#Torn between which mount to get
394 messages · Page 1 of 1 (latest)
Currently I am thinking of either:
iOptoron GEM28 - £1,389.00
iOptoron CEM26 - £1,340.00
I like the CEM being center balanced. It seems like it will put less stress on the components over time and of the little tracking data I have found from it, it seems great.
GEM28 is internally identical
Both use belt drive and have really quiet motors and nice keypads for control
These are the Sky-Watcher options which I am a bit wary of due to their quality control...
HEQ5 Pro + Belt mod - £1,199.00
NEQ6 - £1,199.00
EQ6-R Pro - £1,399.00
AZ-EQ5GT Alt Az - £1,279.00
AZ-EQ6GT - £1,699.00 (out of budget)
They sound like coffee grinders when slewing and have terrible keypads in comparison, not that I use the keypad much.
All of them are also super heavy compared to iOptron mounts
So I do think I want to go iOptron. It just seems to suit me better
But I have heard their support is a bit worse and there are occasional issues with quality control. Most of which can be fixed by the user though. The engineers even send PDF so users can safely take the mounts apart. Sky-Watcher on the other hand frowns on that a lot
I think it really is between the GEM28 and CEM26 for me
Like I said, I like the counter balance on the CEM26 a lot. But it also doesn't have internal cable routing like the GEM28
looking at it uniquely from a money and payload point of view the eq6 would be the best choice, but you said that you don't trust skywatcher anymore. Ioptron has that dumb mark up in europe which personally makes me not consider them, you're paying as much as an eq6 but getting almost half the payload
I like the ioptron mounts too, they're light and seem to be reliable but too much extra money for no reason
WHAT??
Three weeks ago, you could still get a gem28 with ipolar + extras for under £1000
If you definitely want ioptron, I would get a cem mount, I see a lot more of those being used than a gem mount and there may be a reason for it.
For the Skywatcher side, I would go for the az eq5gt, it has 75% the payload capacity of the eq6r pro but weighs less than half, and it also has the extra versatility of being a dual propose mount, the heq5 in also a proven mount but I would probably go for the former
My intended scope is going to be the SW Quattro 150p
Weighs about 6kg, probably 7 with my entire setup
I don't plan on going bigger than that ever
So I don't care so much about payload capacity. I just want the highest quality of tracking
Az eq5gt is definitely tempting
AZ mode is kinda useless to me as I dont do visual
It weighs 7.7kg and can take 15kg
£1,279.00
So basically same price as the CEM26 which can take 12kg and weighs 4.5kg
Looks like the Az eq5gt/pro has dual encoders?
@wary jungle seems too good to be true
It does appear to have dual encoders
Ioptron uses users as there beta testers
The encoders aren't up to spec
They are just enough for position not enough for unguided
Ah so false economy then, that sucks
So back to CEM26 as my prime candidate. The encoders are the only thing which made my consider Skywatcher
Unless I can find some proof SW mounts above the EQ35 are significantly better build quality
@topaz zodiac It seems the AZ-EQ5 Pro has a smaller worm gear than both the HEQ5 and NEQ6
You are correct
Yeah I guide with a 50mm scope
I'd go for something bigger tbh
I thought 50mm was pretty standard
I need to be able to carry this in and out of my house so it can't be too heavy
I am only putting about 7kg total payload on
What is that in pounds?
