Orion 2x54 ultra wide binoculars !?
- AntennaGuy
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Orion 2x54 ultra wide binoculars !?
Hi all. Has anybody tried these? And/or have you seen them offered under a different brand name?
https://www.telescope.com/Orion/Orion-2 ... 132268.uts
Note that the objectives are considerably larger than the Vixen or Kasai low-power ~2x ultra-wide binoculars.
Thanks!
Added: OK, I just saw these are pre-order, so not available yet... unless they are an Orion re-branding?
https://www.telescope.com/Orion/Orion-2 ... 132268.uts
Note that the objectives are considerably larger than the Vixen or Kasai low-power ~2x ultra-wide binoculars.
Thanks!
Added: OK, I just saw these are pre-order, so not available yet... unless they are an Orion re-branding?
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Re: Orion 2x54 ultra wide binoculars !?
I have a pair on pre-order, and I will give a full review when I get them. I am a Binos-freak, and I can see a lot of different ways to use them.
Devout bino lover and Lunaholic! Scopes - Celestron RASA 8, Orion 180mm Mak-Cass, 6"f8 dob, ST80. binos - Orion 7x50, Oberwerk 8x56 LW, Oberwerk 10x50 Deluxe, 15x70 Deluxe, Oberwerk 100mm ED Binocular telescope.
- Lady Fraktor
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Re: Orion 2x54 ultra wide binoculars !?
Vixen has sold a similar set for a few years now and there are other retailers that sell them as well.
One of our bino guys at AF had 2-3 different powered sets and enjoyed them.
He did post reviews of them there if you are feeling brave
One of our bino guys at AF had 2-3 different powered sets and enjoyed them.
He did post reviews of them there if you are feeling brave
Gabrielle
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EQ: TAL MT-1, Vixen SXP, SXP2, AXJ, AXD
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See Far Sticks: Elita 103/1575, AOM FLT 105/1000, Bresser 127/1200 BV, Nočný stopár 152/1200, Vyrobené doma 70/700, Stellarvue NHNG DX 80/552, TAL RS 100/1000, Vixen SD115s/885
EQ: TAL MT-1, Vixen SXP, SXP2, AXJ, AXD
Az/Alt: AYO Digi II, Stellarvue M2C, Argo Navis encoders on both
Tripods: Berlebach Planet (2), Uni 28 Astro, Report 372, TAL factory maple, Vixen ASG-CB90, Vixen AXD-TR102
Diagonals: Astro-Physics, Baader Amici, Baader Herschel, iStar Blue, Stellarvue DX, Tak prism, TAL, Vixen
Eyepieces: Antares to Zeiss (1011110)
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- kt4hx
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Re: Orion 2x54 ultra wide binoculars !?
Well they give a larger TFOV (36° vs 28°) and are less expensive ($150 vs $170) than the Kasai sold at Agena.
https://agenaastro.com/kasai-trading-wi ... -view.html
While you can see the Orion video presentation for them on their site, here is a link to it on youtube:
I think something like that would be quite interesting at our dark site for scanning along the Milky Way, as well as getting a nice overall presentation of the sky in the broader sense.
I don't know why, but this reminded me of about ten years ago when Orion was offering their "Monster Dobs" of 36, 40 and 50 inch models! That didn't seem to last too long, which is understandable given the prices! Here is a glimpse courtesy of the Wayback Machine:
http://web.archive.org/web/201002120604 ... telescopes
https://agenaastro.com/kasai-trading-wi ... -view.html
While you can see the Orion video presentation for them on their site, here is a link to it on youtube:
I think something like that would be quite interesting at our dark site for scanning along the Milky Way, as well as getting a nice overall presentation of the sky in the broader sense.
