Inverted Sextant Scope

clausont · 24-08-2008, 19:11

My wife had bought me a Russian Cho-M sextant a while back. I am now ready to try to start learning how to use it. The problem is that it seems to have come with the up-side-down scope and I don't think that would quite make it any easier to learn to use (nearly impossible?).
I understand that there are replacement scopes that may work on this sextant. Does anybody have any information on where I might look to find the correct scope or any suggestions on what to look for in a scope for this model?
With that said, does anybody have any experience with this model of sextant or know anything about its accuracy and quality?
Thanks

Lodesman · 24-08-2008, 19:59

The inverting scope is a higher magnification (6 or 7x) which is meant for use with the minor (faint) stars. Not at all good for general use and certainly not for learning. Celestaire carry non-magnifying sight tubes which would be suitable for learning as well as with moon, sun and brighter bodies http://celestaire.com/catalog/products/0510.html
What you really need is a 3.5 or 4x40 scope - apparently you can get one here: http://landandseacollection.com/id289.html

Have fun with it.

Kevin

clausont · 24-08-2008, 20:56

Thanks Kevin - I appreciate this information. I will check with them.

24-08-2008, 19:11	#1
clausont Registered User Join Date: Mar 2007 Location: Pacific NorthWest Boat: Ingrid 38 Posts: 328 Images: 57	Inverted Sextant Scope My wife had bought me a Russian Cho-M sextant a while back. I am now ready to try to start learning how to use it. The problem is that it seems to have come with the up-side-down scope and I don't think that would quite make it any easier to learn to use (nearly impossible?). I understand that there are replacement scopes that may work on this sextant. Does anybody have any information on where I might look to find the correct scope or any suggestions on what to look for in a scope for this model? With that said, does anybody have any experience with this model of sextant or know anything about its accuracy and quality? Thanks __________________ A wife. Five kids. And a now an Ingrid 38! We are sailing

24-08-2008, 20:56	#3
clausont Registered User Join Date: Mar 2007 Location: Pacific NorthWest Boat: Ingrid 38 Posts: 328 Images: 57	Thanks Kevin - I appreciate this information. I will check with them. __________________ A wife. Five kids. And a now an Ingrid 38! We are sailing

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24-08-2008, 19:59	#2
Lodesman Registered User Join Date: Nov 2005 Location: Ottawa ON Canada Boat: 26' trailer sailer (starter) Posts: 813	The inverting scope is a higher magnification (6 or 7x) which is meant for use with the minor (faint) stars. Not at all good for general use and certainly not for learning. Celestaire carry non-magnifying sight tubes which would be suitable for learning as well as with moon, sun and brighter bodies http://celestaire.com/catalog/products/0510.html What you really need is a 3.5 or 4x40 scope - apparently you can get one here: http://landandseacollection.com/id289.html Have fun with it. Kevin