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Equipment Discussions >> Eyepieces

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Jim7728
Postmaster
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Reged: 04/10/05

Loc: Stoop Landing Observatory, NYC
Explore Scientific 3" 30mm Prototype announced!
      #5567554 - 12/12/12 01:06 PM

Explore Scientific 3" 30mm Prototype

That is just sick...


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csa/montana
Den Mama
*****

Reged: 05/14/05

Loc: montana
Re: Explore Scientific 3" 30mm Prototype announced! new [Re: Jim7728]
      #5567586 - 12/12/12 01:30 PM

Sooo, have you pre-ordered it?

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hottr6
Carpal Tunnel
*****

Reged: 06/28/09

Loc: 7,500', Magdalena Mtns, NM
Re: Explore Scientific 3" 30mm Prototype announced! new [Re: Jim7728]
      #5567587 - 12/12/12 01:30 PM

The announcement states that the matching diagonal will be threaded for 2" filters.... doesn't this mean that the 3" EP will be vignetted?

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Jim7728
Postmaster
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Reged: 04/10/05

Loc: Stoop Landing Observatory, NYC
Re: Explore Scientific 3" 30mm Prototype announced! new [Re: csa/montana]
      #5567609 - 12/12/12 01:41 PM

Quote:

Sooo, have you pre-ordered it?




Yeeaaahhh...though I should talk after buying a 21mm Ethos
and still saying to myself: "what have I done, what have I done..."


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astro_baby
scholastic sledgehammer


Reged: 06/17/08

Loc: United Kingdom
Re: Explore Scientific 3" 30mm Prototype announced! new [Re: Jim7728]
      #5567694 - 12/12/12 02:20 PM

Wowsa.....

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star drop
contra contrail
*****

Reged: 02/02/08

Loc: Snow Plop, WNY
Re: Explore Scientific 3" 30mm Prototype announced! new [Re: astro_baby]
      #5567704 - 12/12/12 02:22 PM

It should come with a helium purged balloon to offset its weight.

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frebieAdministrator
Chief assistant to the assistant chief


Reged: 04/29/08

Loc: Neither here nor there.
Re: Explore Scientific 3" 30mm Prototype announced! new [Re: hottr6]
      #5567715 - 12/12/12 02:25 PM

Quote:

The announcement states that the matching diagonal will be threaded for 2" filters.... doesn't this mean that the 3" EP will be vignetted?




Scott did some prototype testing in the ES 80mm apo (480mm focal length) with the prototype 2" to 3" diagonal and did not see any vignetting of the 6.25 degree field of view.


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Scanning4Comets
Markus
*****

Reged: 12/26/04

Loc: Ontario, Canada
Re: Explore Scientific 3" 30mm Prototype announced! new [Re: frebie]
      #5567835 - 12/12/12 03:30 PM

@ 7.5 LBs, nooooooooooooo thanks!

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stevetaylor199
sage
*****

Reged: 09/21/11

Loc: SE Wisconsin
Re: Explore Scientific 3" 30mm Prototype announced! new [Re: star drop]
      #5567862 - 12/12/12 03:48 PM

Quote:

It should come with a helium purged balloon to offset its weight.




And here I was going to suggest that for $1200, the eyepiece should be purged with something more exotic than plain old argon, like krypton.

Silly me -- krypton's too heavy!

Now, neon, on the other hand....


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bherv
Carpal Tunnel
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Reged: 03/10/06

Loc: WMass
Re: Explore Scientific 3" 30mm Prototype announced! new [Re: stevetaylor199]
      #5567997 - 12/12/12 05:33 PM

We will need 3" focusers for our reflectors, and lots of counterweight.
Barry


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stratocaster
sage
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Reged: 10/27/11

Re: Explore Scientific 3" 30mm Prototype announced! new [Re: bherv]
      #5568028 - 12/12/12 06:00 PM

I was wondering what the target market would be for such a beast.

The only thing that makes sense to me would be for large dobs or SCTs with long focal lengths, as it would be a way to increase the tfov for these scopes. Even so, say for a 2000mm f/l scope the increase in tfov is only .25 degrees over a 30mm 82 degree eyepiece - for around three times the weight of a 30mm 82 and the additional weight of a special diagonal.