I don't know why, but this reminded me of about ten years ago when Orion was offering their "Monster Dobs" of 36, 40 and 50 inch models! That didn't seem to last too long, which is understandable given the prices! Here is a glimpse courtesy of the Wayback Machine:
http://web.archive.org/web/201002120604 ... telescopes
Alan
Scopes: Astro Sky 17.5 f/4.5 Dob || Apertura AD12 f/5 Dob || Zhumell Z10 f/4.9 Dob ||
ES AR127 f/6.5 || ES ED80 f/6 || Apertura 6" f/5 Newtonian
Mounts: ES Twilight-II and Twilight-I
EPs: AT 82° 28mm UWA || TV Ethos 100° 21mm and 13mm || Vixen LVW 65° 22mm ||
ES 82° 18mm || Pentax XW 70° 10mm, 7mm and 5mm || barlows
Filters (2 inch): DGM NPB || Orion Ultra Block, O-III and Sky Glow || Baader HaB
Primary Field Atlases: Uranometria All-Sky Edition and Interstellarum Deep Sky Atlas
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"Astronomers, we look into the past to see our future." (me)
"Seeing is in some respect an art, which must be learnt." (William Herschel)
"What we know is a drop, what we don't know is an ocean." (Sir Isaac Newton)
"No good deed goes unpunished." (various)
“Some people without brains do an awful lot of talking, don't you think?” (Scarecrow, The Wonderful Wizard of Oz)
Scopes: Astro Sky 17.5 f/4.5 Dob || Apertura AD12 f/5 Dob || Zhumell Z10 f/4.9 Dob ||
ES AR127 f/6.5 || ES ED80 f/6 || Apertura 6" f/5 Newtonian
Mounts: ES Twilight-II and Twilight-I
EPs: AT 82° 28mm UWA || TV Ethos 100° 21mm and 13mm || Vixen LVW 65° 22mm ||
ES 82° 18mm || Pentax XW 70° 10mm, 7mm and 5mm || barlows
Filters (2 inch): DGM NPB || Orion Ultra Block, O-III and Sky Glow || Baader HaB
Primary Field Atlases: Uranometria All-Sky Edition and Interstellarum Deep Sky Atlas
---------------------------------------------------------------------------
"Astronomers, we look into the past to see our future." (me)
"Seeing is in some respect an art, which must be learnt." (William Herschel)
"What we know is a drop, what we don't know is an ocean." (Sir Isaac Newton)
"No good deed goes unpunished." (various)
“Some people without brains do an awful lot of talking, don't you think?” (Scarecrow, The Wonderful Wizard of Oz)
- stewe
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Re: Orion 2x54 ultra wide binoculars !?
Thanks for sharing, these binoculars seem very interesting. Looking forward to reading the review by Mandrew.
- stewe
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Re: Orion 2x54 ultra wide binoculars !?
Geez, 50-inchkt4hx wrote: ↑Wed Feb 19, 2020 8:27 pm I don't know why, but this reminded me of about ten years ago when Orion was offering their "Monster Dobs" of 36, 40 and 50 inch models! That didn't seem to last too long, which is understandable given the prices! Here is a glimpse courtesy of the Wayback Machine:
http://web.archive.org/web/201002120604 ... telescopes
They write:
"If your passion is the deep-sky and you want the biggest
Sure: bringing this grab-and-go scope to a star party should be a breeze..
- kt4hx
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Re: Orion 2x54 ultra wide binoculars !?
I cannot verify if any were ever sold. They were not mass produced, rather would be built as ordered. Certainly at the cost, they wouldn't stock them. Below is an image of the 36 inch model that was displayed at the April 2010 NEAF event I believe. However, from what I read, the original 36 inch mirror shattered during the vacuum coating process and that structure contains a 24 inch mirror. It was only a display model anyway. Orion contracted the noted Canadian mirror producer Normand Fullum to produce the mirrors for any orders and from what I've read a 50 inch model had been ordered by some organization, but I cannot verify that. By sometime in 2011 I believe they were no longer seen on the Orion website. I guess it was someone's "big" idea that fell flat. While looking through such a large scope would be quite an interesting thing to do, the cost is extremely prohibitive. I also wouldn't like the aspect of having to stand up on a tall ladder to observe. I am 6 ft tall and with my 17.5 inchstewe wrote: ↑Wed Feb 19, 2020 10:52 pmGeez, 50-inchkt4hx wrote: ↑Wed Feb 19, 2020 8:27 pm I don't know why, but this reminded me of about ten years ago when Orion was offering their "Monster Dobs" of 36, 40 and 50 inch models! That didn't seem to last too long, which is understandable given the prices! Here is a glimpse courtesy of the Wayback Machine:
http://web.archive.org/web/201002120604 ... telescopesDob , it's the first time I see this. Wondering if anyone bought one while they were on sale.
They write:
"If your passion is the deep-sky and you want the biggestDob at the star party, this Monster Dobsonian makes everything else look puny."
Sure: bringing this grab-and-go scope to a star party should be a breeze..
