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AlienRatDog
Carpal Tunnel
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Reged: 07/15/05

Loc: Ann Arbor
Re: Explore Scientific 3" 30mm Prototype new [Re: JayinUT]
      #5596801 - 12/30/12 07:32 PM

I am interested in a 40mm eyepiece...would be nice to make an adapter for larger SCT visual backs (I have a 12" SCT, I believe the back is like 3" or something like that)...so special 3" diagonals with large SCT adapter (11,14" celestron scts and >10"Meade SCTs)...I would be all over that!

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rboeAdministrator

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Reged: 03/16/02

Loc: Phx, AZ
Re: Explore Scientific 3" 30mm Prototype new [Re: Astrojensen]
      #5597005 - 12/30/12 10:04 PM Attachment (113 downloads)

This should help....

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herrointment
Post Laureate
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Reged: 03/12/11

Loc: North of Hwy. 64
Re: Explore Scientific 3" 30mm Prototype new [Re: rboe]
      #5597243 - 12/31/12 12:38 AM

Ron, I looked at your photo and swore I heard wheels turning.

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faackanders2
Carpal Tunnel


Reged: 03/28/11

Re: Explore Scientific 3" 30mm Prototype new [Re: herrointment]
      #5621481 - 01/13/13 07:21 PM

Will ES be bringing this to NEAF or any of the shows?

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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 new [Re: faackanders2]
      #5622454 - 01/14/13 10:50 AM

I would certainly assume so, but you'd need to check directly with them to be sure.

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GeneT
Ely Kid
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Reged: 11/07/08

Loc: South Texas
Re: Explore Scientific 3" 30mm Prototype new [Re: frebie]
      #5659078 - 02/02/13 10:59 PM

For some, OK--for me, no thanks.

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Bart
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Reged: 05/28/06

Loc: Somewhere near Charlottesville...
Re: Explore Scientific 3" 30mm Prototype new [Re: GeneT]
      #5663325 - 02/05/13 10:44 AM

I think the point of ridiculous has been reached!

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DaveJ
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Reged: 01/07/05

Loc: NE Ohio
Re: Explore Scientific 3" 30mm Prototype new [Re: Bart]
      #5663337 - 02/05/13 10:50 AM

Quote:

I think the point of ridicules had been reached?




If you mean "ridiculous" I completely agree with you!


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Bart
Carpal Tunnel
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Reged: 05/28/06

Loc: Somewhere near Charlottesville...
Re: Explore Scientific 3" 30mm Prototype new [Re: DaveJ]
      #5664060 - 02/05/13 05:52 PM

Yes, and I see I made two other mistakes as well.

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Clif
member


Reged: 07/19/06

Loc: Perrineville New Jersey
Re: Explore Scientific 3" 30mm Prototype new [Re: JayinUT]
      #5667278 - 02/07/13 03:16 PM

I figured out by scaling the photograph (taking perspective into account) that the OD of the widest part of the eyepiece is 4.22 inches. Unless you have REALLY widely separated eyes, don't even think of buying two for a binocular.

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faackanders2
Carpal Tunnel


Reged: 03/28/11

Re: Explore Scientific 3" 30mm Prototype new [Re: Clif]
      #5673216 - 02/10/13 10:37 PM

Quote:

I figured out by scaling the photograph (taking perspective into account) that the OD of the widest part of the eyepiece is 4.22 inches. Unless you have REALLY widely separated eyes, don't even think of buying two for a binocular.




Most 2" eyepieces can not be used for binoviewing either.


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aa6ww
scholastic sledgehammer
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Reged: 10/23/11

Loc: Sacramento, Calif.
Re: Explore Scientific 3" 30mm Prototype new [Re: faackanders2]
      #5728964 - 03/12/13 08:52 PM

I think its awesome. Once all the bugs are worked out with adapting it to scopes, I'll get me a set. Good thing I paid off my house last year!!
I have a TOA with a 2.7" focuser, and an APM with with a 2.5" focuser, so at least that ones easy to upgrade, Better still, it should be awesome in my C11 and C14!!!
Bring um on with the big diagonal also!! a 40mm 100deg eyepiece would never stay on the shelfs, even with a $2k pricetag!!

