Quote:
Originally Posted by FlashDrive
What do you regard as the ' cut off ' focal length between High Mag ... and Low Mag
eg ... would 20mm and up be regarded as ' low mag ' ...anything under that you start to get into the ' high mag ' eyepieces
What would you regard to this....
Col...
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As noted by others it depends on the scope.
20 mm in my ETX 80 is 20X. In my 5" Mak it is 85X.
I am more of a zoom guy so I don't use fixed FL eyepieces as much as I used to.
For each of my scopes I have 1 or 2 low power wide view
- 1.25 focuser gets a 32 mm plossl
- 2" focuser gets a 38 mm and 25 mm 70 degree
Then I go to a zoom - 8-24 for the mid to high range. Either the Celestron or the Baader Hyperion zoom.
- In my mak, 5"/1900 mm the zoom handles it all after the 32 mm Plossl
- In my XT8i, 8"/1200 mm Dob it is zoom or zoom +2X barlow
- In my ETX 80 3.1"/400 mm it is zoom or zoom + 3X barlow
Those combinations cover the entire range of the scope for 95% of the situations. I am always working at the optimum magnification for this particular target. I have many other eyepieces but mostly I use the zooms.