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CESDewar
GorillAstronomer
Reged: 01/16/05
Posts: 1745
Loc: Morganton, GA, USA
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Re: Miyauchi 5x32 First Impressions/First Light
09/26/07 10:53 PM
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Arrived today, so I took them out tonight for a quick view, but with humidity approaching 80% and a full moon, this was not exactly the ideal viewing!
Nevertheless, I could quickly tell these will be keepers, and I'm definitely looking forward to taking these out under 6.5 mag skies.
In spite of the moon, there were still some good views - seeing the entire constellation of Sagittarius and the Coathanger all at once, Lyra easily (as has been mentioned - and the false double just split), top or bottom 4 stars of Cassiopeia, and the beautiful ring of Corona Borealis - I've never seen that so clearly before (needs at least 10° to see all of that at once nicely).
I don't think the perceived sharpness at the bottom of the FOV vs. the sides is based on optics, but rather on the fact that one can tilt the binoculars up and down and still maintain both eyes at the same distance from the lenses, but you can't do that from side to side. I tried rotating the binoculars 90° and didn't see the "sharper axis" rotating as well. The positioning of the pupil is pretty critical and affects the sharpness at the edge and it's easier to get the positioning correct up/down.
I agree with others that this is a rather specialized pair of binoculars, but I'm just betting these become a regular companion on dark sky viewing nights.
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