On Wed, Dec 27, 2023 at 09:08 PM, Jim Waters wrote:
It should have been correctly adjusted during assembly.
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Jim W
Phoenix, AZ. USA
Losmandy G11G w/ L6, NINA 3.0 / ASTAP, ASI2600MC Pro, ASI533MM Pro,?Sky-Watcher Scopes, Canon L Lenses.
I¡¯m sure it was just like mine. But then it was boxed and shipped. No telling how many times it was dropped hard in shipping. Scott made this video for a reason. I had the same thing when I got mine. The adjustment is simple. Greg Morris
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It should have been correctly adjusted during assembly.
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Jim W
Phoenix, AZ. USA
Losmandy G11G w/ L6, NINA 3.0 / ASTAP, ASI2600MC Pro, ASI533MM Pro,?Sky-Watcher Scopes, Canon L Lenses.
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Thank you both and glad to hear that is normal! I'll go find that post by Brian? :-)
I'll be imaging with this 811G whenever the skies are clear next time. and thanks for those PHD2 tips!
Yue
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We got a very good explanation of this from Brian Valente maybe 18 months ago (I'm not sure).? Basically, you are feeling the effect of the spring-loaded worm.? It has some flexibility and is normal.
The other thing that will happen, when you are calibrating PHD2, is that the backlash will seem very large when calibrating, but actually, small corrections are made effectively.? Tell PHD2 to compensate for backlash in dec.? The effect of this particular mechanism seems to be that backlash seems to be large for large, sudden movements, but not for small ones.
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I have a G11G and it has Dec backlash.? I have had it 9 months and have not adjusted anything.? I balance the scope so it is a bit camera heavy.? Sometimes, depending on where in the sky I am pointing at, after a dither it takes sometime to clear the backlash.? I think its a known issue and in gear box, not the worm.? Before calibrating PHD2 I move the Dec axis north.? After calibration I run the guiding assistant and it gives me a backlash of 1300ms or so.?
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Hi there,
New to Losmandy - just received my first one today, an 811G and just doing some indoor tests after I assembled it.
I've noticed there seems to be quite a bit backlash in the DEC. I did tighten the clutch but still I can move the DEC by turning the counterweight shaft, and can even hear a sound when it moves, sounds like it is bouncing between gear teeth...
I understand this particular 'issue' has been reported probably too many times but still I'm a bit concerned - is this backlash normal, or I need to do some adjustments myself?
Thanks a bunch!
Yue
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Re: Askar 185 APO scope on a G11T will it work good
Yes, the same money will get you a with well known quality, half the weight, 29.5" long with dew shield retracted and 35" long when extended. Also, you have a domestic location for repair and adjustment.
Solstice?celebrations start tonight!
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Merry Christmas to all and big thanks for all your efforts in making the Losmandy mounts the best!
Daniel
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Happy Holidays and clear skies!
-Wayne
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On Sat, Dec 23, 2023 at 08:20 PM, Paul Kanevsky wrote:
Happy Holidays and a Happy New Year, folks!
Hope you get to spend some quality time with your friends and family and many clear nights to enjoy the stars!
Thank you, Paul. And the same to you and the rest of the Losmandy community. John ? -- _____________________________________________________________________________________________________________________________________________________________________________ Losmandy G11G2 on pier; refurbed Losmandy G11 with OnStep controller; SkyShed design roll-off observatory; ZWO ASI2600MM-P; ZWO ASI071MC; Sky-Watcher Esprit 100 ED with field flattener; Celestron C925 Edge HD with 0.7XFR, William Optics Zenithstar 61 APO; PHD2, Sequence Generator Pro and PixInsight user
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A Blessed Christmas season everyone.
Joe
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Thank you Merry Christmas everyone.?
On Sat, Dec 23, 2023 at 8:20 PM, Paul Kanevsky <yh@...> wrote: Happy Holidays and a Happy New Year, folks!
Hope you get to spend some quality time with your friends and family and many clear nights to enjoy the stars!
Best Regards,
? ?-Paul
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Happy Holidays and a Happy New Year, folks!
Hope you get to spend some quality time with your friends and family and many clear nights to enjoy the stars!
Best Regards,
? ?-Paul
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Re: Askar 185 APO scope on a G11T will it work good
On Sat, Dec 23, 2023 at 04:19 PM, joe kuhl wrote:
So general consensus is it will be at the upper limit, but should be able to handle imaging at .6 and .75 arc seconds?? That's image scale of a 533mc at 1295mm and 1096mm with reducer.
Honestly, I'm thinking no, G11T is good but that's an awful big load of a scope, focal length wise if not moment arm wise.? Visual, yes, I think, but imaging I'm asking for trouble.