15.4
The heq5 can really good 30 pounds visual ONLY
Get the biggest mount you can afford
I would just take it off the tripod every night
That's what I do
Not that big of a deal
And carry everything separately
Just mark the Balance points
NEQ6 Pro
HEQ5 Pro (with belt mod)
AZ-EQ5GT
Those are the 3 Sky Watcher mounts which are in my budget. But I really don't know if I trust their quality control after the shitty experience I had with the EQ-35
Well your gonna have to tune any of those mounts regardless
If you want something that just works
Your gonna need to spend a lot more
Well i'm fine with tuning things as long as there wont be any defects like my EQ-35 had
I mean
Wonky crown gear causing spikes
It's a crapshoot
Anything synta is a crapshoot
I'm never gonna buy a crappy mount again for that reason
I am still quite partial to iOptron though since my friend has one and I really like how they look. Build quality looks excellent and apparently quality control issues have been fixed
I would avoid ioptron
GEM28 or CEM26 look amazing
That's not enough payload
I'd get something with 30-40 pounds
But rhf
Tbh
I had an ioptron
I'd did not like
The worm gear clutch system is really dangerous
I think thats one of the things they fixed
Well
I would not say that completely
It's not even a clutch
If your not careful you can sheer the worm teeth off
Along with the gear itself
CEM26 has a 26lb payload and resolution of 0.17 arc seconds which is good
Ye
People who guide with heavier scopes than me seem to have good results
I'd get the 28 it has more payload
They are identical internally. Its just an arbitrary number
Yea
In-fact since the 26 is center balanced, theoretically it should be able to take more
PEC will be done in PHD2
PhD 2 usually has a fit
yea
If the mount ppec is turned on
So you gotta guide with it off
Your guiding may suck
But tbh idk if they fixed that issue
No it definitely will, I read about that issue
I think it still happens
Guiding fights with the mount PPEC
But you can do PPEC in PHD2 so it doesn't really matter
I've never done it
Works just as good
I just guided with pec off and it was fine
Your scope is much shorter focal length wise I think
I'm at 714
Hmm now that I think about it more, I dont need that high of a resolution
0.25 arc-second is still well below what I image at
AZ-EQ5 really is very tempting as its only 7.7kg
Ye
oh yeah
The eq5 is much smaller
I would not put a 150 on it
The 130 maybe
Im saying this because I think you'd benefit with a little more payload
Leaves room to grow
I don't have room to grow lol
Well
The 150 is about as big as I can fit
It doesn't look much smaller
AZ-EQ6GT - 15.4kg weight
I'd be having that
For ap
So I'd put like
15 -18 max
Your 130 would work fine
I just wouldn't go much a lot larger than 6 inches
Yeah the SW Quattro 150p should be fine
Yeah, not really into refractors anyway
Yeah they are
I like mine
Just a lot more expensive
Not rlly
Depends on the refractor
You can get a 80mm
For under 900
And it would probably be a triplet
Well one which will match the quality of the equivalent reflector
Well they are for 2 totally different purposes
One is to gather a lot of light one is for sharpness
Imo
Reflectors can be razor sharp if set up properly
You don't need to touch refractors on a regular basis
Nor a reflector once its set up
Maybe every few weeks, just check collimation on a star
Yea
Refractors are like
Every few years
Not even
Some can't be collimated
It really depends
For star clusters I don't see a reason to use a newtonian
Globular I mean
I don't really mind given how much i'm saving. Quattro 150p is £499.00 and comes with a really high quality 0.85x coma corrector.
Ends up being 510mm FL @ F3.4
I can't decide on this damn mount
I have it down to 3 options
- HEQ5 with belt mod
- AZ-EQ5GT
- CEM26
I'm disqualifying the NEQ6 for being too heavy
And HEQ5 voids warranty by belt modding, not that I care that much.
AZ-EQ5GT has less resolution but should still be an excellent mount and it has encoders which is nice for moving it around manually to avoid slewing.
CEM26 is the most expensive of the 3 choices but comes with a ipolar scope, weighs less, is more compact and has center counter weight which theoretically improves tracking a lot by putting even less stress on the axis
But also possibly has worse customer support
And it has a better hand controller
And a better tripod
Disqualifying the AZ-EQ5GT because its got way worse pointing accuracy apparently. And much worse worm wheels
HEQ5 vs CEM26
HEQ5 is 3.2kg heavier
HEQ5 has 135 teeth, CEM26 has 144 (higher reduction) meaning higher theoretical precision
CEM26 is natively belt driven
Both can have their backlash adjusted using external screws, no disassembly required
CEM26 comes with the iPolar camera (but I use SharpCap to do PA normally). Could potentially re-sell it for £200 so there is a plus
Much better hand controller on the CEM26. SynScan is ancient garbage which is a pain in the ass to use
CEM26 has a better tripod
CEM26 is smaller
CEM26 has 1kg less payload capacity
Assuming I sell the iPolar, I might actually profit over the price of the HEQ5
Seems like a no-brainer to me now that I have rationalized it.
