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Posts Made By: Bernard Kean

June 21, 2008 06:55 PM Forum: Equipment Talk

Focusing Problem - Celestron SP C102

Posted By Bernard Kean
Hi Gary
I do not know this scope but you don't mention how much more "in" travel you need. But you can switch to a low profile 1.25"/2" adapter. You can try an 1.25" diagonal. This should shorten the lightpath a bit more than a 2" diagonal, and you can remove the diagonal altogather and try straight thru. There are several makers of focus adapters for binoviewers that screw into the scope end of the diagonal that extend the light path to accommodate the longer lightpath of the binoviewer.
Just a few thoughts
Buck

July 6, 2008 12:43 PM Forum: Eyepieces

26mm type V nagler - blackouts?

Posted By Bernard Kean
Hi Tim
I'm using the 26T5 in a NP127 and have used it in the TV101, NP101 and TV85 and 11" f/5.4 Starmaster dob and have never had any kidney beaning or blackout issues.
Buck

July 20, 2008 12:31 PM Forum: Equipment Talk

obscure part help needed

Posted By Bernard Kean
Try here: http://www.prolineracks.com/proline-roof-end-track-slats.html
They look to be plastic but not OEM and you might want to varify size.

Buck


October 24, 2008 02:38 PM Forum: Equipment Talk

Nagler 22 versus Nagler 20

Posted By Bernard Kean
I can't comment on the 22 but the 20T5 is one of my favorites
Buck

November 19, 2008 04:41 PM Forum: Equipment Talk

Recession Causing Lower Prices here?

Posted By Bernard Kean
Humm, not sure I would call it a fire sale, however it does seem that folks cannot sit on a scope and need to sell it quicker to pay for a new scope. As a result it does seem that those folks are willing to lower the price for a quicker sale. All my equipment is paid for so it cost me nothing to sit there, unless of course someone needs the money wrapped up in equipment to feed the kids or pay bills. I have seen some very nice equipment going for very attractive prices lately.
Buck

November 20, 2008 04:13 PM Forum: Equipment Talk

Help identify this mount. Vixen? Televue???

Posted By Bernard Kean
Michael

I'm not sure of the brand but it is not Televue.
Buck

November 24, 2008 10:40 PM Forum: TeleVue

Newest NP101 Image, NGC281 Tri-Color narrow Band

Posted By Bernard Kean
Looking good, Floyd.
Buck

December 1, 2008 05:58 PM Forum: Equipment Talk

To build a barlow?

Posted By Bernard Kean
You might try Precise Parts. He has made me a few small parts and the work was very good and very accurate.
Hope this helps
Buck

December 14, 2008 03:20 PM Forum: Reflectors

Can't focus with 2" focuser

Posted By Bernard Kean
Hello Bob
This sounds to me like the focuser height is the problem, OR it is possible that the 1.25"/2" adapter is a tall or high hat. If it is the adapter you can get a flat top type OR you may have to go to a low profile focuser. I am assuming here that there is not enough in-focus room.
How this helps
Buck

January 11, 2009 02:54 PM Forum: Telescope Making

Newtonian Question

Posted By Bernard Kean
Hi Brian

A couple things come to mind.

1. The 2" focuser should have the same height and travel as the 1.25".
2. Can the 2" fit where the 1.25" is now? The draw tube hole will most likely need to be enlarged and the mount screw holes may need relocating.
3. Balance, if the new 2" is much heavier then you may have to make balance adjustments.

Buck

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