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Search: Posts Made By: Binastro
Forum: Spotting Scopes & tripod/heads Today, 13:11
Replies: 1
Views: 132
Posted By Binastro
Hi DunninLA. I have used Maksutovs terrestrially...

Hi DunninLA.
I have used Maksutovs terrestrially for well over 40 years.
Particularly the Custom 150mm f/10 at 95x.
From one to five miles typically.

I have written about these scopes for years...
Forum: Swift Yesterday, 17:35
Replies: 27
Views: 17,389
Posted By Binastro
General Motor Company. Alpha to beta in Ursa...

General Motor Company.

Alpha to beta in Ursa Major is 5 degrees 22 minutes angular distance. The pointer stars to Polaris.

B.
Forum: Spotting Scopes & tripod/heads Yesterday, 17:27
Replies: 21
Views: 999
Posted By Binastro
Yes, it is important to know what detail one is...

Yes, it is important to know what detail one is looking for.

I can identify an Airbus A380 at up to 20 miles at most angles and by how it flies.
A Boeing 747 up to 15 miles.
This is without optical...
Forum: Leica Yesterday, 17:14
Replies: 47
Views: 3,091
Posted By Binastro
I use Baader Optical Wonder fluid, I think from...

I use Baader Optical Wonder fluid, I think from First Light Optics 11.50?
Follow the instructions given.

However, if I had a binocular with a water resisting coating I would ask an optical expert,...
Forum: Spotting Scopes & tripod/heads Yesterday, 12:01
Replies: 21
Views: 999
Posted By Binastro
Dd, This is an urban location, so the distances I...

Dd,
This is an urban location, so the distances I can see birds is limited by buildings unless they are high in the sky.
Herring gulls don't seem to fly that high, so I can't give a distance. Many...
Forum: Spotting Scopes & tripod/heads Tuesday 19th March 2019, 21:23
Replies: 21
Views: 999
Posted By Binastro
Dd, The water temperature and air temperature are...

Dd,
The water temperature and air temperature are a good match. Conditions good.
It may be that there were beach ground effects.

If one is high above the beach it might help, and cloudy conditions...
Forum: Spotting Scopes & tripod/heads Tuesday 19th March 2019, 17:18
Replies: 21
Views: 999
Posted By Binastro
Dd, It is good to see the weather described. It...

Dd,
It is good to see the weather described.
It may be better in the morning or evening with the sun behind the observer.

What were you looking at?

I doubt that the sun is overhead at this time of...
Forum: Binoculars Tuesday 19th March 2019, 16:38
Replies: 9
Views: 366
Posted By Binastro
If you change the dioptre setting, can you use it?

If you change the dioptre setting, can you use it?
Forum: Binoculars Tuesday 19th March 2019, 16:18
Replies: 72
Views: 2,150
Posted By Binastro
This morning 3a.m. Fox owns the street, looks...

This morning 3a.m.
Fox owns the street, looks good in binocular.
Street rubbish bin not emptied in three days, so full. Fox got several bags out, maybe some food as he was stretched out on the road....
Forum: Nikon Monday 18th March 2019, 22:35
Replies: 10
Views: 349
Posted By Binastro
Hi Dave, Are you really losing the field of view...

Hi Dave,
Are you really losing the field of view or just comparing circles.

The FOV of the M7 8x30 is advertised as 8.3 degrees, I think, and Nikon are usually accurate.

The bottom two stars of the...
Forum: Others Monday 18th March 2019, 16:46
Replies: 4
Views: 211
Posted By Binastro
Probably 7x35, single blue coated. Perhaps...

Probably 7x35, single blue coated. Perhaps 1960s.
This is a lot better than the extra wide angle Korean binoculars that were very shoddy around 1970s.
The binocular shown seems to be a regular Porro...
Forum: Others Sunday 17th March 2019, 16:46
Replies: 15
Views: 467
Posted By Binastro
Neil, you are more sane than many. Bob, I have...

Neil, you are more sane than many.

Bob, I have enough (:

B.
Forum: Zeiss Friday 15th March 2019, 16:30
Replies: 20
Views: 1,080
Posted By Binastro
That is good news. Enjoy using the binocular. B.

That is good news.
Enjoy using the binocular.