CEM26 is a superior mount in everything other than payload capacity by 1kg
Next I want to find out if I can find some data directly pertaining to GEM28 vs CEM26 balancing. Does center balance really lead to better tracking
They use it on their higher end mounts which would indicate so
But I want to see numbers
GEM28 is much more convenient to balance and has internal cable routing
Those are quite appealing but not worth it depending on how center balance affects things
Okay did a lot more research crawling forums
CEM26 has two major issues
It uses 2 grub screws to control RA backlash and they come undone over time causing huge tracking spikes.
iOptron recommends putting loctite on them which to me seems crazy. They shouldn't come loose to begin with
Thats a major design flaw
The second flaw is flexure when slewing the mount. It throws off PA
GEM28 doesn't appear to have the same issues. But there are other people reporting they have no issues at all with their CEM26s
Im going against my own advice I know :p
Yea gem28 or gem 45
The 45 is substantially bigger
Yea
I still don't like ioptron. I had one for a while
I just didn't like it
I had a gem45
For me, both my experiences with Skywatcher products were super bad
I had 2 mounts from them
So I dont really have another choice
I don't have any trust anymore for SW
Unfortunately every mount from a Chinese manufacturer will be a crapshoot
I know people who have had great luck with the eq6r
No alternatives sadly
But also many have been very unhappy
I gotta go to bed
But good luck you'll find something eventually
Okay thanks for the help, your advice gave me a lot to think about
Lmk if you need any help. I'll try to answer or find answers
But ye I'm going to bed
Goodnight
gn
I guess a benefit to iPolar over the guide scope is I can check polar alignment thoughout the imaging session to make sure it hasn't been thrown off by deflection
I can re-do polar alignment when i'm on target even
That by its self is invaluable
I really want a GEM45 but its well over £2k
The GEM28/CEM26 with the beefier tripod will cost me the same as a EQ6-R PRO
£1,399.00 for EQ6-R PRO
£1,529.00 for GEM28
Insane that its more expensive when its most certainly a worse mount
But the weight is just a huge problem
I have an 8kg weight which I use to work out sometimes
That to me feels really heavy
And the EQ6-R is 17kg
So I either go slightly cheaper and get a much worse mount. Or slightly more expensive and get a lighter one...
£1,898.00 for HEM27
But all that money goes into an expensive harmonic drive
DEC is still just the same assembly as the GEM28
There is literally no mount which fits my needs
Every single mount has a problem I dont like
At this price point, how is that even possible...
Screw it. I'll deal with the weight
I think the EQ6-R Pro is worth it given the price. Its currently on offer
The az eq5gt is definitely enough payload, I have seem some people that use larger scopes than yours on the normal eq5 which has half the payload of the az
Its got a much worse worm wheel though, less teeth
If you are fine with ioptron, get the cem26
I don't think iOptron is good value here anymore
I'd be paying the same price as the EQ6R-Pro for the CEM26
I'd be getting a much worse mount in that case
Hmmm, well I'm just saying that all of these mounts will have plenty of payload and all of them will give you room to grow to at least 200mm or a 5 inch frac
I owned heq5 i loved it and thensold it because i got a deal for used neq6 (old eq-6r). 5 looks like a childs mount compared to the 6 😅. I’m using quattro 8 with it. I’m happy.
