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Equipment Discussions >> Cats & Casses

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Konihlav
Pooh-Bah


Reged: 03/05/09

Re: Edge HD Focal Reducer new [Re: Jeff Smith]
      #4001298 - 08/23/10 01:14 PM

Jeff Smith:

could you please tell piece by piece how you mount the Optec Lepus reducer to the back end of the EdgeHD OTA? I mean start with Astro-Physics 3.25" adapter... ... how far is the Lepus from the back end? and the spacing from the reducer to focal plane is 100mm ??? isn't that too large?

many thanks and I feel sorry for the bad news above...


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Jeff Smith
professor emeritus


Reged: 04/06/10

Loc: Chicago
Re: Edge HD Focal Reducer new [Re: Konihlav]
      #4004079 - 08/24/10 09:02 PM

Yes, I had an Astrophysics visual back. It fits the large rear cell and has a triple thumbscrew 2" opening. Into that goes the focal reducer with the Canon adaptor attached. On the back of the Canon Adaptor is a Canon T ring that attaches to the Canon camera.
Scope->A.P. visual back->Optec focal reducer->Canon adaptor->T Ring->camera.
If you get the Optec setup you get the focal reducer, Canon Adaptor and T ring. It is all setup for optimum spacing.
The focal reducer will not work with a normal SCT visual back. It must go into a 2" thumbscrew focuser or visual back. Optec advised me to get the A.P. visual back and it was really nice.

Edited by Jeff Smith (08/24/10 09:03 PM)


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Konihlav
Pooh-Bah


Reged: 03/05/09

Re: Edge HD Focal Reducer new [Re: Jeff Smith]
      #4007835 - 08/26/10 03:55 PM

thank you Jeff. So I make it AP 3.25" adapter (I've got the one with 2.7" threads) then I can put the Optec FR and then I somehow make it to be 100mm from the focal plane.
thanks.


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Dave M
Postmaster
*****

Reged: 08/03/04

Loc: Ohio
Re: Edge HD Focal Reducer new [Re: Konihlav]
      #4196678 - 11/19/10 12:03 PM

I`m aware of the Optec Lepus reducer for the Edge HD scopes, But! whats the story/word on when Celestron will make their
reducer available ?


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ewave
Pooh-Bah
*****

Reged: 05/16/09

Loc: northwest NJ
Re: Edge HD Focal Reducer new [Re: Dave M]
      #4197342 - 11/19/10 05:59 PM

They now say early 2011 about a month ago

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Dave M
Postmaster
*****

Reged: 08/03/04

Loc: Ohio
Re: Edge HD Focal Reducer new [Re: ewave]
      #4198275 - 11/20/10 08:29 AM

Thanks! Sean

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PatHolland
Carpal Tunnel
*****

Reged: 10/11/09

Loc: Clever, Missouri
Re: Edge HD Focal Reducer new [Re: Dave M]
      #4198580 - 11/20/10 11:35 AM

I've got the Optec Lepus for the 10" LX200 ACF. Seems to work pretty good but since my main imaging chips are 26mm and 28.4mm I get coma on the edges. The Lepus illuminates a 22mm chip at F6.2. A bit of cropping takes care of that.

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Chris Fogarty
newbie


Reged: 12/07/10

Loc: Charlotte NC
Re: Edge HD Focal Reducer new [Re: Jeff Smith]
      #4294912 - 01/05/11 09:30 PM

Did you ever get Clarification?

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sfastroman
journeyman
*****

Reged: 10/31/09

Loc: San Francisco, CA
Re: Edge HD Focal Reducer new [Re: Dave M]
      #4330372 - 01/21/11 05:53 PM

I sent an email to Celestron tech support asking if there was an E.T.A on an Edge HD Focal reducer and also asked if they could tell me what the area of illumination would be. Here is the response that I got back on 01/19/2010:

-----------------------------------------------------
We don't have any tech specs on the reducer yet. Nor do we have a firm date on its release. Sorry.

