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Showing results 1 to 25 of 1000
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Search: Posts Made By: jring
Forum: Binoculars Today, 11:59
Replies: 8
Views: 373
Posted By jring
I would be astonished if your demands or a poll...

I would be astonished if your demands or a poll result will make mother nature change physics. As Alan has explained, a wider apparent field means a wider true field and thus eyepiece and prisms need...
Forum: Bird Sounds Recording Eqpt & Discussion Wednesday 18th September 2019, 16:38
Replies: 4
Views: 162
Posted By jring
Hi, as for in-ears you might want to try some...

Hi,

as for in-ears you might want to try some from Etymotic... they will remove external sound very well (they're actually sold without speakers as earplugs) and are quite neutral...

Joachim
Forum: Tripod and Heads Wednesday 18th September 2019, 05:34
Replies: 22
Views: 539
Posted By jring
Hi, the PH157Q is NOT a fluid head! The Sirui...

Hi,

the PH157Q is NOT a fluid head! The Sirui VA-5 looks good on paper for a light load up to 1kg (which is what it is compensated for). Your 663 will be slightly overweight - might still work ok....
Forum: Binoculars Tuesday 17th September 2019, 15:37
Replies: 18
Views: 823
Posted By jring
Hi, don't hold your breath - even my source at...

Hi,

don't hold your breath - even my source at Leica has stopped believing in them coming...
The 7x35 would have been nice... maybe will try the Kowa 6.5x32 when it comes out...

Joachim
Forum: Binoculars Tuesday 17th September 2019, 11:26
Replies: 11
Views: 333
Posted By jring
Inner tube with a wider diameter? Joachim

Inner tube with a wider diameter?

Joachim
Forum: Binoculars Sunday 15th September 2019, 22:13
Replies: 33
Views: 912
Posted By jring
Hi, quite frankly, the differences between alpha...

Hi,

quite frankly, the differences between alpha pairs are really small especially if you look at just one size - it is much down to personal preference for stuff like balance, focus travel and feel...
Forum: Binoculars Sunday 15th September 2019, 22:00
Replies: 11
Views: 333
Posted By jring
Hi, could you prolong the twisted down eyecups...

Hi,

could you prolong the twisted down eyecups with some bicycle tube to get a fit?

Or 3D printing as has been recommended by Binastro!

Joachim
Forum: Spotting Scopes & tripod/heads Friday 13th September 2019, 20:51
Replies: 25
Views: 802
Posted By jring
Hi, I found a 60mm Aspectem with the legendary...

Hi,

I found a 60mm Aspectem with the legendary 12.5mm EP on german eBay and luckily it was straight... otherwise I would have been very tempted...

Joachim
Forum: Spotting Scopes & tripod/heads Friday 13th September 2019, 07:53
Replies: 25
Views: 802
Posted By jring
Hi Herrmann, I believe that the Asiola works...

Hi Herrmann,

I believe that the Asiola works well up to 42x (not yet been able to try one) - I'm quite sure Zeiss wouldn't have sold it that way if it didn't. It probably wouldn't fare so well at...
Forum: Spotting Scopes & tripod/heads Thursday 12th September 2019, 17:23
Replies: 17
Views: 654
Posted By jring
Hi, scratch my remark about 80-100x - that was...

Hi,

scratch my remark about 80-100x - that was for 80mm scopes - you need 66-83x... so at 60x you're just a bit short...

But still, depending on your eyesight some more magnification might...
Forum: Spotting Scopes & tripod/heads Thursday 12th September 2019, 16:38
Replies: 17
Views: 654
Posted By jring
Hi, I think you need more magnification... like...

Hi,

I think you need more magnification... like 80 - 100x for 1mm to 0.8mm exit pupil.
Is there an extender available or do you have a doubler or tripler?

Joachim
Forum: Nikon Thursday 12th September 2019, 15:51
Replies: 6
Views: 436
Posted By jring
Hi, the new warranty sounds just like your...

Hi,

the new warranty sounds just like your generic warranty over here in europe - although it's usually 10y for everything...

Joachim
Forum: Spotting Scopes & tripod/heads Thursday 12th September 2019, 14:59
Replies: 17
Views: 654
Posted By jring
Hi, since the o.p. has asked for images of a...

