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Perhaps size matters
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Nov 20, 2016 13:11:47   #
nikonshooter Loc: Spartanburg, South Carolina
 
We have had some really super clear nights - unfortunately - I have been shooting football Fri and Sat and process those pics. But tonight - I will give this beast a go. I am still working on NGC 2403 and will add some photos from this 12 incher to see what happens.


We will see if size matters!

Before you point this out...I realize this guidescope will not do much good...I am working on how to mount the Starshoot 400 short tube guide scope.


(Download)

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Nov 20, 2016 15:29:42   #
CraigFair Loc: Santa Maria, CA.
 
nikonshooter wrote:
We have had some really super clear nights - unfortunately - I have been shooting football Fri and Sat and process those pics. But tonight - I will give this beast a go. I am still working on NGC 2403 and will add some photos from this 12 incher to see what happens.


We will see if size matters!

Before you point this out...I realize this guidescope will not do much good...I am working on how to mount the Starshoot 400 short tube guide scope.

Nice setup Ed nice and clean. Will the bracket mount to identical holes
as the finderscope on the other side of the main scope???
That will be a very cool shot Ed you also get a Nebula in the deal too.
Craig

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Nov 20, 2016 15:59:58   #
Europa Loc: West Hills, CA
 
Nice set up, this is the one your son gave you?

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Nov 20, 2016 16:03:42   #
nikonshooter Loc: Spartanburg, South Carolina
 
CraigFair wrote:
Nice setup Ed nice and clean. Will the bracket mount to identical holes
as the finderscope on the other side of the main scope???
That will be a very cool shot Ed you also get a Nebula in the deal too.
Craig


No....I will have to do a little engineering for the short tube. I will not have time today to fiddle with it so I will see what happens with the 162mm mounted now.

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Nov 20, 2016 23:39:00   #
SonnyE Loc: Communist California, USA
 
Nice light bucket Ed!
If all things are copacetic, it should give you a lot.

That guide scope looks to be one of Orion's 50mm with an Orion SSAG camera on it. Orion Magnificent Mini Deluxe AutoGuider Package
I wouldn't be to fast to discount what the little appearing guide scope can achieve. The same thing is in use by several professional observatories.
And on my set up, one of them is the most reliable and accurate device I have. Never a lick of trouble.
After all, a guide scope has one job. To catch a single star and stay locked onto it till the Sun comes up.
(Or in the case of last night here, a damned cloud cover blows in...)

But, of course, it is your toy to work with.

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Nov 22, 2016 07:09:46   #
Albuqshutterbug Loc: Albuquerque NM
 
That's one nice scope your son gave you. I don't know enough about that mount but the counter weights seem awfully close together.
My 11" SCT is a beast as well and the field of view is pretty tight but my optics are decent. I just don't use it very much.
I need to figure out guiding and I've been guilty of a bad case of lazy.
Look forward to seeing what it pulls.

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Nov 22, 2016 10:43:38   #
CraigFair Loc: Santa Maria, CA.
 
Albuqshutterbug wrote:
That's one nice scope your son gave you. I don't know enough about that mount but the counter weights seem awfully close together.
My 11" SCT is a beast as well and the field of view is pretty tight but my optics are decent. I just don't use it very much.
I need to figure out guiding and I've been guilty of a bad case of lazy.
Look forward to seeing what it pulls.

Hi Jim just wondering what you meant by the counter weights being too close together or to close to the scope???
Craig

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Nov 22, 2016 11:33:48   #
nikonshooter Loc: Spartanburg, South Carolina
 
CraigFair wrote:
Hi Jim just wondering what you meant by the counter weights being too close together or to close to the scope???
Craig


The mount was balanced - the weights are fine...guiding was above average considering I was using a 166 mm guide scope on a 3000mm OTA.

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Nov 22, 2016 11:53:45   #
SonnyE Loc: Communist California, USA
 
nikonshooter wrote:
The mount was balanced - the weights are fine...guiding was above average considering I was using a 166 mm guide scope on a 3000mm OTA.


I'm wondering, Ed. What is Hoyle on the Big Bertha scopes like that for guiding?
Is there some rule of thumb? (Not like I will ever be in those shoes, just one-der-ring.)

(For example, my 55 mm guide scope is good up to 1500 mm optics. But what does one do for double that?)

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Nov 22, 2016 12:06:12   #
skylane5sp Loc: Puyallup, WA
 
110 silly...

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Nov 22, 2016 12:07:42   #
SonnyE Loc: Communist California, USA
 
skylane5sp wrote:
110 silly...


How about two 55's, side by side?

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Nov 22, 2016 12:32:28   #
CraigFair Loc: Santa Maria, CA.
 
SonnyE wrote:
How about two 55's, side by side?

Actually I think for the 11" scope my Orion 70mm guidescope and the Orion StarShoot Autoguider Camera would be a good pick.
Craig

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Nov 22, 2016 16:23:41   #
nikonshooter Loc: Spartanburg, South Carolina
 
Here is a good article on the subject of "which guide scope"

http://www.wilmslowastro.com/tips/autoguiding.htm

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Nov 22, 2016 16:47:56   #
CraigFair Loc: Santa Maria, CA.
 
nikonshooter wrote:
Here is a good article on the subject of "which guide scope"

http://www.wilmslowastro.com/tips/autoguiding.htm

Important note from the article:
"Use a guide scope at least 1/3 the focal length of the imaging scope, or longer".
My 9.25" 2350mm fl = 783mm fl and I use a 279mm fl guidescope.
It can guide it pretty well for what I can afford and the weight issue of a 90mm plus dovetail bar.
Craig

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Nov 22, 2016 19:16:51   #
nikonshooter Loc: Spartanburg, South Carolina
 
CraigFair wrote:
Important note from the article:
"Use a guide scope at least 1/3 the focal length of the imaging scope, or longer".
My 9.25" 2350mm fl = 783mm fl and I use a 279mm fl guidescope.
It can guide it pretty well for what I can afford and the weight issue of a 90mm plus dovetail bar.
Craig


That was my concern when I initially kickstarted the 12 inch 3000 plus vixen. The guide scope I am using is 166mm. I have a 400mm short tube but I need to rig it to work....I will come to grips with that later. I am so "not impressed" with the vixen and doubt I will spend to much time dick'n around with it. I add another 90 shots to the 82 I kept from the night before. I haven't worked on the image yet but the subs just see lacking to me. My son (fool and money soon part) paid close to 4,000 american for it...said it was on sale because they were dis-continuing it...that it originally sold for over 5,000.

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