B.
Forum: Nikon Friday 15th March 2019, 12:44
Replies: 24
Views: 603
Posted By Binastro
I just looked at a box of ten now rare 24.5mm...

I just looked at a box of ten now rare 24.5mm eyepieces and a star diagonal.
24.5mm eyepieces fit all sorts of scopes that can't take larger eyepieces.
Such as the Pentax 500mm mirror scope with 45...
Forum: Nikon Friday 15th March 2019, 12:26
Replies: 24
Views: 603
Posted By Binastro
Thanks MandoBear. I suppose we could mount...

Thanks MandoBear.

I suppose we could mount binocular optics in lead, but not nowadays.
Is it so, that some water pipes are still lead?
Forum: Binoculars Friday 15th March 2019, 11:47
Replies: 8
Views: 316
Posted By Binastro
Hi zipjim and welcome. I am surprised the Ricoh...

Hi zipjim and welcome.

I am surprised the Ricoh is fully multicoated, but if it says so, I suppose it is.
Maybe late 1980s?

If it isn't too heavy for you, I would use it for birdwatching.
However,...
Forum: Nikon Friday 15th March 2019, 11:21
Replies: 24
Views: 603
Posted By Binastro
Re.Post 15. Fig. 1.3. This was common in the...

Re.Post 15.
Fig. 1.3.
This was common in the 1980s in Aero Ektar 7 inch f/2.5 lenses made 1940 to 1945.
The coded serial numbers give the date of manufacture.
In fact it was difficult to find a...
Forum: Nikon Thursday 14th March 2019, 17:33
Replies: 24
Views: 603
Posted By Binastro
Perhaps Nikon is the best bet. At least they can...

Perhaps Nikon is the best bet.
At least they can give the best possible advice.
They may be generous.

If the balsam/cement is failing then the cheapest way is a new objective.

If it is just on the...
Forum: Nikon Wednesday 13th March 2019, 17:40
Replies: 24
Views: 603
Posted By Binastro
If the moisture is in the binocular and then...

If the moisture is in the binocular and then sealed in a Peli case I would think this could increase the possibility of fungus.
What is the relative humidity in your room?

If the fungus is between...
Forum: Binoculars Wednesday 13th March 2019, 16:16
Replies: 12
Views: 602
Posted By Binastro
I had a 30x80 Japanese Porro, best of three. The...

I had a 30x80 Japanese Porro, best of three.
The eye relief was pitiful, and I don't use glasses with binoculars.

The Barska might be better, but maybe not.
The eye relief is given as 10mm, but I...
Forum: Zeiss Wednesday 13th March 2019, 16:02
Replies: 27
Views: 3,386
Posted By Binastro
If the binocular has coated lenses it won't be...

If the binocular has coated lenses it won't be from 1919, unless someone went to the trouble of doing this decades later.
Forum: Nikon Wednesday 13th March 2019, 15:44
Replies: 24
Views: 603
Posted By Binastro
Dear ukorim, This is the beginnings of fungus, I...

Dear ukorim,
This is the beginnings of fungus, I think, that is caused possibly by moisture getting past the edge of the objective.
Sometimes it seeps into the balsam that is between the two...
Forum: Leica Wednesday 13th March 2019, 15:24
Replies: 47
Views: 3,091
Posted By Binastro
Peaky-B If one is at all worried then I would not...

Peaky-B
If one is at all worried then I would not use anything without consulting the maker.

However, Minox might not know themselves as I think the firm has changed hands and maybe don't make any...
Forum: Binoculars Tuesday 12th March 2019, 18:07
Replies: 12
Views: 602
Posted By Binastro
Hi Peter, It is probably because few here have...

Hi Peter,
It is probably because few here have used such observation binoculars.

People appreciate the reviews and comments, even though they don't have personal experience with such...
Forum: Binoculars Sunday 10th March 2019, 15:50
Replies: 31
Views: 1,206
Posted By Binastro
Roy, LCE Exeter could get in from LCE Guildford...

Roy,
LCE Exeter could get in from LCE Guildford anything that you want to try and which they they don't actually have in stock.
Probably in a couple of days.
The train only takes just over an hour...
Showing results 1 to 25 of 1000
 


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