Ioptron CEM70 Extra counter weight with C-11

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TheButcher United States of America
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Ioptron CEM70 Extra counter weight with C-11

#1

Post by TheButcher »


Hey all,

I was wondering if I would need an extra counterweight for the CEM70 to use my Celestron C-11 (Just for Planetary initially to get started)? I know I will need one when I start some DSO on it, but I just want to be ready for planetary use as soon as it arrives. It comes with a (21 Lb/9.5 kg) counter weight. I just don't want it to be terribly off balance where it could damage the motors. So not worried about tracking initially.

I am using a Rigel Nstep and ZWO385 with a Antaras 1.5x Barlow along with an ZWO ADC. And the tripod is that new Literock 1.75"

Thx all :)
Telescopes:Apertura AD12 Dob + Rings for EQ mode Mounts: iOptron CEM70 w/ Tri-Pier Barlows:GSO 2x Shorty Focuser: Rigel nStep Cameras: ZWO174mm

See All of my Images at: https://astronebula.com/slide-show/
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Re: Ioptron CEM70 Extra counter weight with C-11

#2

Post by JayTee »


I don't think so.

On my CEM 60 with my 6"RC with a 70mm guide scope on top with 2 cameras and an extra 1/2 lb for lateral scope balance (dec axis) (maybe 18 - 20lbs), my 22lb (10 Kg) counterweight is used not even halfway down the counterweight shaft. That's why I'm saying I don't think so.

Cheers,
JT
∞ 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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Re: Ioptron CEM70 Extra counter weight with C-11

#3

Post by TheButcher »


Thanks JT. :)

I was kind of figuring that. Also my EQ6-R should be arriving along with the Literoc tripod tomorrow. I am Still waiting on the mount head to be back in stock for them to ship it. It can be another week+ or so.

Anyway, I was just thinking that I can measure the length of the EQ6 R bar. When I put my C11 on the EQ6-R, I need to use the Extension bar and put the weights down a bit more (but it has a much shorter bar then the ioptron I believe). At least from the photos.
Telescopes:Apertura AD12 Dob + Rings for EQ mode Mounts: iOptron CEM70 w/ Tri-Pier Barlows:GSO 2x Shorty Focuser: Rigel nStep Cameras: ZWO174mm

See All of my Images at: https://astronebula.com/slide-show/
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Re: Ioptron CEM70 Extra counter weight with C-11

#4

Post by JayTee »


My CEM 60 counterweight shaft is 16 3/4" (42.5cm) of useable length.

JT
∞ 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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Re: Ioptron CEM70 Extra counter weight with C-11

#5

Post by TheButcher »


JayTee wrote: Mon Jul 06, 2020 1:10 am My CEM 60 counterweight shaft is 16 3/4" (42.5cm) of useable length.

JT
That is probably the same shaft. I should be good then since the EQ6-R retractable one is about 11" I think and I only needed a few inches more, that is why I used the extender.


Thanks again JT
Telescopes:Apertura AD12 Dob + Rings for EQ mode Mounts: iOptron CEM70 w/ Tri-Pier Barlows:GSO 2x Shorty Focuser: Rigel nStep Cameras: ZWO174mm

See All of my Images at: https://astronebula.com/slide-show/
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