Jump to content


Which Leica zoom?

  • Please log in to reply
4 replies to this topic

#1 Taeyoung



  • -----
  • Posts: 32
  • Joined: 26 Apr 2010

Posted 14 November 2012 - 09:25 AM

I'm siriously considering to buy Leica zoom eyepiece.
There are Two Leica's, 20x-60x, 25x-50x ASPH.
Which one is better?

My main purpose is Planetary and moon observing^^



    Surveyor 1

  • *****
  • Posts: 1862
  • Joined: 22 Nov 2011
  • Loc: Mendon, MA

Posted 14 November 2012 - 11:55 AM

First what kind of scope do you have?

#3 Taeyoung



  • -----
  • Posts: 32
  • Joined: 26 Apr 2010

Posted 14 November 2012 - 06:38 PM

My scope is 10" F4.8 Dobsonian.
And I'm under making 13.1" F4.5 Dobsonian.
13.1" will be my main telescope^^

#4 sixela


    Voyager 1

  • *****
  • Posts: 14318
  • Joined: 23 Dec 2004
  • Loc: Boechout, Belgium

Posted 14 November 2012 - 08:05 PM

What´s very different about them is the apparent field of view. The ASPH really is a widefield zoom, the older one is not. So if you have the money for it, the ASPH is more versatile. But it´s also heavier and wider and its range is narrower.

For planetary and lunar observation in an f/5 scope you really want to combine it with a Baader VIP barlow or Astrophysics BarAdv, though: better edge performance on the moon and a more useful focal length range.

See also http://www.cloudynig...3902143/Main... .

#5 johnnyha


    Fly Me to the Moon

  • *****
  • Posts: 6508
  • Joined: 12 Nov 2006
  • Loc: Sherman Oaks, CA

Posted 14 November 2012 - 11:22 PM

The ASPH Zoom is considered the better of the two, but as Alexis says, its mainly due to the larger FOV, they are both great eyepieces. The ASPH though has been compared to the ZAO-IIs for on-axis performance.

CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.

Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics