Winter nightmares.... (1 Viewer)

Binoseeker

Mostly using spectacles (myopic) with binoculars.

• Dec 1, 2013

• #41

Conquest HD

According to this it seems the Conquest HD seems to function down to -20°C, i am not sure how well though.."goed gangbaar" = acceptable? :

http://translate.google.se/translat...ten/telescoop/Zeiss Conquest HD.htm&sandbox=1

Edit: Focuser movement was good, "5/4"...

Anders

 

Last edited: Dec 1, 2013

S

SteveTS

Well-known member

• Dec 1, 2013

• #42

About a year ago Vanguard did a 24hr freezing test for the following binos :

Vanguard Endeavor ED 8.5x45, Endeavor ED 10x42, Endeavor ED 10x45,
Vanguard Spirit ED 8x42, and Spirit Plus 8x42

The details of their testing session can be found here :

http://www.vanguardworld.co.uk/index.php/pv/products/keep-challenging-our-products.html

Although this forum has it's share of Vanguard cryboys I find having a free flowing focuser in freezing weather very useful

 

Troubador

Moderator

Staff member

Supporter

• Dec 1, 2013

• #43

Hej Anders

Here is one solution that many birds know is a good one:

Fly south for the winter :t:

Lee

 

Binoseeker

Mostly using spectacles (myopic) with binoculars.

• Dec 1, 2013

• #44

Hej Lee,

I wish I could....

We still have a Oenanthe Deserti "Desert Wheatear" here that flew the other direction...has been here for a couple of weeks, will probably die here too when the snow comes.

Do you have any bins that can't focus when it gets cold, like up north, here, or are they only for summertime use...like my chin-bins ?

Anders

 

J

John Dracon

John Dracon

• Dec 4, 2013

• #45

Binoseeker - My most recent exposure test with the Leupold Cascade porro (last night) does not concur with your listing in your post #35. It reached -10 below last night or -23 C, and the porro was out all night. The focus was workable. One test does not equate to an absolute, however, so I will repeat the test when the temperatures drop even more. Here in Montana it is not uncommon to experience even -30 (-35 C) night time temperatures, so I'll wait for that and put them out again. I'll let you know the outcome when that happens. Stay warm!

John

 

Binoseeker

Mostly using spectacles (myopic) with binoculars.

• Dec 4, 2013

• #46

John,

I think different people have different opinion about focuser performance.
If two people tested the same bin at the same time, maybe one thought it was acceptable and the other not acceptable.

It is good to test bins like this and it is ok to put in different test results from the same type of bin. I try to put in a reference also from where the info came.
Check out the list, if i remember correctly there were listed different test results from the same type of bin.

Anders

 

FrankD

Well-known member

• Dec 4, 2013

• #47

Binoseeker said:

John,

I think different people have different opinion about focuser performance.
If two people tested the same bin at the same time, maybe one thought it was acceptable and the other not acceptable.....

Anders

Click to expand...

I couldn't agree more. I certainly have a preference for a specific combination of focusing tension and focusing speed. Others definitely have a different preference. What i have realized is that it can often be a make or break issue for many individuals including myself.