Criterion Dynamax 8


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Subject: Criterion 800
By: Anonymous (xxx.xxx.120.64)
Date: 03/25/2002 12:08:53 am PDT
I purchased an 800 new in 1989. my first shock was when the stand arrived. It looked nothing like the ones in he ads. It was a cheapo which the scope wouldn't fit on without a visit to a workshop. It has never really given good views when looking at anything difficult ie Mars at opposition. The view was just a glowing shimmering "coal". For less demanding subjects, ie the Moon it performs quite well. Without taking it apart I have tried most things - collimantion, diagonal, good quality eyepiece without any improvement.


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Subject: Dynamax manual?
By: Anonymous (xxx.xxx.53.195)
Date: 06/02/2002 04:31:35 pm PDT
>I have a manual, which I intend to put through the scanner, so anyone interested could get a digital copy.

Hi - I have recently obtained a Dynamax 8-inch SCT. Do you think you could send me the manual in electronic form? petergrego@lineone.net


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Subject: Re: Dynamax manual?
By: Anonymous (xxx.xxx.99.205)
In Reply to: Anonymous (xxx.xxx.53.195) (Original Message)
Date: 06/12/2002 12:30:06 am PDT
I would like a copy of the Dynamax 8 manual, please. I've had my DX8 since 1981 and have long since lost the manual. If you could send a copy to me via e-mail at: mrc64@msn.com I would gratefully appreciate it!

Thanks!

Michael


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Subject: Re: vote by xxx.xxx.117.20
By: Anonymous (xxx.xxx.67.115)
Date: 06/26/2002 10:47:45 pm PDT
>I have bought my dynamax about 15 years ago from a collegue. I had to adjust the secondary mirror (which is a tedious) task. Nevertheless up till now I was reasonable content with it. The motor comes loose from time to time, but that's a matter of fixing the screws tight. The fork is OK. I have made my own equatorial mount on a sturdy demountable wooden structure. Nowadays it seems as if I can't focus the stars for 100% any more. The just out of focus images have dotted stars on several rings which are not perfect cicular. So the diffraction rings are visible only not circular. It wonder whether it is the mirror, the correction plate or the secondary mirror. I hope to find out soon. I am working on a Foucault test, to measure the mirror more detailed. When the tube is exposed to sunlight for longer times (weeks) than some deposit might show-up on the inside of the correction plate. Just cleaning with a little soap and water does the job. There might be some deposit on the two mirrors as well. My former collegue has made beautiful pictures with it. So I think the two mirrors have to be recoated again. The locks on the declination and hour axes have to be readjusted. To much weight on the tube is a slight problem. Then the whole scope becomes a little wobbly. I have a manual, which I intend to put through the scanner, so anyone interested could get a digital copy.
>A major draw back is the relative long cooling time of the scope. The longer it stays in the open air the better the images. I do mainly visual observations. and on very cold and clear skies in the Netherlands (which has heavenly light pollution!) I can reach sometimes magnitude 12 - 13. M13 is still a problem I can't resolve the stars, maybe it is also my eyes.


Hello - I have bought an used Dynamax 8 SCT, but without manual. Would you please be so kind and send me the manual in electronic form? Thank´s a lot! bernhard.kropac@clariant.com


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Subject: Re: vote by xxx.xxx.117.20
By: Anonymous (xxx.xxx.227.246)
Date: 10/05/2002 07:28:19 pm PDT
>I've had mine for about 3 years and have never had a manual. I would appreciate it if you could send me a copy of the electronic version to uffda@ns.sympatico.ca

Thanks


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Subject: Re: vote by xxx.xxx.117.20
By: Anonymous (xxx.xxx.253.71)
In Reply to: Anonymous (xxx.xxx.67.115) (Original Message)
Date: 10/23/2003 11:08:10 am PDT
>>I have bought my dynamax about 15 years ago from a collegue. I had to adjust the secondary mirror (which is a tedious) task. Nevertheless up till now I was reasonable content with it. The motor comes loose from time to time, but that's a matter of fixing the screws tight. The fork is OK. I have made my own equatorial mount on a sturdy demountable wooden structure. Nowadays it seems as if I can't focus the stars for 100% any more. The just out of focus images have dotted stars on several rings which are not perfect cicular. So the diffraction rings are visible only not circular. It wonder whether it is the mirror, the correction plate or the secondary mirror. I hope to find out soon. I am working on a Foucault test, to measure the mirror more detailed. When the tube is exposed to sunlight for longer times (weeks) than some deposit might show-up on the inside of the correction plate. Just cleaning with a little soap and water does the job. There might be some deposit on the two mirrors as well. My former collegue has made beautiful pictures with it. So I think the two mirrors have to be recoated again. The locks on the declination and hour axes have to be readjusted. To much weight on the tube is a slight problem. Then the whole scope becomes a little wobbly. I have a manual, which I intend to put through the scanner, so anyone interested could get a digital copy.
>>A major draw back is the relative long cooling time of the scope. The longer it stays in the open air the better the images. I do mainly visual observations. and on very cold and clear skies in the Netherlands (which has heavenly light pollution!) I can reach sometimes magnitude 12 - 13. M13 is still a problem I can't resolve the stars, maybe it is also my eyes.
>
>
>Hello - I have bought an used Dynamax 8 SCT, but without manual. Would you please be so kind and send me the manual in electronic form? Thank s a lot! bernhard.kropac@clariant.com
Hello - I lso purchased a dynamax 8 recently and would also appreciate an electronic copy of the manual.
cbroderick8@attbi.com


