Binoculars for Astronomy - Presented by Ralph Bell
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- čas přidán 25. 08. 2024
- Introduced by Robert J Dalby and presented by Ralph Bell.
The previously unseen material used in this recent edit, as part of our 10th-anniversary celebrations, was shot with Ralph back in 2010 but for reasons we can't now remember, the project was shelved.
We now offer his presentation as originally intended and in the best possible quality.
Produced by DB Video Services for Astronomy and Nature TV
Lovely presentation and very articulate and soft delivery. Thank you very much and sorry for your loss.
A nice presentation and a nice tribute to your late friend. Sorry for your loss.
I liked Ralph so calm and easy to like and listen to ,such a loss to us all ,and missed by all ,a beautiful video and a fitting Goodbye for now my friend ,God Bless, till we meet again
This was nice to discover. That hair cut though - what was my dad thinking, his mind as per usual, was obviously totally fixed on astronomy!
@maryamakiling haha! Thanks. I was just visiting the channel again to listen to my dad. I miss him kinda thing but really glad that he bought a bit or rock to the stars :)
All any beginner needs to know about binoculars for astronomy in under 4 minutes, by Ralph Bell. Perfect!
Ralph was the Bob Ross of astronomy!
How time goes by, a good posthumous video
Thank you very much for the video. Ralph reminds me of a couple of good friends I've known, especially with his calm laid back delivery. It's great to see him here once more.
Happy to give the 1000th like 🙂 His manner of teaching was very relaxed and kind. Truly someone who wanted to share his love of astronomy.
It’s very encouraging for newcomers to hear that it doesn’t matter what kind of binoculars you have.
Great video, rip Ralph, you were fantastic 💯
Exactly what i needed. just bought my first pair after watching this video. Seems a lovely bloke, saddened to hear he is no longer with us.
What a lovely tribute to your friend. Sorry for your loss I suppose there is comfort in that even though he's passed, he continues to share his love and knowledge for his passion beyond the grave.
Been watching you for years, don't know how I missed this one. Like everybody else, very good and very touching.
Superb video. A great man. A huge loss to humanity and astronomy. RIP Ralph.
A good intro to binoculars. Nice to see Ralph 1 more time.
Just purchased a pair of Celeston Skymaster 15x70. I have a tripod ready to go. These will do until I buy an 8 inch dobsonian
so how has it been going since your purchase ? would you recommend them ? There's not much choice in the country i'm in and i thought about buying the same pair as yours. Are they also good when you want to watch some landscape during the day ?
Excellent info to encourage people to grab their binoculars…. My interest has been invigorated by this and other similar ‘binocular’ astronomy.
Much thanks and sorry to hear the guy who was in the video, has passed on 😢
Lovely tribute and video!
Beautifully presented in Ralph’s inimitable style. Thank you for sharing!
Very informative and a beautiful tribute to your friend.
Thanks for posting this. It's the first one I've watched but a a fitting tribute.
Precise, concise and perfect with a cool vibe! Thank you!
What a great video!
This is the best channel in CZcams.
Most informative video so far.
Thank you for uploading
When he shows the "specialist" Praktica binoculars at 4:51 and says that they give an "optimum exit pupil for the dark adapted eye", this refers to a size of 7mm. Given the objective lens diameter of 56mm and the magnification of 8x, dividing 56 by 8 gives 7, which is how to calculate the exit pupil diameter. Any binoculars where dividing the objective lens diameter by the magnification gives 7 will have the same exit pupil size. So binoculars with 50mm lenses and 7x magnification will have almost exactly the same 7mm exit pupil size. My binoculars have 63mm lenses and 9x magnification, also giving a 7mm exit pupil size.
If you weight train you can get up to 25x50 without a tripod. Anything beyond that is tripod only. Those who don't weight train will max out around 15x50 but will get tired.
In your opening sequence there is a brief shot of you holding a planisphere while standing in front of a huge planisphere. Can you tell me where you purchased the huge planisphere? I'd love to get one for the astronomy classes I teach.
Hi Greg, thanks for posting. The 'Land of the Giants' Planisphere was made by us with the help of a graphics company that did the printing. Not too difficult to do once we got the perspex blanks cut. KR RJD A&NTV
Nothing wrong with having a small pair :)
I found a New Old Stock of Winchester WL-1050WR for
Canadian $40 (US$32/£25) which came in its original
packaging including a Steel Box, A Nylon Pouch and all the straps.
I couldn't find any details of Winchester Binoculars online - I know that they are a now defunct Ammunition company from USA famous for their rifles and also made rifle scopes.
The box and the documentation state "Winchester is a
registered trademark of Olin Corporation. Winchester Optics are distributed in North America by Vanguard (USA) Inc.”
I know Vanguard makes some pretty decent mid range sub $250 binos.
What are your thoughts about this purchase of $40
Canadian?
Here are some specs:
Porro Prism (Ofcourse from the looks )
10x50
Eye relief: 11mm
Exit Pupil: 5mm
Angle of view: 6.7 degrees
Field of view: 351 feet at 1000 yards
Weight: 1.87 Ibs
Sir, plz.suggest me the best of best binoculars for stargazing and astronomical researches .Thanks !
20X80 is good choice. To see Saturn small oval shape (2 mm) 18X minimum in needed. 15X70 will be used to locate galaxy called Silver Sliver or others closer than 30 000 000 Light Years
👌💫
What about 12x42?
12 times magnification, 42mm diameter objective. 12x is a little high for hand holding as you'll notice a lot of hand shaking.
12×50 !!! 12×60 !!! OK. 🤓🥸
So in summary, the bigger the better, but don't discount the small ones. Sounds like sound dating advice as well!
do you agree that a quality pair of 10x50 is superior to a rubbish 20x80? thanks for the videos ralph RIP
10x50 no tripod needed which is nice. 20x80 is tripod only and I'd rather use my telescope at that point. I personally use 25x50 without a tripod but they are heavy and most can't hold steady. 15x50 is a good max for most people. Small women and kids will max at 10x50. As far as non tripod usage.
Just as astronomers beg you not to buy a department store telescope, I beg you not to buy a cheap pair of binoculars. Everyone in astronomy should go look through a $2000 pair of hunting bino's. They are so clear, images appear sharper than w your bare eye. Please don't spend less than $200 in a pair. I highly recommend a $1500 pair of 10x42 SCL from Swarovski. That's a lot of money, but you will have them your whole life, longer than you'll probably have your telescopes.
No offense but it doesn't make sense,
Is like saying don't buy a 10k car but a 500k one