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Which is the least noisiest of these telescopes?

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#1 NorthWolf

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Posted 15 January 2013 - 12:52 PM

I really dont like the idea of noise coming out of my mount-telescope, especially in the summer months because I dont want neighbors peaking at 2am and wondering what the heck is this guy doing??

Can someone tell me which of these telescopes would make the least noise when tracking or slewing? Which least noisy mount, for around 500$, used or new, would be a good buy for someone who wants to do mostly visual with an occasional deep sky astrophoto?

1- Nexstar 8SE
2- CPC 925
3- Meade LXD75 mount w/9.25
4- CGE-5 9.25
5- CGE-6 9.25
6- CGEM 9.25
7- Orion XX12GT
8- Orion XX14GT

PS> I read the LX75 has a Quiet Slew mode, do the others have that?

Thanks.

#2 RTLR 12

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Posted 15 January 2013 - 01:19 PM

My CGEM is whisper quiet next to my SE mount. It seems as if the SE will wake the dead some nights. It's louder than my CG-5s. Don't have experience with the others.

Stan

#3 dennilfloss

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Posted 15 January 2013 - 02:40 PM

I was amazed on videos I've seen at how noisy the Nexstar and iOptron go-to mounts are. Here I was, thinking electric motors would mean they're silent but they sound like grinding gears. Real downer that.:(

#4 wolfman_4_ever

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Posted 15 January 2013 - 03:40 PM

Ya, my nexstar I use to have was pretty loud. Hypertuning the mount really helps a lot.. I had to take my hypertuned CG5 into Celestron (upstairs to Eng!) once, troubleshooting an issue. When the CG5 started to slew, the engineer commented that it was the quietest cg5 he had ever heard..

#5 fuzzystuff4ever

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Posted 15 January 2013 - 04:46 PM

If you want quiet, try and find an Ultima 2000; you can barely hear it slewing from 10 ft. away.

Brian

#6 jrbarnett

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Posted 15 January 2013 - 05:57 PM

How about a non-driven alt-az mount for quiet times?

I just ordered a DSV-3 with encoders. With a Sky Commander it should do a nice job with SCTs and refractors, make no sound, and require minimal electricity to operate the DSC.

- Jim

#7 NorthWolf

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Posted 15 January 2013 - 06:02 PM

Wow...I never knew all these tracking mounts were this noisy...how the heck am I going to go out at night when I have nosy neighbors..

#8 NorthWolf

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Posted 15 January 2013 - 06:12 PM

http://www.youtube.c...h?v=Ij1GwoKt-Nw

http://www.youtube.c...iswK0JkCq8&NR=1

http://www.youtube.c...feature=related

http://www.youtube.c...h?v=L5yIh4EBOQY

Wow...I completely forgot about this... No idea how I'm going to view in the backyard after 11pm-4am without neighbors slamming their windows shut in the summer...

I've done the whole star hopping thing with a normal dob and wanted to go auto this time but this is......

Am reading this thread, hopefully there is a solution..perhaps a better mount? http://www.cloudynig...Board=lxd55&...

#9 cn register 5

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Posted 15 January 2013 - 07:29 PM

The Celestron mounts - at least the GEMs - all have a reduced maximum slew rate option, you can make them as quiet as you like.

Chris

#10 Starhawk

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Posted 15 January 2013 - 07:38 PM

You can barely see it moving, also.

The CGEM is pretty quiet and pretty fast. It's completely silent while tracking. The CPCs are surprisingly quiet.

-Rich

If you want quiet, try and find an Ultima 2000; you can barely hear it slewing from 10 ft. away.

Brian



#11 Cliff Hipsher

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Posted 15 January 2013 - 07:43 PM

Dude, you have some picky neighbors. I can fire up my Harley at 2 AM and no body cares....

With that being said, just go talk to them. If they are so crabby they won't talk, then who cares?

#12 fuzzystuff4ever

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Posted 15 January 2013 - 07:53 PM

Mine moves and finds objects just fine, thank you.

[quote name="Starhawk"]You can barely see it moving, also.

