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the faintest star do you see?

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#1 jack savard

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Posted 05 July 2005 - 11:32 AM

ok what is the faintest star or object do you see?

this site http://www.go.ednet....o/maglimit.html
tell us how to calculted for telescope but not for binocular;
somebody said for binocular with one eye we can say (ADD?) 0.38
theoretical.
in real world
I can say I see all the Pleiades stark, that is 12 mag in the bad sky of quebec city.
I have 25 x 100 chinise binocular but very big eye relief
excellent for me.

and you, what is your faintest object?

:tonofbricks:

mod note:
Jack, just trying to help out a little here.
edz

#2 EdZ

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Posted 05 July 2005 - 11:44 AM

Hi Jack,

I've tried many times to find out,
what is the faintest star I can see with my binoculars.

With my 25x100s the faintest I have seen is mag 12.0 under a mag 5.7 sky. If I could get those 25x100s to a darker sky, say mag 6.5, I would be able to see fainter stars.

The faintest star I have ever seen under mag 5.7 skies
with a 20x80, mag 11.3
with a 15x70, mag 10.9
with a 12x50, mag 10.7
with a 10x50, mag 10.5

edz

#3 Pinewood

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Posted 06 July 2005 - 01:32 PM

You might want to look at this site:
http://web.telia.com...al/limiting.htm
The author clearly writes that this is for dark skies with a tripod.
About twenty years, ago, on a wintry night, when I lived in light polluted Brooklyn, using a 7x50 binocular, I spotted an object near Saturn. The next night, I saw the object had changed its position relative to the planet. In those days, I was new to astronomy and I did not have an ephemeris and the web was hardly a reality. A 'phone call to the Hayden Planetarium's information desk, confirmed that it was Titan, which is magnitude 8.3.
Now that I live in Manhattan, I doubt if I could repeat that observation. Attempts to see other moons of Saturn with a 12x50 have been fruitless, but would seem to be within Edz's capabilities.
I would guess that Quebec City is no worse than Brooklyn.

Clear skies,
Arthur

#4 Guest_**DONOTDELETE**_*

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Posted 06 July 2005 - 03:50 PM

the faintest I saw, coming in and out of sight in the place I live nekkid eye was HR4634 in the southern cross. Cartes du Ciel says it is a mag 6.08 star. This happened last week. In the last new moon my girl saw 6.22 and I was stuck ant 5.72 - she´d probably beat me this time too. With a bino/telescope, however, I didn´t recorded. Dunno if it´s just me, but sometimes, naked eye observing seems more exciting :)

cheers!


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