Harmonic mounts and payload capacity Pegasus NYX-101

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chris_g United States of America
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Harmonic mounts and payload capacity Pegasus NYX-101

#1

Post by chris_g »


Anyone know if these types of mounts are limited to the 50% payload capacity or even better yet have any experience using one?

I've seen one now that claims to handle 20kg with no counter weights and if you add counter weights it can handle 30kg.

Pegasus NYX-101

I will be eventually adding a third mount to my kit and this one would be ideal if it lives up to that hype
Image Cam: Canon 6D (Ha mod), 600D (Stock), SVBony SV405CC
Image OTA: EvoStar ED80, WO Z73, C8-A XLT
Mount: EQ6-R Pro Pier, AZ-EQ5 Pro Pier
Guide OTA: Orion 60mm, WO 32mm, ZWO OAG, SV501P
Guide Cam: ZWO 120mm, 290mm mini
EAA OTA: Orion ST80
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EP: Baader Hyperion Modular Set
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Re: Harmonic mounts and payload capacity Pegasus NYX-101

#2

Post by JayTee »


∞ Primary Scopes: #1: Celestron CPC1100 #2: 8" f/7.5 Dob #3: CR150HD f/8 6" frac
∞ AP Scopes: #1: TPO 6" f/9 RC #2: ES 102 f/7 APO #3: ES 80mm f/6 APO
∞ G&G Scopes: #1: Meade 102mm f/7.8 #2: Bresser 102mm f/4.5
∞ Guide Scopes: 70 & 80mm fracs -- The El Cheapo Bros.
∞ Mounts: iOptron CEM70AG, SW EQ6, Celestron AVX, SLT & GT (Alt-Az), Meade DS2000
∞ Cameras: #1: ZWO ASI294MC Pro #2: 662MC #3: 120MC, Canon T3i, Orion SSAG, WYZE Cam3
∞ Binos: 10X50,11X70,15X70, 25X100
∞ EPs: ES 2": 21mm 100° & 30mm 82° Pentax XW: 7, 10, 14, & 20mm 70°

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Lady Fraktor Slovakia
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Re: Harmonic mounts and payload capacity Pegasus NYX-101

#3

Post by Lady Fraktor »


There are multiple threads on the pros/ cons of these mounts on CN
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chris_g United States of America
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Re: Harmonic mounts and payload capacity Pegasus NYX-101

#4

Post by chris_g »


Lady Fraktor wrote: Fri Jan 27, 2023 9:04 pm There are multiple threads on the pros/ cons of these mounts on CN

Thank you for the reminder of CN, I usually only go there for the classifieds. :) If anyone else is interested, includes responses from Pegasus as well, very good resource.

https://www.cloudynights.com/topic/8184 ... nic-mount/
JayTee wrote: Fri Jan 27, 2023 8:57 pm Check out this great article.

https://www.bintel.com.au/harmonic-driv ... pe-mounts/
Awesome, now I understand the high weight capacity. My only real concern now is PE at the longer focal lengths with this type of mount. I haven't done anything with guiding other than what's default. And learning where in the sky to calibrate at!

Clear Skies,
Chris
Image Cam: Canon 6D (Ha mod), 600D (Stock), SVBony SV405CC
Image OTA: EvoStar ED80, WO Z73, C8-A XLT
Mount: EQ6-R Pro Pier, AZ-EQ5 Pro Pier
Guide OTA: Orion 60mm, WO 32mm, ZWO OAG, SV501P
Guide Cam: ZWO 120mm, 290mm mini
EAA OTA: Orion ST80
EAA Cam: SVBony SV705C
EP: Baader Hyperion Modular Set
Filters: L-Pro Canon EOS C, L-eNhance, L-Pro, Optolong Ha 7mm, Optolong Oiii 6.5mm, Optolong Sii 6.5mm, ES H-Beta
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Re: Harmonic mounts and payload capacity Pegasus NYX-101

#5

Post by TexasStar »