Joe, My thinking would then be to look at other scopes with similar focal lengths that are not as long and heavy.? I also watched their introductory video, and this is a big jump in size compared to their older products. I agree you won't know how your mount performs with all that moment-arm factor until you try it.? John ? -- _____________________________________________________________________________________________________________________________________________________________________________ Losmandy G11G2 on pier; refurbed Losmandy G11 with OnStep controller; SkyShed design roll-off observatory; ZWO ASI2600MM-P; ZWO ASI071MC; Sky-Watcher Esprit 100 ED with field flattener; Celestron C925 Edge HD with 0.7XFR, William Optics Zenithstar 61 APO; PHD2, Sequence Generator Pro and PixInsight user
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Re: Askar 185 APO scope on a G11T will it work good
So general consensus is it will be at the upper limit, but should be able to handle imaging at .6 and .75 arc seconds?? That's image scale of a 533mc at 1295mm and 1096mm with reducer.
Honestly, I'm thinking no, G11T is good but that's an awful big load of a scope, focal length wise if not moment arm wise.? Visual, yes, I think, but imaging I'm asking for trouble.
Just me,? Joe
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Re: Askar 185 APO scope on a G11T will it work good
Hey George,?? The camera is an OSC, no filter wheel.? Just reducer spacers, OAG, camera.? What the spacing is I do not know at the moment.? A mini 12vdc computer on top of the scope where all the camera stuff is plugged into.? Simple set up.
Joe
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Re: Askar 185 APO scope on a G11T will it work good
I'd say it's at the limit depending on how it's equipped for AP. That applies to the length, too add the RF, whatever back focuser tube(s) are needed, filter wheel and camera and 55" is easily attainable. Now we're in the 50 pound class.?
The?Astro-Physics 175mm f/8 Starfire and TEC APO180FL f/7 180mm have similar specs and $20k price tags when you can find one.? Astro-Physics recommends the? 110 pound capacity for the Starfire.?
Like John, I question that a scope of this size can be delivered anywhere near that price point. AP has sold,?maybe, 30 Starfires? Gearing up to produce optics of this size involves a large infusion of capital. Unless it's for military purposes, Zi has clamped down on bank loans. Offshore investors are wary of ventures in China.?
10 North Electro-Optics Group Co., Ltd. is a subdivision of NORINCO, a major supplier to the PLA. 10 North has 13,000 employees.?It is headquartered in Xi¡¯an, and has operations in seven provinces; Shaanxi, Henan, Hubei, Zhejiang, Yunnan, Jiangsu and Shandong and Shanghai.?Jiaxing Sharpstar Optical Instrument Co., Ltd. is located?in Jiaxing, Zhejiang province and near both Jiangsu and Shanghai. So there may be some connection.
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Re: Maximum MicroSD Size Gemini 2
On Wed, Dec 20, 2023 at 01:31 PM, Ted Dobosz wrote:
Hi All
I am wanting to do the L6 upgrade on my two GT11 mounts. The kit from Losmandy has an 8gb MicroSD card. I am wanting to use a spare 16gb MicroSD and copy the upgrade contents from the 8gb card for use in the second mount.
Does anyone know what maximum size the Gemini 2 MicroSd slot will accept?
Thanks
Ted?
AFAIK the Gemini 2 requires FAT32 formatted micro SD cards. FAT32 is a single 32GB partition. You can use larger capacity media but Windows cannot natively access more than 32GB and has a 4GB file limit under FAT32. That said there are utilities but why not just buy 32GB micro SD cards, they are cheap and readily available.? ? ? -- Chip Louie Chief Daydreamer Imagination Hardware?
? ?Astrospheric Weather Forecast - South Pasadena, CA?
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Re: Askar 185 APO scope on a G11T will it work good
That¡¯s not a long ¡®frac ¨C it¡¯s only an f7 and about 48¡± long IIRC.?? A very long and heavy old school planetary ¡®frac at f18 or f20 might be another issue., ?
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From: [email protected] <[email protected]> On Behalf Of joe kuhl via groups.io
Sent: 23 December 2023 06:40
To: [email protected]
Subject: Re: [Losmandy_users_io] Askar 185 APO scope on a G11T will it work good? I apologize, this question does not deal with weight, this scope is less than half the mounts capacity.? My question deals with 40 pounds at 48 inches long.? I realize this scope is new and I intend to wait for legitimate reviews.
It is just that weight, physical size and focal length all work against pointing and tracking.?? Looking at Astrobin, I don't see anyone with a G11T doing anything beyond a 130 - 140mm refractor.? TEC for their 180, recommends 10 micron and AP 1100.? Machines with 7.2 RA and Dec gears.?? Both the Askar 185APO and the TEC 180FL are similar in size and weight.
I'm not expecting the Askar 185 to even come close to the TEC 180 optically.
Joe
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Greg
Wayne B.
Paul Kanevsky
Chip Louie
David C. Partridge