[ATM] Quirky idea

[tkrajci at san.osd.mil (Tom Krajci)]

>From: Grey Coyote <greycoyotee@yahoo.com>

>...I am indeed refering to focal length of the eyepiece....

> I may actually be using the wrong terminology here.
> What I am using for magnification is focal length of
> the telescope, in my case 750mm divided by the
> aperature of the eyepiece, say 12 mm....

>...Commercial ccd's like starlight are at 3 mm and 5 mm
> aperatures.....

>...I have a
> spreadsheet a friend got off the web that shows
> optimal viewing for large
> nebulas is 48x. Optimal viewing for globulare
> clusters is 180x. That's a
> wide range. To go from 250x to 180x with 3mm one
> would need to use a focal
> reducer with the ccd.... 
 
>...Some people out there have way more than 750 mm
> focal
> length ;O) Say 2100 and above. These people would be
> able to use a larger array say 4 across and 4 deep.
> That would be about 8mm maybe as much as 10mm in
> aperature. The sensitivity would be much greater
> allowing deeper than mag 13 objects. One would want
> focal reducers for stepping power lower....

Lots of concepts and terms being mis-labelled or mis-applied here.

"Word-pictures" are not working well here for me.  A picture is worth a
thousand words.

Can you post any drawings of your proposal?

Tom Krajci
Tashkent, Uzbekistan


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