Alan
Scopes: Astro Sky 17.5 f/4.5 Dob || Apertura AD12 f/5 Dob || Zhumell Z10 f/4.9 Dob ||
ES AR127 f/6.5 || ES ED80 f/6 || Apertura 6" f/5 Newtonian
Mounts: ES Twilight-II and Twilight-I
EPs: AT 82° 28mm UWA || TV Ethos 100° 21mm and 13mm || Vixen LVW 65° 22mm ||
ES 82° 18mm || Pentax XW 70° 10mm, 7mm and 5mm || barlows
Filters (2 inch): DGM NPB || Orion Ultra Block, O-III and Sky Glow || Baader HaB
Primary Field Atlases: Uranometria All-Sky Edition and Interstellarum Deep Sky Atlas
---------------------------------------------------------------------------
"Astronomers, we look into the past to see our future." (me)
"Seeing is in some respect an art, which must be learnt." (William Herschel)
"What we know is a drop, what we don't know is an ocean." (Sir Isaac Newton)
"No good deed goes unpunished." (various)
“Some people without brains do an awful lot of talking, don't you think?” (Scarecrow, The Wonderful Wizard of Oz)
Scopes: Astro Sky 17.5 f/4.5 Dob || Apertura AD12 f/5 Dob || Zhumell Z10 f/4.9 Dob ||
ES AR127 f/6.5 || ES ED80 f/6 || Apertura 6" f/5 Newtonian
Mounts: ES Twilight-II and Twilight-I
EPs: AT 82° 28mm UWA || TV Ethos 100° 21mm and 13mm || Vixen LVW 65° 22mm ||
ES 82° 18mm || Pentax XW 70° 10mm, 7mm and 5mm || barlows
Filters (2 inch): DGM NPB || Orion Ultra Block, O-III and Sky Glow || Baader HaB
Primary Field Atlases: Uranometria All-Sky Edition and Interstellarum Deep Sky Atlas
---------------------------------------------------------------------------
"Astronomers, we look into the past to see our future." (me)
"Seeing is in some respect an art, which must be learnt." (William Herschel)
"What we know is a drop, what we don't know is an ocean." (Sir Isaac Newton)
"No good deed goes unpunished." (various)
“Some people without brains do an awful lot of talking, don't you think?” (Scarecrow, The Wonderful Wizard of Oz)
- DeanD
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Re: Orion 2x54 ultra wide binoculars !?
Back to the binos... Good try at highjacking the thread!
I have the Kasai versions, and I find them a bit of fun for scanning, and giving me a "darker-sky" experience from my urban sky. I am sure these Orions would do like-wise. However, the full field of view is only obtainable if you aren't wearing glasses: the closer you can get your eye to the eyepiece the better.
Given that the galilean-style optics produce an "exit pupil" that is effectively as wide or wider than theaperture of the eyepiece (in the case of the Kasai pair the eyepiece has an aperture of around 9mm), I am wondering what advantage a larger objective lens would provide? Whether they are 2.3x40 or 2x54 they still transmit way more light than your pupil can cope with (unless you are a whale or a giant squid...).
Can any optics experts out there enlighten me please?
- Dean
I have the Kasai versions, and I find them a bit of fun for scanning, and giving me a "darker-sky" experience from my urban sky. I am sure these Orions would do like-wise. However, the full field of view is only obtainable if you aren't wearing glasses: the closer you can get your eye to the eyepiece the better.
Given that the galilean-style optics produce an "exit pupil" that is effectively as wide or wider than the
Can any optics experts out there enlighten me please?
- Dean
Telescopes: 12" f5 dob, Celestron CPC800, 150mmf5 Celestron achro, Tak TSA102, TV76, ETX125...
Binos: Steiner Wildlife XP 10x26, Swarovski 8x30 Habicht, Zeiss SFL 8x40, Vanguard Endeavour 10.5x45, Fuji FMTR-SX 10x50, Tak 22x60, Orion Resolux 15x70
Eyepieces: way too many (is that possible?), but I do like my TV 32mm plossl, 13mm Nagler T6, 27mm Panoptic and 3-6mm Nagler zoom, plus Fujiyama 18mm and 25mm orthos and Tak 7.5mm LE
Binos: Steiner Wildlife XP 10x26, Swarovski 8x30 Habicht, Zeiss SFL 8x40, Vanguard Endeavour 10.5x45, Fuji FMTR-SX 10x50, Tak 22x60, Orion Resolux 15x70
Eyepieces: way too many (is that possible?), but I do like my TV 32mm plossl, 13mm Nagler T6, 27mm Panoptic and 3-6mm Nagler zoom, plus Fujiyama 18mm and 25mm orthos and Tak 7.5mm LE
- stewe
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Re: Orion 2x54 ultra wide binoculars !?