Clear skies,
Celestron Technical Support
-----------------------------------------------------

It's not looking too good...

Glenn


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kohudson
sage


Reged: 01/21/09

Loc: Mayhill, NM
Re: Edge HD Focal Reducer new [Re: sfastroman]
      #4330497 - 01/21/11 06:55 PM

Well, either it's no priority at all or they are having "trouble" somewhere along the line...

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ewave
Pooh-Bah
*****

Reged: 05/16/09

Loc: northwest NJ
Re: Edge HD Focal Reducer new [Re: kohudson]
      #4330506 - 01/21/11 07:01 PM

awwwww....fishsticks

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houser23
sage


Reged: 10/26/09

Loc: Rocklin, CA
Re: Edge HD Focal Reducer new [Re: ewave]
      #4330677 - 01/21/11 08:40 PM

Why don't they just come out and say it. We just can't make a focal reducer for this telescope, it's impossible.

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starbob1
Pooh-Bah


Reged: 03/11/07

Loc: IN
Re: Edge HD Focal Reducer new [Re: houser23]
      #4330826 - 01/21/11 09:51 PM

LAWSUIT COMING SOON.

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dkb
sage


Reged: 07/23/08

Loc: Minnesota
Re: Edge HD Focal Reducer new [Re: starbob1]
      #4330873 - 01/21/11 10:23 PM

What would be the technical limitation for them not being able to manufacture one? Is there something I'm missing that makes this extremely difficult to produce?

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Dave M
Postmaster
*****

Reged: 08/03/04

Loc: Ohio
Re: Edge HD Focal Reducer new [Re: sfastroman]
      #4332531 - 01/22/11 04:54 PM

At least you got a reply from them ,i sent a e-mail asking the same thing a while back but never got a reply.
Ide like to buy the 9.25" HD OTA this summer if possible, but i`m not going to until their reducer is made available.


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Snickersnee
member
*****

Reged: 08/29/08

Loc: California
Re: Edge HD Focal Reducer new [Re: elwaine]
      #4402934 - 02/22/11 12:26 AM

Yep - FRs do cause central brightening. They emphasize the existing vignetting in the OS they are reducing.

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Cliff Halliwell
member


Reged: 04/03/09

Loc: Ottawa, Ontario, Canada
Re: Edge HD Focal Reducer new [Re: Snickersnee]
      #4404957 - 02/22/11 10:56 PM

A most interesting take on this comes from Celestron's video pitching the new CGEM DX mount. Towards the end they turn to extolling the Edge OTAs and their large, flat field. Except they illustrate it with a DSLR on a Hyperstar which, of course, has zip to do with the Edge optical design changes!
See: http://www.celestron.com/c3/product.php?CatID=16&ProdID=761 (click on the video tab).


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Patrick
Postmaster
*****

Reged: 05/16/03

Loc: Franklin, Ohio
Re: Edge HD Focal Reducer new [Re: Cliff Halliwell]
      #4405054 - 02/22/11 11:57 PM

Quote:

A most interesting take on this comes from Celestron's video pitching the new CGEM DX mount. Towards the end they turn to extolling the Edge OTAs and their large, flat field. Except they illustrate it with a DSLR on a Hyperstar which, of course, has zip to do with the Edge optical design changes!




Yes, that is odd.

Patrick


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bradisback
member


Reged: 01/05/10

Re: Edge HD Focal Reducer new [Re: Patrick]
      #4405282 - 02/23/11 04:38 AM

One thing that also surprises me is that the "edgeHD Availability" has not changed since November 2010.
They never speak of a focal reducer ...
The communication on this subject is deplorable!
Stef


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Nocturnal
Carpal Tunnel
*****

Reged: 09/14/05

Loc: CT, USA
Re: Edge HD Focal Reducer new [Re: bradisback]
      #4405538 - 02/23/11 09:01 AM

Hmm, I checked a few weeks ago and I saw several OTAs and packages in stock. I'd say supply has improved in general but perhaps not for the model you're looking for

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