And I suspect coma would be problem in the dob. So maybe SCTs are really the only market.

I'm thinking FC would be way too apparent for use in a refractor. Could be wrong, though.

I guess I don't get it.


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Achernar
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Reged: 02/25/06

Loc: Mobile, Alabama, USA
Re: Explore Scientific 3" 30mm Prototype announced! new [Re: Jim7728]
      #5568338 - 12/12/12 09:41 PM

Wow, drop that eyepiece on your foot, and YOU will be going to the emergency room I can't imagine this eyepiece being used on most telescopes simply because of the weight. However, I could see universities and professional observatories buying them for public outreach events.

Taras


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Gord
Carpal Tunnel
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Reged: 01/06/04

Loc: Toronto, ON, Canada
Re: Explore Scientific 3" 30mm Prototype announced! new [Re: stratocaster]
      #5568346 - 12/12/12 09:44 PM

I can see use in long FL refractors. Would be nice in a 6" f15 or 8" f12/15. The big cats as well. I'm wondering if we could see some 82 or 68 deg options in long focal lengths? But again, really for the big cat/refractor crowd.

Clear skies,


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johnnyha
Postmaster
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Reged: 11/12/06

Loc: Sherman Oaks, CA
Re: Explore Scientific 3" 30mm Prototype announced! new [Re: hottr6]
      #5568349 - 12/12/12 09:46 PM

Quote:

The announcement states that the matching diagonal will be threaded for 2" filters.... doesn't this mean that the 3" EP will be vignetted?



To me too, this seems to negate the whole thing. Why not make 3" filters? Or why even the need to go beyond 2" if the 2" filter somehow magically works with the 3" eyepiece?


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Dr Morbius
Post Laureate
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Reged: 02/06/07

Loc: ManorvilleNY-but not for long
Re: Explore Scientific 3" 30mm Prototype announced! new [Re: johnnyha]
      #5568438 - 12/12/12 11:10 PM

Great Caeser's Ghost - that is huge!

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jrbarnett
Eyepiece Hooligan
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Reged: 02/28/06

Loc: Petaluma, CA
Re: Explore Scientific 3" 30mm Prototype announced! new [Re: Jim7728]
      #5568442 - 12/12/12 11:13 PM

Yeah, it'll be here right after the 5.5mm and 25mm 100s.

I'm officially announcing a new, hand-ground 4" 140-degree 37mm eyepiece. Pricing will be $5000 per unit. It will be purged with Californium gas and have 18 elements.

Coming soon...



- Jim


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JayinUT
I'm not Sleepy
*****

Reged: 09/19/08

Loc: Utah
Re: Explore Scientific 3" 30mm Prototype announced! new [Re: jrbarnett]
      #5568551 - 12/13/12 01:08 AM

Just think, if you put attachments on them you could use them as barbells in the field during the day to work out with. I'll envy on these. Too rich for me.

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Chucky
sage
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Reged: 04/16/10

Loc: Dublin, Ohio
Re: Explore Scientific 3" 30mm Prototype announced! new [Re: JayinUT]
      #5568743 - 12/13/12 07:10 AM

Every company needs a product that gets talked about big time to increase company visibility and awareness. All the talk and discussion helps generate sales to other lines. Smart marketing.

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faackanders2
Carpal Tunnel


Reged: 03/28/11

Re: Explore Scientific 3" 30mm Prototype announced! new [Re: jrbarnett]
      #5568914 - 12/13/12 10:04 AM

Quote:

Yeah, it'll be here right after the 5.5mm and 25mm 100s.

I'm officially announcing a new, hand-ground 4" 140-degree 37mm eyepiece. Pricing will be $5000 per unit. It will be purged with Californium gas and have 18 elements.

Coming soon...



- Jim




I believe that one would have to be filled with unobtainium.


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Dave Ittner
sage
*****

Reged: 05/29/12

Loc: SF Bay Area, California
Re: Explore Scientific 3" 30mm Prototype announced! new [Re: faackanders2]
      #5569000 - 12/13/12 10:49 AM

Quote:


I believe that one would have to be filled with unobtainium.




lol, good one. we'd only have to build a ship and travel to Pandora. no biggie.

http://james-camerons-avatar.wikia.com/wiki/Unobtanium


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