I think the answer to your question is that larger objective lens diameter provides a larger true field of view.DeanD wrote: ↑Thu Feb 20, 2020 1:44 am I am wondering what advantage a larger objective lens would provide? Whether they are 2.3x40 or 2x54 they still transmit way more light than your pupil can cope with (unless you are a whale or a giant squid...).
Can any optics experts out there enlighten me please?
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Re: Orion 2x54 ultra wide binoculars !?
I've got a similar set, Kasai Trading 2.3x40 Wide Field Binoculars with 28° True Field of View. They're interesting to play with but admittedly my time with them has been relatively limited. I found that light pollution and sky transparency/seeing conditions makes a big difference with them (I live within city limits underAntennaGuy wrote: ↑Sun Feb 16, 2020 12:25 am Hi all. Has anybody tried these? And/or have you seen them offered under a different brand name?
https://www.telescope.com/Orion/Orion-2 ... 132268.uts
Note that the objectives are considerably larger than the Vixen or Kasai low-power ~2x ultra-wide binoculars.
Thanks!
Added: OK, I just saw these are pre-order, so not available yet... unless they are an Orion re-branding?
SKYWARE: "BANNEKER" (Orion XT8 Classic w/ 9x50 RACI), "SOJOURNER" (Celestron NexStar 90 GT), "HARRIET" (Celestron Travel Scope 70), "THE NIKES" (Nikon WP 10x50 ATB), "SPOTTER" (8x56 Celestron Skymaster DX), "HAWK" (9x60 Oberwerk LW) and "GOGGLES" (2.3x42 Kasai Wide Field). EPs: (1.25") Plossl 6mm, 8 to 24 Zoom, 25mm, 32mm, 2X Barlow, 3X Barlow. SOFTWARE: Android (Camera FV-5, Daff Moon, Sky Map, SkyPortal, Heavens Above), Linux (Cartes du Ciel, Stellarium, BOINC SETI), Windows (Celestia, Starry Night 7, TheSkyX, TUBA, Adobe CS5)
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Re: Orion 2x54 ultra wide binoculars !?
Thanks Stewe. I note that they are 2x as opposed to the Kasai's 2.3x. This would provide a larger TFOV too (and in a similar amount that the larger objectives would seem to provide): so is it the magnification or the objective size that does this? Or maybe it is easier/cheaper to manufacture the larger objective to give a sharper image at the edge than the smaller one for the same magnification?stewe wrote: ↑Thu Feb 20, 2020 10:38 amI think the answer to your question is that larger objective lens diameter provides a larger true field of view.DeanD wrote: ↑Thu Feb 20, 2020 1:44 am I am wondering what advantage a larger objective lens would provide? Whether they are 2.3x40 or 2x54 they still transmit way more light than your pupil can cope with (unless you are a whale or a giant squid...).
Can any optics experts out there enlighten me please?
- Dean
Telescopes: 12" f5 dob, Celestron CPC800, 150mmf5 Celestron achro, Tak TSA102, TV76, ETX125...
Binos: Steiner Wildlife XP 10x26, Swarovski 8x30 Habicht, Zeiss SFL 8x40, Vanguard Endeavour 10.5x45, Fuji FMTR-SX 10x50, Tak 22x60, Orion Resolux 15x70
Eyepieces: way too many (is that possible?), but I do like my TV 32mm plossl, 13mm Nagler T6, 27mm Panoptic and 3-6mm Nagler zoom, plus Fujiyama 18mm and 25mm orthos and Tak 7.5mm LE
Binos: Steiner Wildlife XP 10x26, Swarovski 8x30 Habicht, Zeiss SFL 8x40, Vanguard Endeavour 10.5x45, Fuji FMTR-SX 10x50, Tak 22x60, Orion Resolux 15x70
Eyepieces: way too many (is that possible?), but I do like my TV 32mm plossl, 13mm Nagler T6, 27mm Panoptic and 3-6mm Nagler zoom, plus Fujiyama 18mm and 25mm orthos and Tak 7.5mm LE
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Re: Orion 2x54 ultra wide binoculars !?