I am in the market right now and looking at the ZWO AM5. Everything I am reading is saying that they do handle the higher weights and the counter weight is to keep the whole thing from actually tipping over at an increased "moment arm".
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Re: Harmonic mounts and payload capacity Pegasus NYX-101

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Post by chris_g »


TexasStar wrote: Mon Mar 27, 2023 3:15 am I am in the market right now and looking at the ZWO AM5. Everything I am reading is saying that they do handle the higher weights and the counter weight is to keep the whole thing from actually tipping over at an increased "moment arm".
I don't know if I would buy a mount that the company says not to use for much more than 900mm focal length. There are others at roughly the same price point ore perhaps a little more expensive that are more robust, and the company doesn't bad mouth it. I researched the Nyx-101 and the company had it guiding a C-11 at 2800mm focal length with good guiding results. The last I knew about teh AM5, it would only work with the ASI Air but I may be wrong about that. I stopped looking at it when ZWO said not to go out much past 900m focal length.

Food for thought...

Clear Skies,
Chris
Image Cam: Canon 6D (Ha mod), 600D (Stock), SVBony SV405CC
Image OTA: EvoStar ED80, WO Z73, C8-A XLT
Mount: EQ6-R Pro Pier, AZ-EQ5 Pro Pier
Guide OTA: Orion 60mm, WO 32mm, ZWO OAG, SV501P
Guide Cam: ZWO 120mm, 290mm mini
EAA OTA: Orion ST80
EAA Cam: SVBony SV705C
EP: Baader Hyperion Modular Set
Filters: L-Pro Canon EOS C, L-eNhance, L-Pro, Optolong Ha 7mm, Optolong Oiii 6.5mm, Optolong Sii 6.5mm, ES H-Beta
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Re: Harmonic mounts and payload capacity Pegasus NYX-101

#7

Post by TexasStar »


chris_g wrote: Tue Mar 28, 2023 2:47 pm
TexasStar wrote: Mon Mar 27, 2023 3:15 am The last I knew about teh AM5, it would only work with the ASI Air but I may be wrong about that. I stopped looking at it when ZWO said not to go out much past 900m focal length.

Food for thought...

Clear Skies,
Chris
I heard that too and that was a deal breaker for me, but I asked ZWO directly and they said it has been updated and will work with NINA. The 900m focal length issue is a new one though.
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Re: Harmonic mounts and payload capacity Pegasus NYX-101

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Post by chris_g »


The practical limit of 900mm focal length was on the product page. I see they changed the description now to say use a bigger tripod for the heavier scopes "to improve overall stability" and are sporting a C11 on the product page showing the image taken at 900mm. They also updated the product page to include ascom/indi support. That was not there when they first introduced the mount. They rushed it to market.

Nope, not going to sway me now. They should not have put that limit to it in the beginning. Or perhaps fully tested it before bringing it to market. I watched the videos for the Nyx-101. It was fully tested for load capacity before bringing to market. That one is more expensive though, but it can carry up to 60 pounds, 40 without counterweights. I doubt a C11 would perform very well on the AM5. It's 27.5 pounds by itself, now let's add some gear to it. The C11 in the pic has no additional gear on it. Highly unlikely in the field for an imager. I added a linear bearing focuser to my C8, 2.5 pounds, a second rail, another pound, computer, camera and some additional equipment. Now you have to add counterweights to carry it and you're really pushing out to its limits.

What's really interesting though about that photo on the web site showing the C11 doesn't even have a guide camera on it. Obviously, a studio shot for marketing after they realized they shot themselves in the foot, IMHO, with the limited focal length.

I usually don't buy from a company that can't market a product properly. Their other flagship product lines also had issues when first introduced. Another reason why I tend to avoid ZWO.

