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Search: Posts Made By: Binastro
Forum: Binoculars Today, 08:06
Replies: 18
Views: 395
Posted By Binastro
Alvin Clark 6 inch binocular telescope. APM? 12...

Alvin Clark 6 inch binocular telescope.

APM? 12 inch binoculars.

Japanese 180mm binoculars.

Zeiss Aspectem binocular.

Nikon WX binocular.
Forum: Leica Yesterday, 14:16
Replies: 18
Views: 695
Posted By Binastro
Mike, Pity I don't read the music under the...

Mike,
Pity I don't read the music under the Leica.

It is quite possible to get a perfect cosmetic binocular with poor objectives and poor performance.

It is quite impossible to say if a perfect...
Forum: Zeiss Sunday 5th April 2020, 15:19
Replies: 11
Views: 364
Posted By Binastro
Action Optics, Southampton probably has a...

Action Optics, Southampton probably has a replacement eyecup.

But he notes that there are different types, so ask first.

I think that the small missing part could be built up on the existing...
Forum: Leica Sunday 5th April 2020, 14:49
Replies: 18
Views: 695
Posted By Binastro
Hi Mike, My old 12x50 UV is very good, except...

Hi Mike,

My old 12x50 UV is very good, except that I cannot accurately set the dioptre in the dark. As I push down there is a slight rotation, and I am very sensitive to dioptre.

I would think that...
Forum: Swarovski Friday 3rd April 2020, 13:13
Replies: 20
Views: 987
Posted By Binastro
Venus and the Pleiades. Tonight, Friday, Venus...

Venus and the Pleiades.

Tonight, Friday, Venus slowly transits the Pleiades star cluster.

Spotting scopes are ideal as the Pleiades are about 2 degrees across.

A darker sky will be better than...
Forum: Swarovski Thursday 2nd April 2020, 13:02
Replies: 20
Views: 987
Posted By Binastro
mbb, See my post #5. Venus doesn't show detail...

mbb,
See my post #5.

Venus doesn't show detail except to those with fine low contrast vision.
They usually use filters to enhance the faint markings.
I have never seen detail on Venus.
It is...
Forum: Spotting Scopes & tripod/heads Wednesday 1st April 2020, 12:27
Replies: 2
Views: 195
Posted By Binastro
Juhani, I can't answer exclusively, but firstly...

Juhani,
I can't answer exclusively, but firstly it depends on the amount of the errors.
No telescope is truly perfect although some are essentially perfect, but these are rare. I have only seen a...
Forum: Binoculars Tuesday 31st March 2020, 13:29
Replies: 22
Views: 668
Posted By Binastro
It says it took 2.5 minutes to assemble and 1.5...

It says it took 2.5 minutes to assemble and 1.5 minutes to disassemble or vice versa.
Some of the aircraft were launched by catapult and then recovered when it landed on the floats.
A biplane might...
Forum: Binoculars Monday 30th March 2020, 18:59
Replies: 22
Views: 668
Posted By Binastro
The registration number on the model Japanese...

The registration number on the model Japanese seaplane is something like the Greek letter Pi-836.
In very large letters on the top wing and small letters near the rudder. In black.
Plus large red...
Forum: Binoculars Monday 30th March 2020, 15:18
Replies: 22
Views: 668
Posted By Binastro
The aircraft modeller for the RAF museum left 700...

The aircraft modeller for the RAF museum left 700 completed high quality model aircraft.
His wife donated them to a local charity shop over the road from her house.

The staff and customers damaged...
Forum: Kowa Sunday 29th March 2020, 17:10
Replies: 15
Views: 655
Posted By Binastro
The magnifications used by birdwatchers with...

The magnifications used by birdwatchers with scopes is very low. 40x, maybe 60x.

The eyes are usually not looking for the finest detail in normal observations.

The bird may be moving, so fine...
Forum: Swarovski Friday 27th March 2020, 13:14
Replies: 20
Views: 987
Posted By Binastro
Any larger aperture gives incremental advantages...

Any larger aperture gives incremental advantages assuming similar quality.

Astro telescopes don't need erectors or prisms, so the quality can be better than spotting scopes.