#13 NorthWolf

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Posted 15 January 2013 - 08:25 PM

Is the CPC 925 quieter than an eq mount?

I'll leave it up to you guys to choose a decently silent mount under 700$ used or new. Let me know your top picks if possible, thank you.

#14 dennilfloss

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Posted 15 January 2013 - 08:32 PM

So noisy...

http://www.youtube.c...h?v=_in7SqLaGTg

#15 NorthWolf

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Posted 15 January 2013 - 08:51 PM

So noisy...

http://www.youtube.c...h?v=_in7SqLaGTg


There's no way I'd be able to use that in my backyard without freaking people out. Wish I lived in the country or in a neighborhood that's not crammed up the butt with houses.

#16 RTLR 12

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Posted 15 January 2013 - 09:42 PM

My CG-5s were about in the 70db range out of the box. Normal human speech is 60 to 65db. With some adjustment and some tweaking they are down to the 50db range. Custom rate 9 set at 2.68 of 3.00.

Stan

#17 rigel123

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Posted 15 January 2013 - 09:53 PM

It's a bit above your price range but an Orion Sirius would meet your noise level needs. Orion's website has a demonstration on both mounts (Atlas and Sirius) and that's about how my Atlas sounds (the big brother of the Sirius)or should I say, there is almost no sound.

http://www.youtube.c...ature=endscreen

#18 CJK

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Posted 15 January 2013 - 10:09 PM

I will confirm that the Sirius is very quiet when slewing. Significantly quieter than my Mach1, in fact.

-- Chris

#19 frozen.kryo

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Posted 15 January 2013 - 10:45 PM

I would say that the CGE, while not really silent, has a more 'agreeable' noise.

Here is a clip from youtube: CGE Mount

Don't mind the RA slew as it's fighting against 50lbs of counterweights. Listen to the DEC slew instead. Mine sounds even quieter than this.

I've no experience with the CGEM, but my CGE is much MUCH quieter than the CG5. My neighbors used to complain about the CG5. Now they don't even hear the CGE.

My experience.

EDIT: Just re-read your post, and no way can a CGEM or a CGE be had for $500.00, used or new.

#20 Mike Clemens

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Posted 15 January 2013 - 10:48 PM

my AP http://youtu.be/0zCJjQ9yO6g
is definitely audible by the neighbors

#21 RTLR 12

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Posted 15 January 2013 - 10:52 PM

The Orion mounts slew at a rate of 3.4º/sec while the CGEM slews at a rate of 5º/sec. If you slow the CGEM down to the Orion speed they are equally quite. Somewhere in the 40db range.

Stan

#22 NorthWolf

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Posted 15 January 2013 - 11:38 PM

Yes I definitely need to get it down to the 40db range. Now I need to figure out which mount under say 700$ has an OPTION that can switch targets in SLOW MOTION. No slow motion = forget about it! Also, the hand controller would need to be muted, I hope someoene has thought of that at least.

#23 dennilfloss

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Posted 16 January 2013 - 03:30 AM

Here's the noise of a Cube Pro. It's times like this I am so thankful for online videos of gear in action.

http://www.youtube.c...h?v=qlVoP1IdAG0

#24 NorthWolf

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Posted 16 January 2013 - 05:05 AM

Here's the noise of a Cube Pro. It's times like this I am so thankful for online videos of gear in action.

http://www.youtube.c...h?v=qlVoP1IdAG0

I'm sure once my neighbors hear that they'll be excepting a countdow t minus 10..9..8..7..6..5..4..3..2..1.. Followed by somekind of missile to come out shortly after..Forget about that one lol! :tonofbricks:

#25 NorthWolf

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Posted 16 January 2013 - 05:09 AM

Here's the noise of a Cube Pro. It's times like this I am so thankful for online videos of gear in action.

http://www.youtube.c...h?v=qlVoP1IdAG0

I'm sure once my neighbors hear that they'll be excepting some kind of countdown afterwards t minus 10..9..8..7..6..5..4..3..2..1.. Followed by a missile coming out shortly after..Forget about that one lol! :tonofbricks:








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