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Equipment Discussions >> Refractors

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timmbottoni
Carpal Tunnel


Reged: 08/25/05

Loc: W Chicago suburbs, IL USA
Re: William Optics GTF 102 - first light barely new [Re: Scott in NC]
      #5709684 - 03/02/13 10:35 PM

Quote:

Nice report, Timm! Glad to hear that your new scope is working out so well for you.




Thanks - the optics are amazing. Now I just need a good mount. I'm pretty sure its going to be the new the iEQ45.


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Erskin71
professor emeritus


Reged: 12/13/10

Re: William Optics GTF 102 - first light barely new [Re: timmbottoni]
      #5709736 - 03/02/13 11:21 PM

Nice. I am getting ready to post my 1st light report in a few. I feel bad I wimped out after a little over an hour in the low 40's.

I agree the optics do look amazing.


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nirvanix
Carpal Tunnel


Reged: 06/07/07

Loc: Saskatoon, SK
Re: William Optics GTF 102 - first light barely new [Re: Erskin71]
      #5709916 - 03/03/13 04:02 AM

Timm I hope you do a thorough review of this scope and submit it to CN.

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timmbottoni
Carpal Tunnel


Reged: 08/25/05

Loc: W Chicago suburbs, IL USA
Re: William Optics GTF 102 - first light barely new [Re: nirvanix]
      #5710422 - 03/03/13 11:13 AM

Quote:

Timm I hope you do a thorough review of this scope and submit it to CN.




I absolutely will - with pictures, and maybe a youtube video!

Timm


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Erskin71
professor emeritus


Reged: 12/13/10

Re: William Optics GTF 102 - first light barely new [Re: timmbottoni]
      #5710477 - 03/03/13 11:40 AM

Oh ya have to have a youtube video these days

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Jim7728
Postmaster
*****

Reged: 04/10/05

Loc: Stoop Landing Observatory, NYC
Re: William Optics GTF 102 - first light barely new [Re: timmbottoni]
      #5710554 - 03/03/13 12:28 PM

Congrats on the GTF, fellas. I almost bought one, but blew my play money on my other hobby.

Questions:

Does the GTF-102 have enough back-focus for all your eyepieces and are there no signs of field curvature with your low power, wide field eyepieces?

Thanks!


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timmbottoni
Carpal Tunnel


Reged: 08/25/05

Loc: W Chicago suburbs, IL USA
Re: William Optics GTF 102 - first light barely new [Re: Jim7728]
      #5710805 - 03/03/13 02:56 PM

Quote:

Congrats on the GTF, fellas. I almost bought one, but blew my play money on my other hobby.

Questions:

Does the GTF-102 have enough back-focus for all your eyepieces and are there no signs of field curvature with your low power, wide field eyepieces?

Thanks!




I posted above about my eyepieces that I tried and which ones required a 1.25" diagonal, and others that worked with a 2" diagonal.

I spent some time looking at the Pleiades cluster (M45) which fills the view of my WO SWAN 33mm, and is too big but amazing in my WO UWAN 16mm. Both eyepieces showed significant curvature in my WO 80FD, and significant edge deterioration in with my C8. In the GTF 102 they are sharp and in focus to the edge with some edge false color showing. The lateral chromatic abberations are common in eyepieces, but honestly because the stars near the edge have never been in focus along with the stars in the middle, I never really paid much attention to it. I might try to take a 1 second shot tonight, as I don't have a tracking mount at the moment. It might be enough to demonstrate the flattness of the field at least.

Timm


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Jim7728
Postmaster
*****

Reged: 04/10/05

Loc: Stoop Landing Observatory, NYC
Re: William Optics GTF 102 - first light barely new [Re: timmbottoni]
      #5711479 - 03/03/13 09:03 PM

Thanks! Sounds like a nice performer.

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timmbottoni
Carpal Tunnel


Reged: 08/25/05

Loc: W Chicago suburbs, IL USA
Re: William Optics GTF 102 - first light barely new [Re: Jim7728]
      #5713468 - 03/04/13 10:04 PM

Thanks - I'm convince of the new scope curse. Third major snow tomorrow since I got the new scope.

Timm


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Gasmansteve
newbie


Reged: 08/29/12

Loc: North Yorkshire UK
Re: William Optics GTF 102 - first light barely new [Re: timmbottoni]
      #5819714 - 04/24/13 12:42 PM

Hi Guys
New to the forum and Hi to all from the UK !.
I found Timm`s thread last week and it got me interested in the GT102 only to find they were just available in the US but I`ve just found out today they will be available to European dealers ;-)) so I`m more than interested now and would be very keen to know how Timm is finding it so far in particular the weight the focuser can carry as I have an Atik 314 plus Atik usb filterwheel which is quite a chunk to hang off the focuser and my current C8 with Crayford just can`t cope with them. More info please Timm ;-)
Regards
Steve


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timmbottoni
Carpal Tunnel


Reged: 08/25/05

Loc: W Chicago suburbs, IL USA
Re: William Optics GTF 102 - first light barely new [Re: Gasmansteve]
      #5821056 - 04/24/13 11:17 PM

Hi Steve,

I did some testing on the focuser and it can handle weight much better than any of the other WO focusers that I have experience with. I devised a way to test it using weights and it has no problem lifting 5 lbs and 10 lbs, and when it gets to 15 lbs it does OK, but I had to tighten up the friction or it would unwind. 15 lbs is seriously a LOT of weight and I can't imagine having anything that heavy.

