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Chet Biggerstaff
journeyman
Reged: 10/17/09
Posts: 9
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I am a bit confused. Ive watched Celestrons videos of the mounts at the trade show and they said the Pro mount has a 90lbs capacity ON THE SCOPE (not on the mount) not including counter weights. Then they say the weight limit on the CGEM is 40lbs but dont say wether thats on the mount or on the scope or wether it includes the counter weights or not. What I want to know is what is the REAL weight capacity of the CGEM mount without counterweights or a tube on it. How much can I put on the mount without running into major issues with AP?
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t.r.
professor emeritus
Reged: 02/14/08
Posts: 577
Loc: Upstate NY
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40# is the weight limit on the saddle, ie. scope,rings,eyepieces and accessories not to include counter weights. This would be the max I would say, for visual observing with reasonable damping times. For imaging, the rule of thumb is half the weight capacity for Celestron mounts.
Vixen rates their mounts, or did at least, for total weight with counter weights included in the figure.
Astro-physics is by far the most conservative in their mount capacity guidelines. Use their figures and you have solid as a rock!
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Present Stable:
Kmart 40mm(first scope @ age 8)
Jason 60mm
C80SS
Tak Sky90II
PST
C6XLT
AP130 "Gran Turismo"
C-11XLT
EQ-2,CG-4,ASGT-5,DenkII's,TV(zoom,plossls,Ethos),Pentax XW's,UO volcano set, ZAOII 4mm,BaaderZoom and other un-notables
"For me, it is far better to grasp the Universe as it really is than to persist in delusion, however satisfying and reassuring."
Carl Sagan
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Chris Erickson
member
Reged: 05/08/06
Posts: 45
Loc: Waikoloa Village, Hawaii
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Just an FYI,
Currently Vixen's mount OTA weight specifications do not include the weight of the counterweights.
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"My Advice is always free and worth every penny!"
-Christopher Erickson
Network Design Engineer
Waikoloa Village, HI 96738
N19°57' W155°47'
Meade 16" LX200 SCT
www.data-plumber.com
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Chet Biggerstaff
journeyman
Reged: 10/17/09
Posts: 9
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So that means that they rate the CGE pro differently? Or was the guy in the video wrong?
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jrcrilly
Refractor wienie no more
Reged: 04/30/03
Posts: 25182
Loc: NE Ohio
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Quote:
So that means that they rate the CGE pro differently? Or was the guy in the video wrong?
The top mount vendors (Astro-Physics, Takahashi, Mountain Instruments, etc.) are more conservative in their ratings than the middle grade gear (Losmandy, Celestron, etc.). The CGE Pro is rated to carry 90 pounds, and it'll do it - but most folks would choose to derate it some for imaging use. An AP or Takahashi mount would be expected to be used for imaging at the rated load or perhaps even a little more.
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John C
Urban Observatory
A&M/Astreya 76mm F/6 APO
TMB/LOMO 80mm F/7.5 APO
Tak FSQ-106N F/5 APO
Meade 178ED F/9 "APO"
Meade ETX-125AT
C14
Teeter 20" F/3.8 truss Newt w/ServoCat
CI-700, NJP, GPDX/SS2KPC, CG5-GT
ST-10XME, DSI Pro
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Chet Biggerstaff
journeyman
Reged: 10/17/09
Posts: 9
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i understand but as $ wont allow one of thoose mounts ill have to stick with the Gem Pro and Cgems i have but looks like ill use the pro for AP instead of the Cgem (although the Cgem does do a great job on the shots ive seen so far)
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jrcrilly
Refractor wienie no more
Reged: 04/30/03
Posts: 25182
Loc: NE Ohio
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Quote:
i understand but as $ wont allow one of thoose mounts ill have to stick with the Gem Pro and Cgems i have but looks like ill use the pro for AP instead of the Cgem (although the Cgem does do a great job on the shots ive seen so far)
What's your proposed load? The CGE Pro is a big, beefy package and a little pricey so I'd stay with the original CGE unless your load will be over 45 pounds or so.
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John C
Urban Observatory
A&M/Astreya 76mm F/6 APO
TMB/LOMO 80mm F/7.5 APO
Tak FSQ-106N F/5 APO
Meade 178ED F/9 "APO"
Meade ETX-125AT
C14
Teeter 20" F/3.8 truss Newt w/ServoCat
CI-700, NJP, GPDX/SS2KPC, CG5-GT
ST-10XME, DSI Pro
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Chet Biggerstaff
journeyman
Reged: 10/17/09
Posts: 9
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My load will be an 11" hd and some sort of 80mm acromat for guide scope along with Sbig 2000 color with AO8 and a 10 spot wheel. option 2 is 11" HD with same spoter scope with dastar lens and my Sony A900 DSLR or Sbig cammera. The Cgem will handle the weight for regular viewing but dont know about AP which is why im currious
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Stew57
member
Reged: 05/03/09
Posts: 82
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I have a CGEM 1100HD. It does not look to be stable enough for ap work. It seems a little shakey to me, even with no wind. Maybe an 8" would be better. I am not setup for imaging yet so this is just visual. I will be looking into a pier to help with the shakes. The ota is fantastic just wish I could have afforded the CGEpro.
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Chet Biggerstaff
journeyman
Reged: 10/17/09
Posts: 9
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I have an old C8 on ther enow and its stable as a rock. Still waiting on my HD11 to ship from store (they say they havent recived their 1st shipment yet and im 5 on the list) I was wondewring how people got the EdgeHD series if they are not shipping yet? Why cant I get one but others can? What did I miss?
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