With a larger front lens an opera glass can give a wider view, but to see it in its entirety your own pupil has to be uncomfortably close to the eye lens:
I have a small 4x22 pair of binoculars with positive eye lenses which actually have exit pupils. They may only show a 17° view, but they do so much more ergonomically than the negative eye lenses of opera glasses: They cost around €25 and aren't bad at all. Eye relief is some 15mm and the exit pupil is 5.5mm. Kasai and many other brands have them. They are sharp on-axis and the sweet spot is about 50% of the view. The outer 10% of the field is a mess, but with 68ºafov this is not much of a problem (for me). Closest focus is about 2.5m.
They look like this: Mind that these aren't suited for people with widely spaced eyes. Ideal for children though, whose heads are often too small for other binoculars.
Eye relief is zero and there is no exit pupil.I have a small 4x22 pair of binoculars with positive eye lenses which actually have exit pupils. They may only show a 17° view, but they do so much more ergonomically than the negative eye lenses of opera glasses: They cost around €25 and aren't bad at all. Eye relief is some 15mm and the exit pupil is 5.5mm. Kasai and many other brands have them. They are sharp on-axis and the sweet spot is about 50% of the view. The outer 10% of the field is a mess, but with 68º
They look like this: Mind that these aren't suited for people with widely spaced eyes. Ideal for children though, whose heads are often too small for other binoculars.
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- stewe
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Re: Orion 2x54 ultra wide binoculars !?
Since these binoculars have a Galilean design, the TFOV cannot be computed in the same way as you would for a Keplerian refractor. Also, exit pupil and eye relief are undefined for Galilean telescopes. Parallel entering rays exit parallel, and the image is virtual at infinity. You can perhaps imagine these optics like looking through a hole: the larger the hole and/or the closer you bring your eye, the larger the field becomes. Or at least this is my perception, but it was long ago since I learned about this kind of optics so I would not be surprised it someone would eventually correct/refine what I wrote. I am not sure what Orion mean by 72 deg apparent field of view. At which eye distance? And what I am really wondering about is whether the images produced by these binoculars have tolerable distortions and how messy they are off axis, i.e., how much one can really take advantage of the huge field of view.DeanD wrote: ↑Fri Feb 21, 2020 12:41 amThanks Stewe. I note that they are 2x as opposed to the Kasai's 2.3x. This would provide a larger TFOV too (and in a similar amount that the larger objectives would seem to provide): so is it the magnification or the objective size that does this? Or maybe it is easier/cheaper to manufacture the larger objective to give a sharper image at the edge than the smaller one for the same magnification?stewe wrote: ↑Thu Feb 20, 2020 10:38 amI think the answer to your question is that larger objective lens diameter provides a larger true field of view.DeanD wrote: ↑Thu Feb 20, 2020 1:44 am I am wondering what advantage a larger objective lens would provide? Whether they are 2.3x40 or 2x54 they still transmit way more light than your pupil can cope with (unless you are a whale or a giant squid...).
Can any optics experts out there enlighten me please?
Could anyone who own the Kasai or a similar model enlighten us?
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Re: Orion 2x54 ultra wide binoculars !?
Well, I have a pretty confident guess where that 72 deg number comes from! It comes from (drum roll please) adding up the 36 deg for each eye. Yes, that's a silly thing to do. People do silly things, sometimes. Especially people who prepare advertising literature. No offense intended, truly, to those silly people (although I would understand if they choose to take offense anyway...). Physics ain't easy, after all.
Alternatively: 36 deg True
* Meade 323 refractor on a manual equatorial mount.
* Celestron C6 SCT on a Twilight 1 Alt-Az mount
Prof. Barnhardt to Klaatu in The Day the Earth Stood Still: "There are several thousand questions I'd like to ask you.”
* Celestron C6 SCT on a Twilight 1 Alt-Az mount
Prof. Barnhardt to Klaatu in The Day the Earth Stood Still: "There are several thousand questions I'd like to ask you.”
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Re: Orion 2x54 ultra wide binoculars !?
Aha.. At which eye relief? At which eye pupil diameter?AntennaGuy wrote: ↑Fri Feb 21, 2020 10:45 pmWell, I have a pretty confident guess where that 72 deg number comes from! It comes from (drum roll please) adding up the 36 deg for each eye. Yes, that's a silly thing to do. People do silly things, sometimes. Especially people who prepare advertising literature. No offense intended, truly, to those silly people (although I would understand if they choose to take offense anyway...). Physics ain't easy, after all.