...Ralph


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pbsastro
professor emeritus
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Reged: 03/21/07

Re: Explore Scientific 3" 30mm Prototype new [Re: aa6ww]
      #5738095 - 03/17/13 07:10 AM

Ralph, a 40-100 will not work in a C11 or C14, as they are limited to a 53-55mm illuminated field. The 30-100 has a 52mm field. A 40-100 will have a 70mm field. Even refractors with 1200+ focal length will start to show field curvature and other aberrations at the edge. You will have to go with 1600+ focal length.
If you want 40mm for the C14/C11, with the same 52mm field, that would be 40-75, but close to that we already have the XW40 and Pan41 with field of 46mm.
That said, the 30-100 will be awesome in the C14HD or C11HD.

Edited by pbsastro (03/17/13 07:12 AM)


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gatorengineer
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Reged: 02/28/05

Loc: Hellertown, PA
Re: Explore Scientific 3" 30mm Prototype [Re: faackanders2]
      #5758787 - 03/26/13 06:13 PM

I bino view Ethos 17's.... with a Siebert 2" binoviewer. The explore 9 120 is too big, as is a terminagler.

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larry7
member


Reged: 11/30/08

Re: Explore Scientific 3" 30mm Prototype new [Re: frebie]
      #5939229 - 06/25/13 07:23 AM

Scott, I am very interested in a 40mm 100 degree plus a 3 inch diagonal for a 2 inch focuser!!!!!! Larry

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pbsastro
professor emeritus
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Reged: 03/21/07

Re: Explore Scientific 3" 30mm Prototype new [Re: larry7]
      #5939261 - 06/25/13 08:03 AM

That is not possible. The 30-100 has a 52mm field stop. A 40-100 will have a 70mm field stop. A 2" focuser only provides 46mm, that is what is used by the XW40 and Pan41. It is not possible to get more than 70 deg from a 2" focuser on a 40m eyepiece.

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faackanders2
Carpal Tunnel


Reged: 03/28/11

Re: Explore Scientific 3" 30mm Prototype new [Re: larry7]
      #5940373 - 06/25/13 07:46 PM

Quote:

Scott, I am very interested in a 40mm 100 degree plus a 3 inch diagonal for a 2 inch focuser!!!!!! Larry




a 3" focuser would be required to take advantage of a 3" eyepiece. Jst like there is no advantage of using a 2" eyepiece in a 1.25" focuser . (unless you already have the eyepiece)


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Joe Ogiba
Postmaster
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Reged: 02/14/02

Loc: NJ USA
Re: Explore Scientific 3" 30mm Prototype new [Re: faackanders2]
      #5994717 - 07/28/13 01:05 PM

Hmmm, my CT152 has a 3" focuser so this ES 30mm 100deg AFOV eyepiece with 52.2mm field stop and 3" diagonal would give it a much wider FOV than my 40mm Pentax XW with 46.5mm field stop,31mm Axiom (42mm FS) or 21mm Ethos with only a 36.2mm field stop.

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Symui
super member


Reged: 03/29/08

Loc: 37.9,-121.9 - Northern Califor...
Re: Explore Scientific 3" 30mm Prototype new [Re: Joe Ogiba]
      #6066529 - 09/06/13 04:50 PM

Any availability updates on this eyepiece? The ES website is currently quoting - Summer 2013.

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Relativist
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Reged: 10/11/03

Loc: OC, CA, USA
Re: Explore Scientific 3" 30mm Prototype new [Re: Symui]
      #6067901 - 09/07/13 02:23 PM

Interested in this as well. Also, any news on other focal lengths? It would be nice to see a max FOV eyepiece at about 6.5mm eye relief. Maybe 20mm 120 degree FOV?

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