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Subject: Re: vote by xxx.xxx.117.20
By: Anonymous (xxx.xxx.244.250)
In Reply to: Anonymous (xxx.xxx.253.71) (Original Message)
Date: 12/01/2003 09:30:31 pm PDT
>>>I have bought my dynamax about 15 years ago from a collegue. I had to adjust the secondary mirror (which is a tedious) task. Nevertheless up till now I was reasonable content with it. The motor comes loose from time to time, but that's a matter of fixing the screws tight. The fork is OK. I have made my own equatorial mount on a sturdy demountable wooden structure. Nowadays it seems as if I can't focus the stars for 100% any more. The just out of focus images have dotted stars on several rings which are not perfect cicular. So the diffraction rings are visible only not circular. It wonder whether it is the mirror, the correction plate or the secondary mirror. I hope to find out soon. I am working on a Foucault test, to measure the mirror more detailed. When the tube is exposed to sunlight for longer times (weeks) than some deposit might show-up on the inside of the correction plate. Just cleaning with a little soap and water does the job. There might be some deposit on the two mirrors as well. My former collegue has made beautiful pictures with it. So I think the two mirrors have to be recoated again. The locks on the declination and hour axes have to be readjusted. To much weight on the tube is a slight problem. Then the whole scope becomes a little wobbly. I have a manual, which I intend to put through the scanner, so anyone interested could get a digital copy.
>>>A major draw back is the relative long cooling time of the scope. The longer it stays in the open air the better the images. I do mainly visual observations. and on very cold and clear skies in the Netherlands (which has heavenly light pollution!) I can reach sometimes magnitude 12 - 13. M13 is still a problem I can't resolve the stars, maybe it is also my eyes.
>>
>>
>>Hello - I have bought an used Dynamax 8 SCT, but without manual. Would you please be so kind and send me the manual in electronic form? Thank s a lot! bernhard.kropac@clariant.com
> Hello - I lso purchased a dynamax 8 recently and would also appreciate an electronic copy of the manual.
>cbroderick8@attbi.com

I have the opportunity to purchase a Criterion scope and would like a copy of the manual please. Thanks!!! LFOLER@Comcast.net


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Subject: Re: Dynamax manual?
By: Anonymous (xxx.xxx.204.35)
In Reply to: Anonymous (xxx.xxx.53.195) (Original Message)
Date: 08/27/2005 04:33:28 pm PDT
>>I have a manual, which I intend to put through the scanner, so anyone interested could get a digital copy.
>
>Hi - I have recently obtained a Dynamax 8-inch SCT. Do you think you could send me the manual in electronic form? petergrego@lineone.net

Hi, I also have a dynamax 8 and with no manual and need a digital copy as well. Thanks for putting it on the computer.
gpuchosic@hotmail.com


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Subject: Re: Dynamax manual?
By: Anonymous (xxx.xxx.141.110)
In Reply to: Anonymous (xxx.xxx.204.35) (Original Message)
Date: 09/01/2005 10:44:15 pm PDT
Greetings - I just came into possession of a very nice Criterion Dynamax 6 SCT - however, it was missing the manual - if you would be so kind, I would appreciate it if you also sent me a copy of your scanned document. My email address is xxxxxxxxxx@gmail.com. Thanks!


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Subject: Re: Dynamax manual?
By: Anonymous (xxx.xxx.100.199)
In Reply to: Anonymous (xxx.xxx.204.35) (Original Message)
Date: 12/25/2005 07:41:56 pm PDT
>>>I have a manual, which I intend to put through the scanner, so anyone interested could get a digital copy.
>>
>>Hi - I have recently obtained a Dynamax 8-inch SCT. Do you think you could send me the manual in electronic form? petergrego@lineone.net
>
>Hi, I also have a dynamax 8 and with no manual and need a digital copy as well. Thanks for putting it on the computer.
>gpuchosic@hotmail.com

Hi, I got a Dynamax 8 for Christmas - is the manual still available to download?
mishacj@aol.com


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