Alternatively: 36 deg TrueFOV = 72 deg ApparentFOV , at 2X magnification. So... maybe they meant that!! Added: Yes, on second thought, I think they did mean that. Carry on, then.
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Re: Orion 2x54 ultra wide binoculars !?
With your eye as close as you can get it to the lens without actually forcing your eyelashes painfully backward, I suspect....
Not sure about how the pupil diameter will figure in, though. Let's see what folks with experience on similar binocs have to say.
* Meade 323 refractor on a manual equatorial mount.
* Celestron C6 SCT on a Twilight 1 Alt-Az mount
Prof. Barnhardt to Klaatu in The Day the Earth Stood Still: "There are several thousand questions I'd like to ask you.”
* Celestron C6 SCT on a Twilight 1 Alt-Az mount
Prof. Barnhardt to Klaatu in The Day the Earth Stood Still: "There are several thousand questions I'd like to ask you.”
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Re: Orion 2x54 ultra wide binoculars !?
Please note that in post #12 by Ruud the first two images posted are GIF's with a large size and will not auto play.
By clicking on the image it will open in a new window and animate.
This is a set forum function and we cannot change it, so please be sure to hover your mouse over a image to establish if it is a GIF or not, bit tedious but that's how the forum software works.
viewtopic.php?f=49&t=7253#p63778
By clicking on the image it will open in a new window and animate.
This is a set forum function and we cannot change it, so please be sure to hover your mouse over a image to establish if it is a GIF or not, bit tedious but that's how the forum software works.
viewtopic.php?f=49&t=7253#p63778
- DeanD
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Re: Orion 2x54 ultra wide binoculars !?
stewe wrote: ↑Fri Feb 21, 2020 10:15 pmSince these binoculars have a Galilean design, the TFOV cannot be computed in the same way as you would for a Keplerian refractor. Also, exit pupil and eye relief are undefined for Galilean telescopes. Parallel entering rays exit parallel, and the image is virtual at infinity. You can perhaps imagine these optics like looking through a hole: the larger the hole and/or the closer you bring your eye, the larger the field becomes. Or at least this is my perception, but it was long ago since I learned about this kind of optics so I would not be surprised it someone would eventually correct/refine what I wrote. I am not sure what Orion mean by 72 deg apparent field of view. At which eye distance? And what I am really wondering about is whether the images produced by these binoculars have tolerable distortions and how messy they are off axis, i.e., how much one can really take advantage of the huge field of view.DeanD wrote: ↑Fri Feb 21, 2020 12:41 amThanks Stewe. I note that they are 2x as opposed to the Kasai's 2.3x. This would provide a larger TFOV too (and in a similar amount that the larger objectives would seem to provide): so is it the magnification or the objective size that does this? Or maybe it is easier/cheaper to manufacture the larger objective to give a sharper image at the edge than the smaller one for the same magnification?
Could anyone who own the Kasai or a similar model enlighten us?
Looking through the Kasai's I can see from Rigel to Betelguese and a couple of degrees either side of them. This equates to a realistic TFOV of around 23-25 degrees. This is with my eyes almost touching the lens. As you get closer you can see more and the claimed figure of 28 degrees is probably pretty accurate if they are mashed right under your eye-brow ridges(!), but the edge of the field seems noticeably degraded: although if you move your eye around a bit (like when you are use a 100-degree eyepiece) things improve. I would estimate the "sweet spot" as around 75% of the
Kasai claim that with their latest model (I have the first version) they have improved the view "dramatically" (see: http://www.kasai-trading.jp/widebino28neoexe.html ), and they also claim that stars are sharp across the whole field. I am not sure that this is really true for any binoculars, although my Tak 22x60's come pretty close...
Another problem of course is that if like me you have astigmatism then you need to wear your glasses to see sharp stars: but then you have a considerably reduced, (but sharper!)
Bottom line is that they do give a huge
If you like sitting back in a "zero gravity" chair and simply scanning with binoculars they are a lot of fun.
- Dean
Telescopes: 12" f5 dob, Celestron CPC800, 150mmf5 Celestron achro, Tak TSA102, TV76, ETX125...
