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Luigi
Postmaster


Reged: 07/03/07
Posts: 5317
Loc: MA
Re: Sphinx vs. CGEM vs. GM-8 vs. ??? for TV-85 AP new [Re: Eric Gage]
      #3224754 - 07/18/09 08:10 AM

Not only is the Sphinx much lighter than the CGEM, it also considerably lightens your wallet compared to by buying a CG5ASGT, which is arguably at least as capable but lacking in cachet, IMO.

--------------------
17.5" f/5 Dob. IM-715 MCT. 120ED. Lunt 60mm Ha.
Zeiss, Leica, Fujinon, Nikon, Pentax, Bushnell bins


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Eric Gage
scholastic sledgehammer


Reged: 12/13/05
Posts: 993
Re: Sphinx vs. CGEM vs. GM-8 vs. ??? for TV-85 AP new [Re: Luigi]
      #3225023 - 07/18/09 11:50 AM

I have found that the most expensive equipment in the long run is the stuff that disappoints me. Those items that are a joy to use are generally worth every penny. I am hoping the Sphinx will be one such product for me.

--------------------
Eric
---------------------
WO 80mm 10th Anniversary
TSA120
PST
EM-200 T2
Canon 500D, full spectrum mod (thanks, Gary Honis)
15" Obsession with ServoCat



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Luigi
Postmaster


Reged: 07/03/07
Posts: 5317
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Re: Sphinx vs. CGEM vs. GM-8 vs. ??? for TV-85 AP new [Re: Eric Gage]
      #3225168 - 07/18/09 01:19 PM

Yeah, I know what you mean...I think. Did you get it with the hal-130 tripod? Let us know how that works.

--------------------
17.5" f/5 Dob. IM-715 MCT. 120ED. Lunt 60mm Ha.
Zeiss, Leica, Fujinon, Nikon, Pentax, Bushnell bins


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Eric Gage
scholastic sledgehammer


Reged: 12/13/05
Posts: 993
Re: Sphinx vs. CGEM vs. GM-8 vs. ??? for TV-85 AP new [Re: Luigi]
      #3225533 - 07/18/09 05:36 PM

Yes, the 130 without the half-pillar for the time being.

--------------------
Eric
---------------------
WO 80mm 10th Anniversary
TSA120
PST
EM-200 T2
Canon 500D, full spectrum mod (thanks, Gary Honis)
15" Obsession with ServoCat



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Taylor
scholastic sledgehammer


Reged: 07/10/05
Posts: 765
Loc: Owasso, OK
Re: Sphinx vs. CGEM vs. GM-8 vs. ??? for TV-85 AP new [Re: Eric Gage]
      #3225589 - 07/18/09 06:32 PM

I recommend the pillar once the sticker shock of the initial mount wears off.
It gives some nice clearance for any cables like dew heater lines and imager control cables when the mount is swinging around.
Also, I love having the storage in the little cubby inside it, very handy.


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Eric Gage
scholastic sledgehammer


Reged: 12/13/05
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Re: Sphinx vs. CGEM vs. GM-8 vs. ??? for TV-85 AP new [Re: Taylor]
      #3226124 - 07/19/09 02:23 AM

Do you have the 110 or the 130 tripod?

--------------------
Eric
---------------------
WO 80mm 10th Anniversary
TSA120
PST
EM-200 T2
Canon 500D, full spectrum mod (thanks, Gary Honis)
15" Obsession with ServoCat



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adamsp123
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Reged: 11/20/08
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Loc: welshpool mid wales UK
Re: Sphinx vs. CGEM vs. GM-8 vs. ??? for TV-85 AP new [Re: Eric Gage]
      #3226230 - 07/19/09 05:44 AM

My photo above shows the half pillar on the HAL 130 Tripod, you can also spot the cut out on the left hand side.

--------------------
SkyWatcher 120ED PRO plus dedicated Flattener, SW 190MN , WO 72ED & 66ED
Vixen Sphinx with starbook, Atlux with Nexatlux
QHY5 finder guider, Modded Canon 1000D, Atik 383L+ Mono and filters

Don't you wish there were a knob on the TV to turn up the intelligence? There's one marked 'Brightness,' but it doesn't work."

TV is called a "medium" because it is neither rare nor well done.


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Luigi
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Re: Sphinx vs. CGEM vs. GM-8 vs. ??? for TV-85 AP new [Re: adamsp123]
      #3226287 - 07/19/09 07:21 AM

I've found the tripod is often a weak link in terms of stability in these smaller mounts. One reason I went for the CG5 over a Vixen or GM-8 when downsizing from my G11 was its stout tripod. I imagine the Vixen pillar would help by allowing the legs to be kept short.

