My Binoculars

Look | Basic Data | Visited Sky Objects | Conclusions | Links

In progress

On this page, I provide some information about my two binoculars, which I also use to observe sky objects. One of them is my fairly old Leica Trinovid 10 x 25 BC, and the latest one are the TS 10 x 60 LE Porro binoculars.

I bought the Leica Trinovid in the early 1990s, because I wanted compact and powerful binoculars that I would gladly take with me on my trips. It did not disappoint me in this respect. Of course, I also used the binoculars for sky observations, well knowing that it is actually the exact opposite of a night glass, because until recently I had no other binoculars. The moon can be observed quite well with these binoculars, and in 2017, I was even able to see the Andromeda galaxy very nicely at the dark French night sky (in any case, better than ever before...). These binoculars are also well suited to observing larger open star clusters, although a magnification of 10 x is sometimes already too much, whereas for smaller open and globular clusters (and most galaxies) it may be too little...

I bought the TS 10 x 60 LE Porro binoculars in October 2017 (at Teleskop-Spezialisten), because, after the good experiences in September 2017 with a dark night sky in France, I wanted to explore whether a night glass can show even more objects than the Leica binoculars already do. So far, however, I had no opportunity to test the TS binoculars.

 

Look

A special feature of the Leica Trinovid is that you can push the eyepieces together if you use the binoculars with glasses. With the TS binoculars, you can fold back the rubber eyecups for this purpose.

 

Technical Data

  Leica Trinovid 10 x 25 BC TS 10 x 60 LE
Aperture 25 mm 60 mm
Magnification 10 x 10 x
Entry Pupil 25 mm n.a. (60 mm?)
Exit Pupil 2.5 mm 6 mm
Prism Type Dachkant prisms? Porro prisms (BAK-4)
Coating n.a. Full broadband multicoating
Twilight Factor 15.8 24.5
Eye Relief n.a. 19,9 mm - retractable rubber eyeguard, fully suitable for spectacle wearers
Field of View 90 m for 1000 m / 5.2 ° true field of view 92 m for 1000 m / 5.3° true field of view
Focus Range 5 m to infinity 6 m to infinity
Weight 245 g g (242 g including carrying strap*) 1200 g (1075 g including carrying strap*)
Dimensions 110 x 60 x 36 mm (LxWxH) 230 x 190 x 75 mm (LxWxH)
Rubber Armouring no yes
Tripod Adaptation no yes, optionally available (adapter)

*) own measurement

 

Visited Sky Objects

Leica Trinovid 10 x 25 BC

For these binoculars, which I own for more than 20 years, I list only a few observations from the recent past (in which I dealt more deeply with deep sky objects). Where the location is missing, the observations took place at home in Mühlhausen/Kraichgau.

TS 10 x 60 LE

I acquired these binoculars in October 2017 and thus, my observations start with this date:

 

Conclusions

Leica Trinovid 10 x 25 BC

In preparation

TS 10 x 60 LE

In preparation

 

Links

 

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gerd (at) waloszek (dot) de

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15.10.2017