Even a 150mm Dobsonian...
Forum: Binoculars Friday 27th March 2020, 13:04
Replies: 22
Views: 668
Posted By Binastro
I wonder if these are genuine, as 7.1 degrees are...

I wonder if these are genuine, as 7.1 degrees are usually 7x50s.

There is one domed screw and one flat.

More photos would be interesting.

B.
Forum: Binoculars Friday 27th March 2020, 12:19
Replies: 22
Views: 668
Posted By Binastro
If it is Tokyo Optical company, then this was I...

If it is Tokyo Optical company, then this was I think connected to Topcon.

The Topcon cameras were considered equal to or better than Nikon in quality.
The U.S Navy? may have chosen the Super DM in...
Forum: Zeiss Tuesday 24th March 2020, 14:59
Replies: 4
Views: 668
Posted By Binastro
Asahi Pentax were very interested in coatings on...

Asahi Pentax were very interested in coatings on cemented surfaces of lenses and used them in their lenses and maybe their eyepieces. 1970s.

They also had an Aero-bright coating that was superior to...
Forum: Swarovski Monday 23rd March 2020, 15:50
Replies: 4
Views: 694
Posted By Binastro
In 2030? (: Regards, B.

In 2030? (:

Regards,
B.
Forum: Zeiss Monday 23rd March 2020, 15:42
Replies: 98
Views: 5,342
Posted By Binastro
Thank you Mark post #75. I am trying to leave...

Thank you Mark post #75.

I am trying to leave letters for 3 days and magazines in plastic wrappers longer before opening.

However, I am having to handle plastic milk bottles after a day or so.
I...
Forum: Zeiss Sunday 22nd March 2020, 14:23
Replies: 98
Views: 5,342
Posted By Binastro
I just went out to the rear garden, car...

I just went out to the rear garden, car park.
Lovely sunny day, but cold east wind.

080/15 knots 2/8 cloud 9C dewpoint -1C visibility~40km 1026hPa.

I didn't take my camera, which I normally do, as...
Forum: Zeiss Sunday 22nd March 2020, 13:32
Replies: 98
Views: 5,342
Posted By Binastro
Thank you John for the link to Lens Rentals. Most...

Thank you John for the link to Lens Rentals.
Most useful.

I mentioned earlier that I wouldn't share binoculars.

I leave letters on the floor for, generally 3 days, but sometimes less.
When the milk...
Forum: Zeiss Friday 20th March 2020, 10:05
Replies: 98
Views: 5,342
Posted By Binastro
Is the production of binoculars more risky than...

Is the production of binoculars more risky than say the manufacture of medical ventilators?

Regards,
B.
Forum: Zeiss Wednesday 18th March 2020, 20:37
Replies: 98
Views: 5,342
Posted By Binastro
Either is fine. B.

Either is fine.

B.
Forum: Zeiss Wednesday 18th March 2020, 19:59
Replies: 98
Views: 5,342
Posted By Binastro
Dennis, post #41. The address is. Victoria...

Dennis, post #41.

The address is.
Victoria Embankment, Westminster SW1A 2JL.

Come in your appropriate dark clothing and the tools of your trade (:

B.
Forum: Zeiss Wednesday 18th March 2020, 15:55
Replies: 98
Views: 5,342
Posted By Binastro
My main line of defence is just not to get...

My main line of defence is just not to get it.

But to stop panic buying, I suppose that those who want an 8x32 SF are limited to 4 units.

I remember rationing in the 1940s.
For some reason we had a...
Forum: Zeiss Wednesday 18th March 2020, 14:19
Replies: 98
Views: 5,342
Posted By Binastro
If I did buy an 8x32 SF, it is my policy to leave...

If I did buy an 8x32 SF, it is my policy to leave parcels outside for several hours or preferably 3 days.
I wonder whether it would still be there.

I would ask the vendor to put it in a bag marked...
Forum: Zeiss Monday 16th March 2020, 19:45
Replies: 86
Views: 2,082
Posted By Binastro
Ian, The wobbly jelly is probably because the...

Ian,

The wobbly jelly is probably because the window was open and warm air was rushing through the window gap.
It might actually be better with the window closed, at least if not at an angle to the...
Showing results 1 to 25 of 1000
 


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