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CGEM pier adapter

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#1 Orion58

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Posted 03 March 2012 - 06:13 PM

Hello CNers;

I hope to break ground on my new observatory in early April. I'm wondering if anyone has used this adapter plate

http://starizona.com...it-P3254C0.aspx

and if so, what are your thoughts on it? I posted this in the "observatory" thread as well.

Any info would be appreciated.

Thanks

#2 Dave Venne

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Posted 03 March 2012 - 09:10 PM

Bruce,

This fall I installed one atop an 8" cement pier. I used 10" J bolts and it's really solid. The adapter itself looks and feels very well made and finished. Below is my TV102 and ST80 mounted for imaging.

Dave

Posted Image

#3 Orion58

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Posted 03 March 2012 - 09:45 PM

Thank you Dave. Couple questions..

1) Did it come with the threaded center rod that holds the mount onto the top adapter plate?
2) Regarding the anchor bolt pattern: looking at your photo it appears that one of the three bolts is supposed to be oriented due south? Is that correct? Also, are the anchor bolts 1/2 inch?

Thanks again and the photo is a great help.

#4 Dave Venne

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Posted 03 March 2012 - 11:39 PM

Bruce,

It did come with a center bolt. I forget if the hex wrench for it was included. Yep, one of the three bolts is on the south side, and they're all 1/2 inch. The one thing not included is the azimuth post, but you can take that from your tripod.

Dave

#5 Orion58

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Posted 04 March 2012 - 08:17 AM

Thanks Dave :grin:

#6 starbob1

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Posted 04 March 2012 - 08:21 AM

I also just got this adapter for my observatory.Very high quality and buildt.The center bolt does come with it but you need a large allen hex wrench to use it.I somehow had one in my dads old toolbox.They should include a handle or wrench for this for the price they charge.But a great plate adapter.Bob

#7 Orion58

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Posted 04 March 2012 - 11:04 AM

I also just got this adapter for my observatory.Very high quality and buildt.The center bolt does come with it but you need a large allen hex wrench to use it.I somehow had one in my dads old toolbox.They should include a handle or wrench for this for the price they charge.But a great plate adapter.Bob


I'm glad to hear you guys are satisfied with it's stability and quality. I already confirmed with Dean (Starizona) that this adapter works with a CGEM DX.

Thanks for the replies - it helps me out.

Clear skies

#8 EFT

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Posted 04 March 2012 - 12:35 PM

You might also want to look at Dan's Pier Plates. They are a little more adjustable but are considerably more expensive.

#9 Orion58

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Posted 04 March 2012 - 01:19 PM

Thanks Ed. I did look into Dan's adapter plates. No doubt they are very well made but you're right, they are more expensive.

#10 Magellan

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Posted 31 December 2012 - 09:36 AM

I know this is a bit old, but I like to search the forum for answers and I too am looking at getting a pier plate. I like Dan's but its way too expensive for me but his includes everything you need. With Starizona's your pier can be 7" shorter meaning more stable *IF* its strong enough.

I will be mounting what I had on my CGEM, about 55lbs (10 min unguided Max) using the tripod, will this hold up that much weight without the Starizona's posts collapsing?

I also will need a new Azimuth post as the one on the tripod is bent, not sure where I can get a new one, can just use a large bolt FWIW!

Guess I will need to find a 3/16th Hex wrench.

#11 Raginar

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Posted 31 December 2012 - 11:04 AM

Jeff,

I got my Dan's pier plate for a CGEM on AM for significantly less than a new one. I ended up buying Dan's posts and it worked out really well. I'm certain Starzona's rig is very similar so I imagine it'll hold up well.

As for a replacement post, take yours to Menards and just look for a replacement screw. It'll do the job just as well since you're just using the 'post' as a point to adjust it in azimuth. I saw someone who did this and just grinded down the sides to make a square.

Good luck!

#12 RTLR 12

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Posted 31 December 2012 - 11:09 AM

Is this the 'post' you need?

http://www.celestron...gnment-pin.html

Stan

#13 orlyandico

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Posted 31 December 2012 - 01:06 PM

that post is an M8 bolt. I just used one with the head cut off.

#14 Geo.

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Posted 31 December 2012 - 05:21 PM

Is this the 'post' you need?

http://www.celestron...gnment-pin.html

Stan


Got'ta figure a lot of these go missing! But $15 plus S&H is a lot for a bit half inch key stock with machined thread.

This said by a guy who was GLAD to pay $50 for 6" of hydralic hose to get the tractor going again. Pretty cheap when you consider all the $20 a gallon oil I was spraying around getting the snow cleared so I could get out and get the hose:tonofbricks:

#15 Orion58

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Posted 02 January 2013 - 04:52 PM

I will be mounting what I had on my CGEM, about 55lbs (10 min unguided Max) using the tripod, will this hold up that much weight without the Starizona's posts collapsing?


I think the Starizona adapter would hold that and quite a bit more. It is a solid unit.

#16 Orion58

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Posted 02 January 2013 - 05:04 PM

Jeff

As a follow up, here are some installation photos. This one is the Starizona adapter after I set it on the anchor bolts.

You'll notice a thin piece of plastic-like material on top of the adapter. This does NOT come with the adapter plate. I'm trying to remember where I got it, but it is a super slick material that allows you to move the mount in azimuth with great precision. If you've ever adjusted your CGEM in azimuth you know that the metal on metal causes it to lurch. This material is amazing. I have a chunk left that would be plenty for your installation. If you're interested, send me a PM and I can mail it up to you.

Attached Files



#17 Orion58

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Posted 02 January 2013 - 05:06 PM

My CGEM DX after setting it on the adapter plate.

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#18 Orion58

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Posted 02 January 2013 - 05:08 PM

And the plate fully loaded. There is absolutely zero movement in the adapter plate - solid as a rock.

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#19 Magellan

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Posted 25 January 2013 - 07:45 AM

wow, thanks for the replies and pictures. It helps. I am going to home Depot to get a few things, what size J bolts do I need?

I figured out how to make this a favorite, hopefully it will tell me if someone posts to this thread.

#20 Orion58

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Posted 25 January 2013 - 08:35 AM

I'll send you a PM Jeff.

#21 Geo.

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Posted 25 January 2013 - 02:00 PM

I think the Js only come in 1/2" for contruction. Guess if a few will hold a house down they'll do.

#22 mclewis1

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Posted 25 January 2013 - 09:28 PM

J bolts come in a whole variety of lengths and diameters, the 1/2" ones are just the most popular ones generally available.






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