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Emanuele
Lord of the Ring


Reged: 11/19/03
Posts: 5652
Loc: Brescia-Italy, and Iowa-US
GPD2 and GPDX?
      #3177447 - 06/23/09 12:00 AM

Hello all,

quick question : what is the difference between the GPD2 and GPDX?
Also, which one would you choose? GPD2 with Starbook or GPDX with SkySensor 2000?

Thanks!
Emanuele

--------------------
Backyard Skies

Astro-Physics 130EDF Gran Turismo
TEC MC200 F15.5
Astro-Physics Mach1GTO on Rob Miller TRI36L
Super Half Hitch on AP Wood Tripod
Baader/Zeiss Mark V
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karlpenney
super member


Reged: 01/04/07
Posts: 187
Loc: Halifax, NS
Re: GPD2 and GPDX? new [Re: Emanuele]
      #3177489 - 06/23/09 12:38 AM

As far as I know, the GPD2 is the same as the GPDX except for the color. I'm not sure if the Starbook has this feature, but for visual use with the SS2K, you can just plunk it down and do a 3-star alignment without polar aligning. In unaligned mode it can track in RA and DEC. Kind of handy for grab and go sessions.

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Karl

Antares 8" DOB, SV80ED, C8 XLT, LS60THa
Vixen GPDX, iOptron MiniTower, SV M1
QHY8, QHY5, MX7-C

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comets4tom
professor emeritus


Reged: 02/08/05
Posts: 638
Loc: Texas
Re: GPD2 and GPDX? new [Re: karlpenney]
      #3177497 - 06/23/09 12:48 AM

Actually, you can just do a two star alignment. The three star alignment increases the finding accuracy. With the Sky Sensor you can enter information for finding comets and satellites. I'm not sure if you can do that with the Starbook.

Tom H.

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Vixen R200SS,Meade 2045D, Orion Explorer 90mm, Orion Starblast Imaging Reflector, Vixen Great Polaris DX with iOptron Goto Nova, Meade LX200GPS 8 Inch, AT72ED
Canon 1000D,Orion Starshoot II Monochrome, Atik 16IC


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Anand Rajiva
Member


Reged: 05/11/04
Posts: 80
Loc: Bavaria, Germany
Re: GPD2 and GPDX? new [Re: karlpenney]
      #3177633 - 06/23/09 03:40 AM

Quote:

As far as I know, the GPD2 is the same as the GPDX except for the color.




yes, the mechanical data is the same, just the color changed.

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Anand Rajiva

Tal-200K, Orion ED-100
Losmandy G11 with LFE Photo Controller
Mod. Canon 300D


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jrcrillyAdministrator
Refractor wienie no more


Reged: 04/30/03
Posts: 30716
Loc: NE Ohio
Re: GPD2 and GPDX? new [Re: Emanuele]
      #3177795 - 06/23/09 08:18 AM

Quote:

Also, which one would you choose? GPD2 with Starbook or GPDX with SkySensor 2000?

Thanks!
Emanuele




GPDX/SS2K for me. I've owned several of both and although I like the feature set of the StarBook I just never learned to love the GUI.

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

Battle Cry of Reno
http://www.wadsworthobservatory.com
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Emanuele
Lord of the Ring


Reged: 11/19/03
Posts: 5652
Loc: Brescia-Italy, and Iowa-US
Re: GPD2 and GPDX? new [Re: jrcrilly]
      #3177997 - 06/23/09 10:38 AM

Thank you guys,
I should have probably mentioned that I will be using this 90% for Astrophotography, as my portable mount!
I'm interested in a very low PE mount that is very portable and can be autoguided. I was looking at the Kenko SkyMemo but for a couple of hundreds dollar more I can pick up the GPD2 or GPDX and have a higher payload for beefier lenses/scopes.

As far as the precision of the gears, are they the same in both mounts?

E.

--------------------
Backyard Skies

Astro-Physics 130EDF Gran Turismo
TEC MC200 F15.5
Astro-Physics Mach1GTO on Rob Miller TRI36L
Super Half Hitch on AP Wood Tripod
Baader/Zeiss Mark V
FLI ML8300 & CFW2-7 with Baader Filters



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karlpenney
super member


Reged: 01/04/07
Posts: 187
Loc: Halifax, NS
Re: GPD2 and GPDX? new [Re: Emanuele]
      #3178136 - 06/23/09 12:41 PM

The internals of both mounts are the same. I have not been into imaging that long, and up to this point have been using my GPDX for 2-3 minute unguided exposures. I have a KWIQ guider setup now, but have not had a chance to do any PE measurement yet.

--------------------
Karl

Antares 8" DOB, SV80ED, C8 XLT, LS60THa
Vixen GPDX, iOptron MiniTower, SV M1
QHY8, QHY5, MX7-C

Photo Gallery



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GShaffer
Carpal Tunnel


Reged: 02/28/09
Posts: 1560
Loc: Bogart, Ga USA
Re: GPD2 and GPDX? new [Re: karlpenney]
      #3178226 - 06/23/09 01:25 PM

Highly suggest the SS2K over the starbook......Starbook does not save its alignment setup between powerups.....SS2K does.

Note: Even Vixen puts the SS2k on their observatory only class mount still. Definately wouldnt go over well to use a goto system that doesnt save its alignment settings between sessions lol

As far as the mechanicals the only difference is the color.

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20" MidnighTelescope f/5
8" f/15 Achro(project),AR6, C11, Parallax PI-250
ED102SS, FL102S,NA140SS,R200SS, 80mm NighthawkII w/TMB Fluorite Optics, SV70ED, AT66ED
LXD75, Mini-tower, GPDX, ASGT, LXD650, GM-8, GM-100,GM-150EX, G11, GM-200, Gemini G40
4" portable AP convertable 44" or 70" pier
MidnighTelescope 12.5" F/5 Dob

Bogart GA


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Emanuele
Lord of the Ring


Reged: 11/19/03
Posts: 5652
Loc: Brescia-Italy, and Iowa-US
Re: GPD2 and GPDX? new [Re: GShaffer]
      #3179957 - 06/24/09 11:31 AM

Thank you so much to all of you !

--------------------
Backyard Skies

Astro-Physics 130EDF Gran Turismo
TEC MC200 F15.5
Astro-Physics Mach1GTO on Rob Miller TRI36L
Super Half Hitch on AP Wood Tripod
Baader/Zeiss Mark V
FLI ML8300 & CFW2-7 with Baader Filters



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