RAKing
scholastic sledgehammer
Reged: 12/28/07
Posts: 822
Loc: Clouds-ville, Virginia
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Can someone measure their Sirius mount and give me the dimensions of the center mounting stud (diameter and length)? Also can you tell me the distance from the center of the mounting stud to the center of the azimuth pin? I prefer metric, but inches are fine.
Does the Sirius have a central "step" like the Atlas? If so, how deep and how wide?
Finally, does the Sirius use the same 12mm center bolt as the Atlas?
Thanks,
Ron
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Time spent looking at the stars is added to your life.
Orion XT10i / Moonlite CR2 -- The New "Time Machine"
"Hi Def" TV-102
C925-CF SCT
Ethos and Naglers
GM-8 GEM / A-P Portable Pier
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vinnie
Latinist
Reged: 01/05/08
Posts: 1446
Loc: Queensland, Australia
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Hey Ron, I've got to go to work in about 15 minutes. If you haven't got a reply by the time I get home, I'll measure mine for you, and take some photos.
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RAKing
scholastic sledgehammer
Reged: 12/28/07
Posts: 822
Loc: Clouds-ville, Virginia
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Vin,
Many thanks.
Ron
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Time spent looking at the stars is added to your life.
Orion XT10i / Moonlite CR2 -- The New "Time Machine"
"Hi Def" TV-102
C925-CF SCT
Ethos and Naglers
GM-8 GEM / A-P Portable Pier
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vinnie
Latinist
Reged: 01/05/08
Posts: 1446
Loc: Queensland, Australia
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The centre bolt is M10, [not the same as Atlas (M12)]
Outside dimension A in red is 60mm
Outside dimension X in green is 20mm
The height of the outer collar A is 16mm
The height of the inner boss X is 11.5mm
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vinnie
Latinist
Reged: 01/05/08
Posts: 1446
Loc: Queensland, Australia
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The Centre Dimension Z is 37mm
The depth of the receiver is 20mm
If anything is not clear, or you need more info, just ask.
Also, I only measured with a calliper and steel rule. If you need *accurate* dimensions, I'll get the micrometers out
Edited by vinnie (08/31/08 04:28 AM)
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RAKing
scholastic sledgehammer
Reged: 12/28/07
Posts: 822
Loc: Clouds-ville, Virginia
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Those are just fine.
Thanks for the great pictures and all your help. 
Ron
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Time spent looking at the stars is added to your life.
Orion XT10i / Moonlite CR2 -- The New "Time Machine"
"Hi Def" TV-102
C925-CF SCT
Ethos and Naglers
GM-8 GEM / A-P Portable Pier
|
vinnie
Latinist
Reged: 01/05/08
Posts: 1446
Loc: Queensland, Australia
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My pleasure
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NHRob
Carpal Tunnel
Reged: 08/27/04
Posts: 2559
Loc: New Hampshire
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Ron,
Are you thinking of downgrading from your Atlas to a Sirous?
I've had my eye on an Atlas for a 4-5" class refractor but a Sirius would be a much easier setup.
Rob
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Canon 12x36 IS binos
AP130EDT f/8 (for sale)
new 12.5" f/6 Royce conical mirror (for sale)
no free time ... lots of clouds !
" Life is what happens to you while you're busy making other plans" !!
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RAKing
scholastic sledgehammer
Reged: 12/28/07
Posts: 822
Loc: Clouds-ville, Virginia
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Quote:
Are you thinking of downgrading from your Atlas to a Sirous?
I've had my eye on an Atlas for a 4-5" class refractor but a Sirius would be a much easier setup.
The thought has crossed my mind - for exactly the same size scope. 
The Sirius weighs a lot less than the Atlas, has a reasonable capacity, uses the same motors and gears as the Atlas, plus I'm familiar and satisfied with the Synta hand paddle and operation. The weak point of the Sirius is the tripod and I would rather use my A-P Portable Pier. The hassle is getting an adapter made. Since ATS went out of business, I'm trying to find stock around here so I can make one myself.
Having said that, the Atlas is a superb choice for this size scope. It is quiet, smooth, and very accurate. The only downside is trying to lift a 36 pound mount onto a 42 inch refractor pier. My back has been complaining big time. 
However, I cut 2.5 inches off my pier yesterday and was able to handle the Atlas much better last night. It sounds strange, but it only took this amount to rectify the situation. If things continue to be this good, then my adapter idea might be OBE.
Take care,
Ron
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Time spent looking at the stars is added to your life.
Orion XT10i / Moonlite CR2 -- The New "Time Machine"
"Hi Def" TV-102
C925-CF SCT
Ethos and Naglers
GM-8 GEM / A-P Portable Pier
|
jonbosley
professor emeritus
Reged: 10/19/05
Posts: 540
Loc: Texas
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I just sold my Sirius after 3 years use and upgraded to the Atlas. Here is some points for you to consider.
Hands down the Sirius is much more mobile then the Atlas.
The Sirius has the same motors but smaller gears, hence it is rated at 30lbs not 40lbs.
The Sirius can lift over 30lbs for visual (I had 35lbs setup but I would not want to go over this).
So if you’re set up is over 35lbs then go for the Atlas. If you want mobility and are under 35lbs visual, under 30lbs astrophotography go with Sirius.
Jon
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C11 XLT Celestron
Atlas Goto Mount on Concrete Pier
WO 66 SD Doublet APO Refractor
Philips SNC900NC Webcam
Faymax FC-1000m Webcam with cooling fan
Orion Star Shoot Deep-Space CCD
POD Observatory
www.whitedwarfobservatory.com
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Zebra24601
Postmaster
Reged: 10/09/05
Posts: 7432
Loc: San Gabriel Valley, CA 91770
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I use my Sirius on a CG5 tripod with the 2" steel legs. The center screw worked fine. So, for what it's worth, if you build an adapter to CG5 specifications, it will also work for the Sirius.
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Zebra24601
Meade 8" SCT w/UHTC * Celestron 100ED * Celestron C11 * Barska 15x70 binoculars
Meade LXD55 mount * Orion Sirius goto mount * Bushnell Voyager 4.5" Compact Reflector
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Arbacia
sage
Reged: 04/18/07
Posts: 383
Loc: Madrid, Spain
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I am making an adapter for my HEQ5 (=Sirius) to be mounted on an EQ6 (=Atlas) 2" steel legs tripod. Basically is an alluminium washer(15-20mm high; 100-113mm external diammeter and 60mm of internal diammeter).
It needs a plug for the azimut screws and some drills to be fixed to the EQ6 tripod plate.
This EQ6 tripod is, by far, much more stronger than the original.
Patricio
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LightBridge 12"
Celestron C8 (orange tube) on HEQ5
Set of Hyperion EPs; DMK 31AF03.AS
CN image gallery
http://www.asociacionhubble.org
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