Binos: Steiner Wildlife XP 10x26, Swarovski 8x30 Habicht, Zeiss SFL 8x40, Vanguard Endeavour 10.5x45, Fuji FMTR-SX 10x50, Tak 22x60, Orion Resolux 15x70
Eyepieces: way too many (is that possible?), but I do like my TV 32mm plossl, 13mm Nagler T6, 27mm Panoptic and 3-6mm Nagler zoom, plus Fujiyama 18mm and 25mm orthos and Tak 7.5mm LE
Binos: Steiner Wildlife XP 10x26, Swarovski 8x30 Habicht, Zeiss SFL 8x40, Vanguard Endeavour 10.5x45, Fuji FMTR-SX 10x50, Tak 22x60, Orion Resolux 15x70
Eyepieces: way too many (is that possible?), but I do like my TV 32mm plossl, 13mm Nagler T6, 27mm Panoptic and 3-6mm Nagler zoom, plus Fujiyama 18mm and 25mm orthos and Tak 7.5mm LE
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Re: Orion 2x54 ultra wide binoculars !?
Update: I was notified by Orion that they would get these in around the end of March. I am pretty sure that the hold up is because of coronavirus delays.
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Re: Orion 2x54 ultra wide binoculars !?
I own the 2,3 X 40 Kasai.
It is like Stewe and DeanD say in their posts.
Others told the truth about it too, they are Galilean bino's ( Holland type) and exit pupils are not calculated the same way as we are used to. The field of view depends of how close you can get with your eyes. Like already said above you can consider it as looking through a wide tube; the shorter the tube the wider the field looks. The edge is not the edge of your eyepieces' fieldlens, but the one of the objective.
One important point is that you can't look sideways in it, like we are used to in normal bino's. If you do so you will be punished with unsharp stars, colors and unpleasant collimation. You have to look straight forward in it. So you have to turn your head with the bino pressed to the eyes. Bit uneasy but you'll get used to it.
I use it for finding individual star-hopping stars in whole constellations under myLP skies. Stars that I don't see with the naked eye. Under dark skies the sight of the Milky Way is awesome!
It is like Stewe and DeanD say in their posts.
Others told the truth about it too, they are Galilean bino's ( Holland type) and exit pupils are not calculated the same way as we are used to. The field of view depends of how close you can get with your eyes. Like already said above you can consider it as looking through a wide tube; the shorter the tube the wider the field looks. The edge is not the edge of your eyepieces' fieldlens, but the one of the objective.
One important point is that you can't look sideways in it, like we are used to in normal bino's. If you do so you will be punished with unsharp stars, colors and unpleasant collimation. You have to look straight forward in it. So you have to turn your head with the bino pressed to the eyes. Bit uneasy but you'll get used to it.
I use it for finding individual star-hopping stars in whole constellations under my
Refractors in frequency of use : *SW Evostar 120ED F/7.5 (all round ), * Vixen 102ED F/9 (vintage), both on Vixen GPDX.
GrabnGo on Alt/AZ : *SW Startravel 102 F/5 refractor( widefield, Sun, push-to), *OMC140 Maksutov F/14.3 ( planets).
Most used Eyepieces: *Panoptic 24, *Morpheus 14, *Leica ASPH zoom, *Zeiss barlow, *Pentax XO5.
Commonly used bino's : *Jena 10X50 , * Canon 10X30 IS, *Swarovski Habicht 7X42, * Celestron 15X70, *Kasai 2.3X40
Rijswijk Public Observatory: * Astro-Physics Starfire 130 f/8, * 6 inch Newton, * C9.25, * Meade 14 inch LX600 ACF, *Lunt.
Amateur astronomer since 1970.
GrabnGo on Alt/AZ : *SW Startravel 102 F/5 refractor( widefield, Sun, push-to), *OMC140 Maksutov F/14.3 ( planets).
Most used Eyepieces: *Panoptic 24, *Morpheus 14, *Leica ASPH zoom, *Zeiss barlow, *Pentax XO5.
Commonly used bino's : *Jena 10X50 , * Canon 10X30 IS, *Swarovski Habicht 7X42, * Celestron 15X70, *Kasai 2.3X40
Rijswijk Public Observatory: * Astro-Physics Starfire 130 f/8, * 6 inch Newton, * C9.25, * Meade 14 inch LX600 ACF, *Lunt.
Amateur astronomer since 1970.
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