Telescope Reviews: Explore Scientific 3" 30mm Prototype announced!

· Get a Cloudy Nights T-Shirt

· Submit a Review / Article

Click here if you are having trouble logging into the forums

Privacy Policy | Please read our Terms of Service | Signup and Troubleshooting FAQ | Problems? PM a Red or a Green Gu… uh, User

You are not logged in. [Login]

Entrance · Main Index · Search · New user · Who's Online
FAQ · Calendar

Equipment Discussions >> Eyepieces

Pages: 1 | 2 | 3 | (show all)

Jim7728
Postmaster

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...

Post Extras:

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?

Post Extras:

hottr6
Pooh-Bah

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?

Post Extras:

Jim7728
Postmaster

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..."

Post Extras:

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.....

Post Extras:

star drop
Snowed In

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.

Post Extras:

frebie
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.

Post Extras:

Scanning4Comets
Markus

Reged: 12/26/04

Loc: Deep Space!

Re: Explore Scientific 3" 30mm Prototype announced! new

[Re: frebie]
#5567835 - 12/12/12 03:30 PM

@ 7.5 LBs, nooooooooooooo thanks!

Post Extras:

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....

Post Extras:

bherv
Pooh-Bah

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

Post Extras:

stratocaster
sage

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.

Post Extras:

Achernar
Postmaster

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

Post Extras:

Gord
Carpal Tunnel

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,

Post Extras:

johnnyha
Postmaster

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?

Post Extras:

Dr Morbius
Post Laureate

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!

Post Extras:

jrbarnett
Eyepiece Hooligan

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

Post Extras:

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.

Post Extras:

Chucky
sage

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.

Post Extras:

faackanders2
Pooh-Bah

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.

Post Extras:

Dave Ittner
sage

Reged: 05/29/12

Loc: SF Bay Area, California

Re: Explore Scientific 3" 30mm Prototype announced! new