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TRE-BOR
newbie


Reged: 01/24/13

Focal reducer for Celestron 4SE
      #5665907 - 02/06/13 07:40 PM Attachment (43 downloads)

Dear Readers

I made my first nebula picture but i am trying to fin a focal reducer for the Celestron 4SE and i cant really tell on the site if bin at if they will fit my scope can somebody help me on the way

Ty Very Much Robert


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barbarosa
scholastic sledgehammer


Reged: 04/11/10

Loc: "lamorinda", CA
Re: Focal reducer for Celestron 4SE new [Re: TRE-BOR]
      #5666375 - 02/07/13 01:40 AM

The 4 se, the c-90 and the Meade ETX all need an adapter to accept an SCT thread. AFAIK the ETX and 4 SE have the same threads so this Meade adapter should fit

Nice M42!


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WaterMasterAdministrator
Moat Keeper
*****

Reged: 02/17/10

Loc: Southeast Idaho, USA
Re: Focal reducer for Celestron 4SE new [Re: barbarosa]
      #5666891 - 02/07/13 11:18 AM

Hi Robert, welcome to Cloudy Nights!

That's a great pic for your first try!


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TRE-BOR
newbie


Reged: 01/24/13

Re: Focal reducer for Celestron 4SE new [Re: WaterMaster]
      #5667459 - 02/07/13 04:47 PM

Ty you guys for the information on the adapter and for the picture coment dont think it was just one picture before i got this one that night LOl

Greets Robert


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barbarosa
scholastic sledgehammer


Reged: 04/11/10

Loc: "lamorinda", CA
Re: Focal reducer for Celestron 4SE new [Re: TRE-BOR]
      #5678695 - 02/14/13 01:44 AM

I was sorry to read your message that the Meade adapter didn't fit. Baader makes an adapter that might do. AgenaAstro carries them.

This thread might explain the problem

Edited by barbarosa (02/14/13 02:47 AM)


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Tel
Postmaster
*****

Reged: 03/31/06

Loc: Wallingford England
Re: Focal reducer for Celestron 4SE new [Re: barbarosa]
      #5678794 - 02/14/13 05:38 AM Attachment (12 downloads)

Hi Robert,

Pehaps take a look at the "same subject" thread above by "ItsMeTony" ? Maybe it also helps ?

BTW. A very nice first attempt at M42 !

I hope you don't mind but I took a look at it for any still hidden detail and came up with this rendition from a little Photoshop tweaking. As you can see, there was indeed some unseen, useable data which I hope the attached demonstrates.

Best regards,
Tel


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Geo.
Carpal Tunnel
*****

Reged: 10/01/08

Loc: Upstate NY
Re: Focal reducer for Celestron 4SE new [Re: Tel]
      #5681217 - 02/15/13 11:27 AM

The rear port on the 4, 6, 8 and 9.25 SCTs is 2" 24TPI. The external accessory thread on the eyepiece holder for most of these scopes is 1.38" * 24TPI.

This is very close to the 1.375" * 24TPI thread on the ETX, but is very slightly larger. In most cases, accessories for each, will fit the other, provided they are slightly sloppy on the Meade fitting. T^he safest course is to find a Celestron LAR 1.38" * 24TPI to 2" 24TPI.


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