Mounting Telrad to my Z12
Posted 29 January 2013 - 02:12 PM
Lastly, I was thinking about mounting it between the focuser and where the old finder scope is, I don't know if that will throw the balance off or not, or if I even have to worry about balance or not.
I know I got lots of questions but this is my first Dob so I am new to this whole set up and just want to make sure I do it right.
Posted 29 January 2013 - 02:16 PM
Posted 29 January 2013 - 02:59 PM
Moved my telrads to use the scopestuff telrad rail with finder shoe and just put secondary shoes on my scopes. A plus is that it raises it somewhat, negating the need for the telrad riser I used before. And I can swap out various optical finder, RDF, telrads as I see fit.
Posted 29 January 2013 - 03:00 PM
Posted 29 January 2013 - 04:23 PM
Posted 29 January 2013 - 04:37 PM
As to placement, I have a Z10 and placed my Telrad as close to the focuser as possible - in between the focuser and where the original finder was (I sold the original finder). I also use a 2" Telrad riser for comfort - though with the Z12 you may not need/want a riser.
Posted 29 January 2013 - 04:52 PM
As mentioned above its good to place the telrad as close to the eyepiece as practical. You don't want to be moving your head a long way to use it--very tiresome.
Posted 29 January 2013 - 05:07 PM
Posted 29 January 2013 - 06:20 PM
I recently did what edwinh did and removed the base replacing it with the dovetail base that scopestuff sells,but that is just a personal preference as I can now move my telrad from scope to scope without needing extra base units.
As far as placement is concerned I would advise you to place it to the right of the old finder location. If you ever decide to get a telrad riser it will not interfere with any optical finder that you may use.
Posted 29 January 2013 - 06:23 PM
Posted 29 January 2013 - 06:43 PM
I believe that you can adjust the balance point on a Zhumell scope.
I don't know if that will throw the balance off or not, or if I even have to worry about balance or not.
Posted 29 January 2013 - 08:06 PM
With regards to using large zip ties, how would you tighten the zip tie so it's snug?
I used 36 inch zip ties about 1/2 " wide then used Pliers to pull the ties tight. I have had my Telrad on for over a year and its never moved. Two seemed to do the trick.
Posted 29 January 2013 - 08:54 PM
Posted 29 January 2013 - 08:58 PM
Posted 29 January 2013 - 09:56 PM
Drilling holes is no big deal. Just use a good magnet in a sandwich bag to catch filings and drill while the tube is horizontal. A wood block inside the tube helps you push while drilling. Put some masking tape on the tube and mark your spots. The holes are easier to drill if you dent the two spots with a sharp nail.
The Z12's balance point is easily shifted with a hex key loosening the pairs of bolts in the altitude bearings. Be careful to get both sides moved to the same reference marks.
Posted 29 January 2013 - 11:25 PM
Posted 30 January 2013 - 07:01 AM
I have to say my Telrad is my favorite accessory.
Posted 30 January 2013 - 12:09 PM
came with double sided tape to use for mounting and I am a concerned how durable this will be.
I live in Montana, and my scope sits in my observatory year around, reaching way below zero temps; and the Telrad tape has held perfectly! This is a commercial heavy duty tape, not the tape bought in many of the local stores; that may not hold securely in fluctuating temps.
You also may be able to get the necessary accessory from ScopeStuff to use the telrad in the base for your original finder.
Posted 30 January 2013 - 12:34 PM
The standard factory included finder on MY Z12 isn't poor quality.It is as good as the rest of the scope.
No disputing a Telrad or similar is a big help getting to the correct stellar neighborhood quickly.
Then the 8x50 is good for finding the exact "address".
Posted 30 January 2013 - 04:49 PM