Hi,

since the o.p. has asked for images of a star test of one of my scopes... as he has experienced taking good images of what one sees in a star test is not trivial and I don't have any (not much...
Forum: Spotting Scopes & tripod/heads Thursday 12th September 2019, 06:15
Replies: 25
Views: 802
Posted By jring
Hi Herrmann, remember that the lines from König...

Hi Herrmann,

remember that the lines from König & Köhler were written at a time when fluorite loaded ED glass was not yet discovered and the only way to get ok colour correction in a fast refractor...
Forum: Spotting Scopes & tripod/heads Wednesday 11th September 2019, 16:33
Replies: 17
Views: 654
Posted By jring
Hi, can't say a lot from these images - they...

Hi,

can't say a lot from these images - they don't look very concentric - especially the outside ones. But using the 8x bins is not ideal in my opinion as it introduces other unknowns into the...
Forum: Nikon Wednesday 11th September 2019, 14:00
Replies: 9
Views: 505
Posted By jring
Hi, I think it is officially only sold in Japan...

Hi,

I think it is officially only sold in Japan but there are quite a lot of japanese resellers on ebay (at least that's where I got mine a few years ago). Remember you might have to pay taxes and...
Forum: Kowa Wednesday 11th September 2019, 13:21
Replies: 103
Views: 9,461
Posted By jring
Thank you Gijs - I couldn't have put it in better...

Thank you Gijs - I couldn't have put it in better words!

Which brings us to the interesting question - what about optics with magnesium bodies on aircraft? Magnesium is on the list... only powder,...
Forum: Spotting Scopes & tripod/heads Tuesday 10th September 2019, 10:53
Replies: 5
Views: 341
Posted By jring
Hi, the 27/40/50x DS has a rubber eyecup - no...

Hi,

the 27/40/50x DS has a rubber eyecup - no problem with glass to glass contact. The point is probably the lack of eye relief and thus a diminished field of view since the distance between eye and...
Forum: Spotting Scopes & tripod/heads Monday 9th September 2019, 17:50
Replies: 10
Views: 327
Posted By jring
Hi, I used a patch at the start too but have...

Hi,

I used a patch at the start too but have learned to observe with both eyes open... it helps if there is nothing to see with the other eye because the stay-on case is blocking the view...

Joachim
Forum: Spotting Scopes & tripod/heads Monday 9th September 2019, 14:13
Replies: 11
Views: 386
Posted By jring
Hi, this sounds like the moving porro prism is...

Hi,

this sounds like the moving porro prism is not only moving along the optical axis (as it should) but also in a way it's not supposed to... not sure which way to result into what you see - maybe...
Forum: Spotting Scopes & tripod/heads Monday 9th September 2019, 05:57
Replies: 5
Views: 341
Posted By jring
Hi, thanks for sharing, sounds like a great idea...

Hi,

thanks for sharing, sounds like a great idea and for spotting scopes it is new, I think.

For astro eyepieces not so much, Televue offers correction lenses ground to your prescription which fit...
Forum: Spotting Scopes & tripod/heads Saturday 7th September 2019, 17:40
Replies: 11
Views: 386
Posted By jring
Hi, the Optolyth page touts CaF2 for the HDF...

Hi,

the Optolyth page touts CaF2 for the HDF version. You can test it with a green laserpointer. If you shine that into the objective, you will see two reflections connected by a line where light is...
Forum: Spotting Scopes & tripod/heads Saturday 7th September 2019, 17:09
Replies: 17
Views: 654
Posted By jring
Hi, using lights on a building is an interesting...

Hi,

using lights on a building is an interesting idea... the question is, if their image is small enough. Vlad gives the following formula for the maximum diameter:

distance in mm / (3000 *...
Forum: Spotting Scopes & tripod/heads Friday 6th September 2019, 20:46
Replies: 11
Views: 386
Posted By jring
Hi, I remember one HD example which was not...

Hi,

I remember one HD example which was not impressive - ok at 30 but not beyond.

Joachim
Forum: Spotting Scopes & tripod/heads Friday 6th September 2019, 15:04
Replies: 17
Views: 1,016
Posted By jring
Hi, an airport terminal should be at least large...

Hi,

an airport terminal should be at least large enough, although not sure if aircon will make for bad seeing.

You can make an artificial star like this:

- take a piece of alumuminum foil and...
Showing results 1 to 25 of 1000
 


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