Bausch & Lomb Legacy 10x50 WA Binoculars

Last Friday, me and my fellow graduate school student in astronomy were in Aringay, La Union to do some astronomical sketching. One of them brought along a Bausch&Lomb Legacy 10x50 wide-angle binoculars  with a 7.5degree field of view.

We also brought our Celestron UpClose 10x50 binoculars (see past post for review) and got to compare the quality of the two binocs. In comparison to the UpClose, the Legacy gave superb bright and sharp images that overpowered the UpClose. The rich open clusters like the Beehive cluster in Cancer, Melotte 111 in Coma Berenices, the Ptolemy's Cluster and Butterfly Cluster in Scorpius appear beautifully and brightly over the Legacy. We also could easily spot faint stars such as the Sidus Ludovicianum. Switching between the Legacy and the UpClose showed that the images on the UpClose were not as bright and as rich as those with the Legacy.

For those unfamiliar with binocular specs - the number 10x50 represents a magnification of 10x and an aperture of 50mm. The optics are multi-coated with anti-reflective layers that prevent light from reflecting back out allowing the image to be brighter. It makes use of a BaK-4 Porro prism design (yielding a brighter and sharper image compared to the commonly used Bk-7). The Legacy offers good eye relief and weighs 794g. It is also tripod adaptable for ease in viewing. The legacy is water proof and fog proof making it suitable for outdoors against temperature and humidity.

The Bausch & Lomb name here is not the same Bausch & Lomb that creates contact lenses, but is the Bausch & Lomb Sport Optics that is manufactured by Bushnell. Hahn stores all over Manila sell Bushnell binoculars, spotting scopes and even telescopes.

The Messier Objects

Since I’m stuck with binoculars these days I decided to write about one of the beautiful binocular objects – the Messier objects. In the 1700s, the French astronomer Charles Messier sought out to search for comets. In his search he encountered fuzzy-looking objects which he considered a nuisance. To avoid confusing them for comets, he made a catalog of these objects. He charted 103 Messier objects in his catalog which was published in 1781. What Messier considered a nuisance became more known than his comet discoveries. This catalog of deep-sky objects are some of the sky’s best star clusters (both open and globular), nebulae, and external galaxies.


Binoculars have their own advantage when viewing the messier objects. As an example, when we viewed the Orion Nebula through the C8 it all we could see is the Trapezium – a multiple system of newborn stars forming a trapezoid at the heart of M42. The larger nebulosity of the M42 is not visible through the C8. Binoculars are also adequate to show many individual stars in some of the open clusters. In other cases it would appear as a sort of blur of light. Higher magnifications can resolve the fainter stars. Globular clusters usually appear as a patch of light.

Here are some of the messier objects that I’ve imaged via the MicroObservatory Robotic Telescope Network, a network of automated telescopes that can be controlled online:

M31 Andromeda

M27 Dumbell Nebula

M16 Eagle Nebula

M81

M42 Orion Nebula

M33 Pinwheel Galaxy

M45 Pleiades (Seven Sisters) Star Cluster

M57 Ring Nebula

M20 Trifid Nebula

M51 Whirlpool

M1 Crab Nebula

M8 Lagoon Nebula

*NOTE: The human eye is not sensitive enough to see the colors of the nebulae and galaxies even through a big telescope. The colors are brought out using filters during long-exposure photographs.

Binocular Astronomy 21 Aug 2011

I took advantage of the clear skies tonight after days of cloudy skies. I set out to view as many objects as I can with my Celestron UpClose binoculars. All I had to struggle with was the light pollution from my observing site in Cubao and the fact that I had colds. Nevertheless, clear skies don't come as often.

I trained my binoculars for the constellation Scorpius. My first thought was I need to see the M7 (Ptolemy's cluster/NGC 6475) which remained elusive in my past observation attempts in Cubao. However, I found myself observing the Scorpius Jewel Box (NGC 6231) first. It remained beautiful despite being washed out by light pollution. Then I also caught a glimpse of NGC 6242 which appeared faint. Finally I turned to the position of M7. Luckily I was able to find it with little difficulty. They appeared beautifully as faint fuzzy stars. Next, I moved up and also observed the Butterfly nebula (M6/NGC 6405). I then moved to Sagittarius and found the Lagoon Nebula (M8/NGC 6523) appearing as a fuzzy patch. Moving to the west I came across the bright Arcturus (Alpha Bootis). I turned north to the summer triangle and focused on Cygnus. NGC 6871 appeared very faint, likewise with M29.



I haven't taken binocular astronomy seriously before, and I realized what a waste it was since I had good observing sites in Negros. However, I would still love to have my telescope around. I hope the skies continue to clear up from now on.

Summer Triangle