Clear Skies
Chris
Image Cam: Canon 6D (Ha mod), 600D (Stock), SVBony SV405CC
Image OTA: EvoStar ED80, WO Z73, C8-A XLT
Mount: EQ6-R Pro Pier, AZ-EQ5 Pro Pier
Guide OTA: Orion 60mm, WO 32mm, ZWO OAG, SV501P
Guide Cam: ZWO 120mm, 290mm mini
EAA OTA: Orion ST80
EAA Cam: SVBony SV705C
EP: Baader Hyperion Modular Set
Filters: L-Pro Canon EOS C, L-eNhance, L-Pro, Optolong Ha 7mm, Optolong Oiii 6.5mm, Optolong Sii 6.5mm, ES H-Beta
Session Control: Mini PC/Win11 Pro, APT 4.1, PHD2 2.6.10
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Re: Harmonic mounts and payload capacity Pegasus NYX-101

#9

Post by JayTee »


When I read about the 900mm limit I had a thought that immediately came to mind. As focal lengths get longer, every drive anomaly gets magnified! Does this drive have a low-level vibration that becomes apparent at 900mm and above? I'm curious.

Cheers,
∞ Primary Scopes: #1: Celestron CPC1100 #2: 8" f/7.5 Dob #3: CR150HD f/8 6" frac
∞ AP Scopes: #1: TPO 6" f/9 RC #2: ES 102 f/7 APO #3: ES 80mm f/6 APO
∞ G&G Scopes: #1: Meade 102mm f/7.8 #2: Bresser 102mm f/4.5
∞ Guide Scopes: 70 & 80mm fracs -- The El Cheapo Bros.
∞ Mounts: iOptron CEM70AG, SW EQ6, Celestron AVX, SLT & GT (Alt-Az), Meade DS2000
∞ Cameras: #1: ZWO ASI294MC Pro #2: 662MC #3: 120MC, Canon T3i, Orion SSAG, WYZE Cam3
∞ Binos: 10X50,11X70,15X70, 25X100
∞ EPs: ES 2": 21mm 100° & 30mm 82° Pentax XW: 7, 10, 14, & 20mm 70°

Searching the skies since 1966. "I never met a scope I didn't want to keep."

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chris_g United States of America
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Re: Harmonic mounts and payload capacity Pegasus NYX-101

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Post by chris_g »


JayTee wrote: Wed Mar 29, 2023 6:22 pm When I read about the 900mm limit I had a thought that immediately came to mind. As focal lengths get longer, every drive anomaly gets magnified! Does this drive have a low-level vibration that becomes apparent at 900mm and above? I'm curious.

Cheers,
This lesson I am learning with the C8 at 1565mm. I had a full good night last night with it for the first time but had to delete about 15 out of 45 subs. Watching one sub have nice round stars then the next sub is misshapen and the next couple of subs are good, then another egg. LOL! PEC training should help with that. And the Rowen belt mod for the EQ6-R, I wonder how much that will improve it.. I averaged total RMS error of around .4 last night.

I'm curious too about why the initial limit of 900. Perhaps their carbon fiber tripod isn't up to handling the weight? They talk about a beefier tripod to support the higher weight loads.
Image Cam: Canon 6D (Ha mod), 600D (Stock), SVBony SV405CC
Image OTA: EvoStar ED80, WO Z73, C8-A XLT
Mount: EQ6-R Pro Pier, AZ-EQ5 Pro Pier
Guide OTA: Orion 60mm, WO 32mm, ZWO OAG, SV501P
Guide Cam: ZWO 120mm, 290mm mini
EAA OTA: Orion ST80
EAA Cam: SVBony SV705C
EP: Baader Hyperion Modular Set
Filters: L-Pro Canon EOS C, L-eNhance, L-Pro, Optolong Ha 7mm, Optolong Oiii 6.5mm, Optolong Sii 6.5mm, ES H-Beta
Session Control: Mini PC/Win11 Pro, APT 4.1, PHD2 2.6.10
Processing: PixInsight, DSS 4.2.6, Adobe PS CC, Astronomy Tools Action Set, Star Spikes Pro
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