--------------------
17.5" f/5 Dob. IM-715 MCT. 120ED. Lunt 60mm Ha.
Zeiss, Leica, Fujinon, Nikon, Pentax, Bushnell bins


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Taylor
scholastic sledgehammer


Reged: 07/10/05
Posts: 765
Loc: Owasso, OK
Re: Sphinx vs. CGEM vs. GM-8 vs. ??? for TV-85 AP new [Re: Luigi]
      #3226527 - 07/19/09 11:01 AM

You would be surprised how stable the HAL tripods are.
They may look like the flimsy aluminum models from GP clones of a few years ago, but it is much more sold and stable than those. There is a member doing 2 min subs unguided with an 8" SC on his stock tripod, so they're more stable than you think.
Dampening time is <1s when focusing with both of my scopes.


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jrcrillyAdministrator
Refractor wienie no more


Reged: 04/30/03
Posts: 30716
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Re: Sphinx vs. CGEM vs. GM-8 vs. ??? for TV-85 AP new [Re: Taylor]
      #3226622 - 07/19/09 12:07 PM

Quote:

You would be surprised how stable the HAL tripods are.




Yes, I know that folks have been surprised at the stability of the HAL tripods I've owned. As you say, the lightweight Chinese tripods provided with so many mounts over the years have given aluminum tripods an undeservedly bad reputation.

--------------------
John C

Battle Cry of Reno
http://www.wadsworthobservatory.com
My Cloudy Nights gallery

AT12RC
AT65EDQ
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Roper Scientific Quantix 6303E "project" camera
mystery EQ mount on the way


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Eric Gage
scholastic sledgehammer


Reged: 12/13/05
Posts: 993
Re: Sphinx vs. CGEM vs. GM-8 vs. ??? for TV-85 AP new [Re: jrcrilly]
      #3226811 - 07/19/09 02:16 PM

Yes, we all know how flimsy aluminum framed automobiles are...



--------------------
Eric
---------------------
WO 80mm 10th Anniversary
TSA120
PST
EM-200 T2
Canon 500D, full spectrum mod (thanks, Gary Honis)
15" Obsession with ServoCat



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Luigi
Postmaster


Reged: 07/03/07
Posts: 5317
Loc: MA
Re: Sphinx vs. CGEM vs. GM-8 vs. ??? for TV-85 AP new [Re: Eric Gage]
      #3226915 - 07/19/09 03:19 PM

>>>Yes, we all know how flimsy aluminum framed automobiles are<<<

The G11 tripod is aluminum and incredibly stout (and perhaps a bit more relevant?). Size for size, steel is 3x stiffer, but weight for weight they're about even. But that's really only part of the story.

For tripods, the choice of material doesn't much matter as long as the design is sound and appropriate for load.


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Taylor
scholastic sledgehammer


Reged: 07/10/05
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Re: Sphinx vs. CGEM vs. GM-8 vs. ??? for TV-85 AP new [Re: Eric Gage]
      #3230800 - 07/21/09 04:50 PM Attachment (51 downloads)

Once you get it in, unless you only plan on backyard observing, I recommend a Pelican 1600 case. I can easily fit everything I need into my Pelican and it keeps it all in one spot, and safe, when transporting from the garage to a dark site.
Also gives you the legendary protection of a Pelican.

Attachment


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donsinger1
sage


Reged: 10/28/07
Posts: 307
Re: Sphinx vs. CGEM vs. GM-8 vs. ??? for TV-85 AP new [Re: Luigi]
      #3231158 - 07/21/09 07:50 PM

Quote:

Not only is the Sphinx much lighter than the CGEM, it also considerably lightens your wallet compared to by buying a CG5ASGT, which is arguably at least as capable but lacking in cachet, IMO.




Lightness is a virtue, for the most part, but also can be a negative when imaging. I had lighter mounts in the past such as a GM8, but moved up to the CGEM for how stout and capable it appeared and it has not disappointed. It is not overbearing in terms of weight when you break it down into several pieces, which most people do. I use very light (carbon) refractors

When the stoutness and heft the mount excels over a lighter mount when imaging is when a breeze kicks up. Last night a moderate breeze came up while I was imaing The Veil Nebula, using 5 minute guided exposures. Over 3 hours, I only lost 5 images for a yield of 90%...if that had been my GM8, my yield at best would have been about 30%...big difference.

Don

--------------------
Fun Stuff:)
Portland, OR


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