:04 PM, f4chief73@... [Losmandy_users] < Losmandy_users@...> wrote:
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I used my scope, and the Losmandy G11 for the first time tonight. I noticed when I took the caps off of the Polar Viewing hole in the mount that the hole is not true. Looks twisted and misaligned. Is this a normal thing with these? I wouldn't think so. I have a photo of it, but not sure how to post it here.
Thanks
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I used my scope, and the Losmandy G11 for the first time tonight. I noticed when I took the caps off of the Polar Viewing hole in the mount that the hole is not true. Looks twisted and misaligned. Is this a normal thing with these? I wouldn't think so. I have a photo of it, but not sure how to post it here. Thanks
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Michael Herman