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Old 16-09-2017, 12:27 AM
AEAJR (Ed)
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AEAJR is offline
 
Join Date: Mar 2016
Location: Long Island, New York, USA
Posts: 372
Cool

Quote:
Originally Posted by FlashDrive View Post
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...
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.

Last edited by AEAJR; 20-09-2017 at 03:45 AM.
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