Limiting magnitude for Celestron Skymaster 15x70 ?
Posted 07 May 2005 - 09:32 PM
Not completely dark skies but fair. Would rate 7 out of 10.
Posted 08 May 2005 - 01:34 AM
Lotta variables to consider.
A pure guess with the info provided? Somewhere around 9th mag.
I suggest checking out the 'LINKS to Web - Binocular and Astro Info' and other links pinned to the top of this forum for info and starcharts to help estimate a bino's limiting magnitude.
Mounted binos can net you an extra magnitude or two, depending on sky conditions.
Ready to tackle the Herschel 400?
Posted 08 May 2005 - 06:03 AM
Posted 08 May 2005 - 06:33 AM
15x70, even skymasters a non FMC 15x70, can show you as deep as mag 10.5 if your skies are as dark as mag 5 to 5.5, the binoculars are absolutely still and you spend several minutes looking for each faint star with averted vision. Under the best possible conditions in mag 6 skies and mounted you would be lucky to reach mag 11.
A braced 15x70 not on a steady mount is probably not seeing any deeper than mag 9.5 even in the best skies.