Bausch & Lomb 4000


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Subject: Re: vote by xxx.xxx.105.176
By: Anonymous (xxx.xxx.236.225)
Date: 03/17/2002 11:25:47 pm PDT
>I bought mine used with a cracked corrector plate (!!!) on EBay for $50. Fork mount and drive base work fine and are in pristine condition. I replaced the corrector plate (myself!!!) with a used Tokina 105mm multi-coated UV filter (!!!) as I was desperately trying to restore it to somewhat usable order. I figured that I would have nothing to lose if the "modification" did not work. The view turned out OK (!!!) when I pointed the scope at Mars last week - obvious undercorrection but nevertheless the Martian disk is bright and quite contrasty. After tweaking with the collimation I was able to use over 100X with acceptable results. A surprise considering the total cost ($65.00) I spent and the total lack of technical considerations that had gone into the "optical transplantation". As it turns out my little Criterion 4000 now performs pretty "healthy" in comparison to several other quality 80mm achromats my friend owns.

I also bought a used Criterion 4000, and like yours it also has
a broken corrector plate. (Being a novice, I asume the corrector plate is the glass holding the secondary mirror?)
Does this 'glass' have special coatings?? and is this why I can't seem to calibrate mine? It sounds like you may have already done what I've been trying to do...I sure could use
your advise...danielphi@msn.com
thanks....dan


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Subject: baush lomb 4000
By: Anonymous (xxx.xxx.58.250)
Date: 08/03/2004 05:58:42 pm PDT
where can I find the manual for this telescope?


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Subject: Re: vote by xxx.xxx.105.176
By: Anonymous (xxx.xxx.237.86)
In Reply to: Anonymous (xxx.xxx.236.225) (Original Message)
Date: 01/16/2005 01:39:48 pm PDT
I boiught a Criterion 4000 Bausch & Lomb telescope and would like to get a manual for it? I'm not sure where to get parts such as a camera adapter. Any help?
david jon krohn

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edit: email address removed by webmaster


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Subject: Re: vote by xxx.xxx.105.176
By: Anonymous (xxx.xxx.168.195)
In Reply to: Anonymous (xxx.xxx.237.86) (Original Message)
Date: 01/29/2005 05:45:14 pm PDT
>I bought a Criterion 4000 Bausch & Lomb telescope and would like to get a manual for it? I'm not sure where to get parts such as a camera adapter. Any help?
>david jon krohn

I have a T Mount for the back of a Bausch & Lomb Criterion 4000. In addition I also have three camera adapters for use with the mount; they fit the Canon AE1, Minolta SRT-201, and Pentax K-1000 cameras.

I also have an extra instruction manual for the telescope.

If you want them contact me ASAP; otherwise they are going on ebay with my B&L Criterion 4000.

Contact me at dwoolheater@yahoo.com

Richard Woolheater


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Subject: Re: vote by xxx.xxx.105.176
By: Anonymous (xxx.xxx.56.116)
In Reply to: Anonymous (xxx.xxx.168.195) (Original Message)
Date: 03/17/2005 11:20:29 pm PDT
>>I bought a Criterion 4000 Bausch & Lomb telescope and would like to get a manual for it? I'm not sure where to get parts such as a camera adapter. Any help?
>>david jon krohn
>
>I have a T Mount for the back of a Bausch & Lomb Criterion 4000. In addition I also have three camera adapters for use with the mount; they fit the Canon AE1, Minolta SRT-201, and Pentax K-1000 cameras.
>
>I also have an extra instruction manual for the telescope.
>
>If you want them contact me ASAP; otherwise they are going on ebay with my B&L Criterion 4000.
>
>Contact me at dwoolheater@yahoo.com
>
>Richard Woolheater
Richard,

I would be interested in the T-Mount and manual for the B&L Criterion 4000, if you still have them. rfarabee@tampabay.rr.com


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Subject: Re: vote by xxx.xxx.103.172
By: Anonymous (xxx.xxx.43.204)
Date: 10/22/2008 04:07:45 am PDT
I have one I bought on ebay. I really like it. with a 4incher you're not going to get great images at large magnification and yes, the finder scope is awful, but, then, I have never seen a finder scope that came with a scope that was anything but crap, and that includes the 8 inch Meades.

Yours,
Marty Rice


>Worst scope I ever owned. Nothing good about it really. Sold it.


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