Do you know how heavy your camera and filter is?

Take care,

Timm


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Gasmansteve
newbie


Reged: 08/29/12

Loc: North Yorkshire UK
Re: William Optics GTF 102 - first light barely new [Re: timmbottoni]
      #5822856 - 04/25/13 07:17 PM

[quote
Do you know how heavy your camera and filter is?





Hi Timm
Haven`t weighed them but I`m pretty sure they are a lot less than 15lbs!. Getting very interested now as my dealer has offered to get a 102 in to bench test which I thought was an excellent thing to do. Must admit I always try things before buying them but not really possible with new scopes so the dealer going the extra mile is a pretty cool thing to do I think!. I`m looking at the WO ZS 71 to accompany it for guiding (same colour!).
Regards
Steve


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timmbottoni
Carpal Tunnel


Reged: 08/25/05

Loc: W Chicago suburbs, IL USA
Re: William Optics GTF 102 - first light barely new [Re: Gasmansteve]
      #5823765 - 04/26/13 08:21 AM

Sounds great

There have been good reports on the 71 also.

I got my iOptron iEQ45 yesterday and it's a great match for this scope

Timm


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Costa
newbie


Reged: 06/02/13

Re: William Optics GTF 102 - first light barely new [Re: timmbottoni]
      #5933641 - 06/21/13 08:30 PM

Has anyone taken any kind of photo through the GTF 102 yet ? Astrobin and Flickr are coming up short.

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timmbottoni
Carpal Tunnel


Reged: 08/25/05

Loc: W Chicago suburbs, IL USA
Re: William Optics GTF 102 - first light barely new [Re: Costa]
      #5933760 - 06/21/13 09:47 PM Attachment (52 downloads)

Yes - nothing great though

Edited by timmbottoni (06/21/13 10:56 PM)


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timmbottoni
Carpal Tunnel


Reged: 08/25/05

Loc: W Chicago suburbs, IL USA
Re: William Optics GTF 102 - first light barely new [Re: timmbottoni]
      #5933876 - 06/21/13 10:57 PM Attachment (53 downloads)

30 sec shot - not great but I'm just learning

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Kendahl
member


Reged: 02/02/13

Re: William Optics GTF 102 - first light barely new [Re: timmbottoni]
      #5933935 - 06/21/13 11:46 PM

Timm:

I'm about to order a GTF102 and an iEQ45 mount. iOptron sells the two of them as a package for a bit less than they would cost separately. One thing they don't indicate (their tech support is supposed to tell me) is whether the model in the package has the DDG focuser.

I noticed in the photos that your scope does have the DDG focuser. How useful have you found it to be? If it's worth having, I will make sure to get it even if I have to pay more by ordering it from another vendor. If not, I will just take whatever iOptron provides.


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timmbottoni
Carpal Tunnel


Reged: 08/25/05

Loc: W Chicago suburbs, IL USA
Re: William Optics GTF 102 - first light barely new [Re: Kendahl]
      #5934281 - 06/22/13 09:34 AM

Quote:

Timm:

I'm about to order a GTF102 and an iEQ45 mount. iOptron sells the two of them as a package for a bit less than they would cost separately. One thing they don't indicate (their tech support is supposed to tell me) is whether the model in the package has the DDG focuser.

I noticed in the photos that your scope does have the DDG focuser. How useful have you found it to be? If it's worth having, I will make sure to get it even if I have to pay more by ordering it from another vendor. If not, I will just take whatever iOptron provides.




Hi

To be honest, while I think it's cool, I don't use the digital readout. I have a Canon 60D and I use live view with 10x zoom to focus.

If I had to use my older Canon 20D without live view I think I would rely on it a lot.

It works well as long as you remember to check the zero position and everything is precisely the same in your setup.

Hope that helps.

Timm


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pubquiz
scholastic sledgehammer


Reged: 10/07/04

Loc: Lancashire England
Re: William Optics GTF 102 - first light barely new [Re: timmbottoni]
      #5934567 - 06/22/13 12:45 PM

Beautiful scope Tim.

How does the flatness of field compare with scopes with a flattner as an add on?

Would imagine pretty good or better as it's matched exactly to the scope.

I have had a little Megrez72 for a few years and love it.....although it is a similar focuser to my others(just standard 2 speed crayford not R&P) it is so much better and smoother than my generic GSO/Smart Astronomy add on type focusers on other scopes, and it's even better to know now that WO are using R&P

The looks of of WO scopes with their red/blue/gold/ bits is absolutely stunning ...second only to the A&M scopes (At double the price) for sexyness in my opinion.If it's cloudy you could do worse than to just sit and stare at the scope

Tom


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timmbottoni
Carpal Tunnel


Reged: 08/25/05

Loc: W Chicago suburbs, IL USA
Re: William Optics GTF 102 - first light barely new [Re: pubquiz]
      #5935242 - 06/22/13 08:00 PM

Thanks Tom - I honestly don't have anything to compare to but I have looked at my images at 100% and even higher and with my Canon 60D APS size sensor the stars are round out to the edge so I guess that is as good as it can get, right?

The new R&P focuser is really nice too.

Timm


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