Need Help Celestron C6-SGT Add Guide Scope
Posted 12 February 2011 - 12:26 AM
Posted 12 February 2011 - 12:59 AM
Have you considered a KWIQ Guider package or a home-made 50mm finderscope guidescope? I use a 50mm finder-guider myself and find it works very well. It also has the advantage of not adding much weight (an important thing when using the CG-5 mount).
Posted 12 February 2011 - 01:11 AM
Posted 12 February 2011 - 01:52 AM
The ideal way to use a finder-guider is to simply swap back and forth between the normal finder scope and the finder-guider as needed using the same mount point on the telescope. This requires using a "quick release bracket" for the finderscope's base. From looking at Celestron's website for the C6-SGT package it *looks* like their included finder does not use a quick release bracket.... annoying.
If you look at the KWIQ guider package you will see they have three options for the mount rings, two of those are what I am talking about. One is the Vixen type finderscope bracket and the other is the Anatares DTB50 type finderscope bracket. If you look at the pictures you will see there is a base that screws on to the mount, and a "foot" that slides into the base (this is particularly obvious with the Vixen type).
What I would do is retire the 30mm finder that came with the scope, get a KWIQ-Guider with either the Vixen or Anatares DTB50 type brackets, and then also purchase a regular 50mm finder scope at the same time that uses the same base. That way you will be able to do that easy swap back and forth between just a visual finder and a finder guider.
Posted 12 February 2011 - 02:05 AM
For my own scope I purchased a used 50mm finderscope from the classifieds section here on cloudy nights, purchased a used Orion Starshoot Autoguider from Astromart (the Starshoot Autoguider is the same as the QHY5 that comes with the KWIQ guider), then used some standard plumbing bits and a few bolts to convert the 50mm finder into a guide scope. My original finder was a 50mm finder so I re-used it's rings to mount my guide scope.
My setup is not as well made as the KWIQ-Guider, but it does the same job and has worked very well for me, if you like DIY projects the home-made finder guider saves you a *little* bit of money, but buying the professionally made KWIQ-Guider certainly will provide a clean, solid solution. The attached (rather poor quality) image shows my finder-guider mounted and ready to do it's job.
Posted 12 February 2011 - 08:47 AM
The benefits of this type of mounting are:
No need to keep aligning the finder scope
More robust mounting, less chance of it loosening during an imaging session
Much more control over fore and aft balance
Posted 12 February 2011 - 10:29 AM
Posted 12 February 2011 - 11:53 AM
Posted 12 February 2011 - 12:13 PM
The saddle is a V type from Losmandy, there are many examples of these. I think Losmandy and ADM have the best saddles but you can certainly save some money and use less expensive ones from folks like Scopestuff.
Very simple to do, I simply drilled and tapped for a couple of bolts ... but I also noticed that KW Telescope has the same setup already built up for the KWIQ ... for a good price.
Posted 12 February 2011 - 01:38 PM
Mark do you know what the parts names or numbers are you used to attach the 50mm to the bottom of your scope?
If you have enough room on your C6 to do what Mark did (and it is a good idea if you can for balance reasons) then the "ADM Rings" mount option for the KWIQ-Guider would do the same thing.
Or, if you want to do a DIY 50mm finder-guider then you can purchase those rings directly from ADM.
Posted 12 February 2011 - 07:32 PM
Posted 12 February 2011 - 09:08 PM
SbS is best suited for when you want the flexibility of being able to swap scopes at will.
Posted 12 February 2011 - 09:52 PM
Do you have any other telescopes then your C6 that you hope to also use for imaging or as a guide scope?
Posted 12 February 2011 - 10:20 PM
Posted 12 February 2011 - 11:01 PM
6" is not a lot of space. I think it can be managed with a 50mm finder-guider like the KWIQ guider though.
Posted 12 February 2011 - 11:02 PM
Posted 12 February 2011 - 11:04 PM