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Post by Deleted on Nov 17, 2013 11:45:52 GMT
Hi all, brain storming time! After reducing the size and weight of the CR6 Im ready for phase 2. I want to be able to slide the cam on and off the finder scope and looking ideas for attaching it. The diameter of the finder is 13mm. Ideas appreciated, Carl
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Post by johnno on Nov 18, 2013 22:25:47 GMT
I think you have to remove the eyepiece section of the finder so you can get focus, I know modern astronomy does the screw in adapter for them but not heard of a slide in one
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Post by Deleted on Nov 18, 2013 23:14:03 GMT
Cheers Johnno will have a look at those.
Carl
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Post by Deleted on Nov 20, 2013 23:43:22 GMT
A quick update on the camera to finder and as Johnno says you need to screw off the eye piece to get focus. The focus is very tight and I may have a way of doing it, work in progress and will post pics. From what I have found the focus point will give the same as looking through with the eye.
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Post by Dragon Man on Nov 23, 2013 15:42:55 GMT
I found the one John mentions. Wish they sold these in Australia! First one in the list of adaptors here: www.modernastronomy.com/accessories.html#accAdaptersFocussing isn't a problem with the Skywatcher/Orion etc Finderscopes because you focus them by turning the Primary lens up front. The Primary lens locks in place with a locking ring. Carl, if you get one and it works really well, please let us know. I might get one because I have been trying to mount my Sammy to my finderscope. Their pricing says: Price includes 'Free Worldwide Delivery'.
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Post by Deleted on Nov 23, 2013 17:09:09 GMT
Ken what I have found with the focus so far is that after screwing off the eyepiece you have to hold the finder body directly to the front of the cam with no space between and the focus lens screwed in as far as it can go in order to achieve focus. The internal threads on the finder body are quite deep so if about 5mm is removed from the length that would give good focus play. If that makes sense? They are quite expensive for a small threaded ring but as yet I cant find a suitable DIY solution I may invest Carl
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Post by davy on Nov 23, 2013 18:50:22 GMT
B&q central heating plastic pipe to a c/cs adapter ptfe tape..im shure you get It 13mm diameter....if you have metal c/cs adapter use as a thread tap Davy
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Post by Dragon Man on Nov 24, 2013 2:19:12 GMT
Yes, I agree Carl, it does seem expensive for a simple adaptor. But I'm getting fed up fiddling with all sorts of tubes and Duct tape Yeah Davy, I'll give the plastic tubes another go. I have some Super Glue
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Post by davy on Nov 24, 2013 9:51:07 GMT
Just to clarify. .your looking for a c to skywatcher finder scope barrel lens off..adaptation. ..ile see what I can come up with..davy
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Post by Deleted on Nov 24, 2013 10:14:20 GMT
Yes Davy and can't be any space between them
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Post by johnno on Nov 24, 2013 12:53:02 GMT
Carl I read somewhere that you can remove the locking ring to get to focus, unscrew the front lens off and remove the locking ring, refit the front lens minus the locking ring and you should achieve focus to infinity
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Post by Deleted on Nov 24, 2013 13:51:17 GMT
Cheers Johnno I was thinking that as well that would certainly help with camera and scope body spacing. It looks such an easy problem to solve. I may end up investing in the threaded ring in your link as I will be using it on a regular basis.
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Post by Deleted on Dec 3, 2013 17:51:05 GMT
Got a reply from Modern astronomy he only does the 9x50 finder adapters. It looks like B&Q needs a visit.
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Post by Deleted on Dec 16, 2013 11:56:45 GMT
I've converted my Meade 8x50 finder scope using a 2” to 1.25” adapter. It didn’t fit exactly…maybe 2mm difference. All I had to do was tape a piece of thin cardboard round the adapter to give it a little more thickness near the top then wedge in the adapter to the back of the finder. I added a little bit of tape round the edge to secure it but it didn’t really need it as its wedged in there pretty tightly So now my finder scope accepts 1.25” eyepieces. I then removed the crosshair eyepiece thing from the ring that threads into the finder and added a 1.25” barrel from an old eyepiece and screwed the crosshair thing into that. So it can be used as a manual finder or camera finder with ease Focusing seems a little problematic… I was able to achieve focus using a barlow and a camera on a street light about 30m away. Not tested it on the stars yet. The tube seems to be a little too long to give me enough focus play. If I could get the camera just a few mm closer to the lens it would be perfect. My plan is… to buy one of they wee bullet cameras that are 19-20mm (0.75”) diameter. Then I will make a small adapter out of a plastic 1.25” thing that slots into the barlow to cover it. That way I can move the camera that little bit closer to the lens if needed. I will add some pics when I home from work.
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Post by johnno on Dec 16, 2013 15:55:24 GMT
Chris did you remove the locking ring? that should bring the main lens closer to the camera
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Post by Deleted on Dec 16, 2013 16:30:05 GMT
Nah john i remembered hearing about the locking ring. However the lens only has like 5mm of thread before the lens. I did screw the ring as far back as possible then screwed the lens on and it wouldnt go as far as the ring. So i dont think it will allow more inward travel even without the locking ring. I will confirm tonight tho. Edit: Thats the ring screwed all the way down. The lens is on as far as it can go
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Post by Deleted on Dec 16, 2013 16:48:26 GMT
I havnt had sucess yet, looking for a 30mm pipe which may work if filed down correctly and the C/CS thread removed from the camera. Im using a 6 X 30mm smaller but will locate targets fine. As usual work in progress. The bullet is a good idea Chris any idea what diameter they are?
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Post by Deleted on Dec 16, 2013 18:02:01 GMT
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Post by Deleted on Dec 16, 2013 21:24:13 GMT
Heres a few pics. Full back section of finder unscrewed. 2" to 1.25" adapter securely wedged into the back of the finder. (Using some paper and black tape) Finder crosshair eyepiece unscrewed from ring and attached to a 1.25" barrel from an old eyepiece.
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Post by Deleted on Dec 16, 2013 21:25:44 GMT
Finder with manual crosshair eyepiece. Finder with camera. On the scope
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