Yeah, i'm not too worried about the payload aspect
More worried about if i'm going to get a poor quality mount
HEQ5 i've heard there is a chance to get a bad one still, although not as likely as the cheaper ones
EQ-6R i've heard no one complain about
Its so god damn heavy though
I would 100% buy the iOptron if the price wasn't massively inflated here
I really do hate making these decisions. I would like to go cheaper as to have extra money for my newt
Lets say for a minute due to the inflated prices I am disqualifying iOptron
I will list out my choices again
Okay so I immediate discount the two which are gear driven, garbage
AZ-EQ5GT is clearly the lightest but also has that weirdly low resolution despite having the same tooth count as the HEQ5 Pro
And there is nothing to explain the higher payload
Got the EQ6R - I am happy with it. If I would go again - I prolly would try to get one of the strain waves mounts (AM5, HEM, HAE). But also prolly would not sell my EQ6R. It's a goat imho. I haven't even tuned a bit, beause being to noob. But it has approx 0.6ish guiding error right out of the box.
I am just worried about the weight of the EQ6R
Strain wave ones are nice but too expensive for me sadly
I just don't think i'd enjoy taking 17.3kg back and fourth. Normally I keep my rig in one piece and carry the entire thing out
But I guess its not too much of a problem to take it apart
I am just worried if I dont get the EQ6-R Pro i'll end up with another lemon
Theoretically the AZ-EQ5GT should be amazing
But its only £120 less
Honestly, I think its between those two for me
Isn't the az-eq5 design quite old? If you're not even planning in using it in alt az just get the eq6r. So far I'be only seen one person unhappy with it
I just think its too heavy
AZ-EQ5GT is 7.7kg vs EQ6R 17.3kg
@sacred rampart thats mainly the source of my dilemma
EQ6R may well be a better mount and no I won't be using the alt-az functionality
But Skywatcher don't do another mount which satisfies my need for being lighter
It uses the same worm gear as the HEQ5 Pro which is great obviously, can definitely be very accurate. And has belts out the box so no upgrade needed
Screw it. No chances. I don't have to move it far. EQ6-R. Taking the advice of people who know what they are talking about
Thanks for the info all. Closing thread
You won't have any room to grow
with the eq6?
Oh I thought he said heq5
Eq6 you'll be fine for a while
Payload to weight la very low tho
Compared to my mount
Or a ioptron equivalent
how much was the payload on yours?
Hard to explain
astroshop says 23kg
80lb I hope
80kg is a lot
How do I say
wut? 80 kilograms??
The payload on a sb mount is just a suggestion
They actually can hold more than what they are rated for
Up to 50 pounds is only for photographic
80 for a short photographic tube
100 for visual
All pounds
iOptron is not a choice for me due to being massively over priced here
Ah ok
like 2.5k for GEM45
Welp idk then
oh ok so this 80 above was in pounds not kg
But anything up to 50 would work
Yea go for it
I probably wont. The biggest scope i'll put on it is SW Quattro 150p
You gotta worry about torque
You could go 8 Inch Newtonian
But that's about the max I'd put on it
Yeah. 8 inch newts are too expensive for me
they say that the eq6 also is underrated in terms of payload but I'm not too sure
I wouldn't say that
I was originally going to get the SW 150p but then I learned of the Quattro which is a much faster scope
With the coma corrector it will be 500mm @ F3.4
I wouldn't put anything heavier than 40 on it and that would be visual only
Designed to carry up to 12-inch class telescopes with all the accessories the Paramount MyT has an instrument capacity of 23kg and a maximum payload capacity of 45kg (instruments + counterweights).
about the myt
Yes that sounds right
sounds misleading to say 45kg counting the counterweights too
at the same time why would someone use an myt for visual
I'm sure of that, but I don't really get it
I don't either
well I met a guy a week ago that has a c11 and uses it only for visual
I guess if it's a old Newtonian or something that can't be turned into a dob
That would make sense
C11 I can totally see people using it for visual
yeah, at least it's not an edge hd version
The edge is decent for visual
I can notice a difference easily
But tbh the edge is a lot better in terms of qc I think
it's made specifically for imaging so I hope so
It's less of a crapshoot I think