New Posts New Posts RSS Feed - Help ... on my binocular details...
  FAQ FAQ  Forum Search   Events   Register Register  Login Login

Check GunBroker.com for SWFA's No Reserve and No Minimum bid firearm auctions.

Help ... on my binocular details...

 Post Reply Post Reply   Topic Search Topic Search  Topic Options Topic Options
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/04/2011 at 05:14
tigerheli View Drop Down
Optics GrassHopper
Optics GrassHopper
Avatar

Joined: December/04/2011
Location: INDIA
Status: Offline
Points: 2
Dear all,
 
My first post on this forum. Please help me to understand the type and quality (if possible) based on the following specifications. It was purchased more than 15 to 20 years back and handed over to me by my father.... I have used it for bird watching, general purpose viewing and the image is good. The lenses seem to have developed some fungus and I am not sure how to clean them.
 
Super Zenith
Coated optics
10 x 40 mm
Weitwinkel (what does this mean)
132m/1000m (what does this mean)
 
not sure if the above specifications are good for bird watching. please help me understand the above numbers. If not, I may have to purchase a new one, but I wanted to know how good is this one before buying a new one. All I know is 40/10 = 4mm exit pupil which is considered to be ok.
 
Thanks,
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/04/2011 at 08:52
Bitterroot Bulls View Drop Down
Optics Master Extraordinaire
Optics Master Extraordinaire
Avatar

Joined: May/07/2009
Location: Montana
Status: Offline
Points: 3388
It seems that Super Zenith is a brand name.  Coated optics mean the glass has a single antireflective coating on at least some air-to-glass surfaces.  10X40mm refers to the magnification (10x) and the objective lens diameter (40mm).  Weitwinkel is german for "widespread" referring probably to a wide field of view.  132m/1000m refers to the field of view.  The binocular shows 132m from edge to edge at 1000m away from the binocular.
 
The only way to clean the binocular of fungus is to send them to a skilled optic repair facility and have them disassembled, cleaned and reassembled. 
 
 
Welcome to the OT!


Edited by Bitterroot Bulls - December/04/2011 at 08:53
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/04/2011 at 21:07
tigerheli View Drop Down
Optics GrassHopper
Optics GrassHopper
Avatar

Joined: December/04/2011
Location: INDIA
Status: Offline
Points: 2
thanks Matt for helping me to understand my bino specs better. There is no optic repair facility close by to my place. Guess, I will remove the main lens (front one), seems to be threaded and then clean it myself and fit it back. Can you help to calculate the degress based on these specs, or in general how do we calculate the degrees ? Is it possible?
thanks - Ravi
 
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/04/2011 at 21:43
Klamath View Drop Down
Optics Master
Optics Master
Avatar

Joined: May/20/2007
Location: United States
Status: Offline
Points: 1269
The fov for your binocular is 7.5*.  That gives it an apparrent field of view of 75*.  Apparrent fov=degrees in fov x magnification of the binocular.  Each degree of fov is either 52.5 feet at 1,000 yards or 17.5 meters at 1,000 meters.
 
OK, Fungus can be nasty stuff.  It happens when water/humid air gets inside a non waterproof binocular.  The problem is that fungus usually etches the surface of the glass (prism or lens) it grows on.  It is not easy to take apart a binocular and get it back together so everything is collimated right.  Unless you know how and have the right tools, and a dust free environment to work in.  Chances the glass surface is bad and cleaning will not help it.  SO if it is usable as is, I think I might leave it alone.  Unless you have resources to buy another binocular.  This way you have something you can use.


Edited by Klamath - December/04/2011 at 21:44
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/04/2011 at 22:01
Bird Watcher View Drop Down
Optics Master
Optics Master
Avatar

Joined: August/30/2006
Status: Offline
Points: 1490
Originally posted by Klamath Klamath wrote:

It is not easy to take apart a binocular and get it back together so everything is collimated right.  Unless you know how and have the right tools, and a dust free environment to work in.  Chances the glass surface is bad and cleaning will not help it.  SO if it is usable as is, I think I might leave it alone. 
Exactly.
 Post Reply Post Reply
  Share Topic   

Forum Jump Forum Permissions View Drop Down

Similar Threads: "Help ... on my binocular details..."
Subject Author Forum Replies Last Post
Help me choose a tactical binocular with reticle fnbrowning Binoculars 2
help with binocular purchase please billiam13 Binoculars 20
Seeking help selecting a binocular revo74 Binoculars 11
FOUR SQUARE binocular HELP ? foursquare Binoculars 4
help needed from the binocular experts billiam13 Binoculars 4
Binocular Help mlglock40 Binoculars 7
Help Selecting 10x42 Binocular gjcrop Binoculars 0
Binocular Newbie Help encorepete Binoculars 1 10/31/2005 10:27:14 AM
New Binocular Purchase Please Help jbroadnax Binoculars 2 9/11/2006 1:55:42 PM
binocular experts help me decide nohornes Binoculars 11 1/9/2007 11:36:38 AM


This page was generated in 0.330 seconds.