Jump to content

  •  

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.

Photo

APM 100 and 120mm. Semi apo compared to SD apo series

  • Please log in to reply
No replies to this topic

#1 dozerdan

dozerdan

    Lift Off

  • *****
  • topic starter
  • Posts: 19
  • Joined: 23 Feb 2011
  • Loc: Seattle, Washington

Posted 15 January 2022 - 06:10 AM

Looking at APM binoculars.  90 degree.

Considering both 100mm and 120mm.

I am asking what difference in perform is seen between the Semi APO and the SD APO.

Within the Semi APO is there a gain in moving up from the 100mm to the 120mm, both being the Semi apo.

Or is it best to go with the 100mm SD APO.

Truly asking comparison of Semi apo to the more costly SDapo in the 100mm series.

 

 


  • 25585 and Mr.etrain like this


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.


Recent Topics






Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics