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Equipment Discussions >> Eyepieces

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greju
Carpal Tunnel
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Reged: 10/13/05

Re: RKE 28mm on the way! What to expect vs. 27-36 new [Re: greju]
      #5243925 - 05/28/12 01:23 PM Attachment (42 downloads)

A little closer. All three are different lengths!

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greju
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Reged: 10/13/05

Re: RKE 28mm on the way! What to expect vs. 27-36 new [Re: greju]
      #5243931 - 05/28/12 01:28 PM

I am not going to get into the difference in the coatings. OK, I will. It is obvious. The newer one has much more pronounced coatings versus the vintage. That is if the vintage has any coatings at all? Old and new the same? I don't think so!

Edited by greju (05/28/12 01:36 PM)


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MattT
professor emeritus
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Reged: 04/20/06

Loc: SF Bay Area
Re: RKE 28mm on the way! What to expect vs. 27-36 new [Re: greju]
      #5243998 - 05/28/12 02:05 PM

Thanks for bumping this with the photos! Close comparison reveals that the 28mm RKE I bought used a year or two ago is akin to your 1979 vintage. It has a nice "patina" on the rubber too, which fits with the age. Not saying mine is any better than any other RKE, just cool to know.

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ibase
Vendor Affiliate
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Reged: 03/20/08

Loc: Manila, Philippines 121*E 14*N
Re: RKE 28mm on the way! What to expect vs. 27-36 new [Re: MattT]
      #5245055 - 05/29/12 02:16 AM

Greju nice pics and comparison. But I think what was being discussed several pages back was that of the "Edmund Scientific" version and the new "Edmund Optics" one - do you have this? Thanks.

Best,


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greju
Carpal Tunnel
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Reged: 10/13/05

Re: RKE 28mm on the way! What to expect vs. 27-36 new [Re: ibase]
      #5245551 - 05/29/12 12:26 PM

Quote:

Greju nice pics and comparison. But I think what was being discussed several pages back was that of the "Edmund Scientific" version and the new "Edmund Optics" one - do you have this? Thanks.

Best,




Maybe I should have been more clear in my last posts. I was mainly comparing a late 70's era 28mm. RKE and a recent purchase from SS. I threw the 1 1/8 to show it was different in size anyways to the other two even though this may have been mentioned before. I was hoping to show that even though both these eyepieces are called RKE 28mm. there are differences. I did not get suckered ( ) into buying the higher priced version and will leave that comparison to someone else, if anyone dares to.

Come to think of it maybe my recent posts really do not mean anything. Comparing a SS eyepiece to an original (?) is not a fair or even good comparison. It does show their differences, that's all.

Edited by greju (05/29/12 12:35 PM)


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Bob Clift
sage


Reged: 03/22/05

Re: RKE 28mm on the way! What to expect vs. 27-36 new [Re: greju]
      #5245599 - 05/29/12 12:54 PM

Ditto on the thanks for the bump, the forum just didn't feel right without an RKE thread on the top page

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ibase
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Reged: 03/20/08

Loc: Manila, Philippines 121*E 14*N
Re: RKE 28mm on the way! What to expect vs. 27-36 new [Re: Bob Clift]
      #5257576 - 06/06/12 06:20 AM

Earlier today, I was able to witness the rare Venus transit of 2012 (next one happens a hundred years henceforth, in 2117), and used my RKE 28mm on an Orion 127mm Mak (55x) to shoot this image of the transit:


Afocal transit shot (Venus was on the way out) w/RKE 28mm using a Kodak Easyshare digicam

The RKE28mm did not disappoint, very nice Venus transit to the eye. (More transit pics at my blog [6/6/12 post], click on URL at signature line below.)

Best,


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cheapersleeper
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Reged: 01/22/10

Loc: Sachse TX
Re: RKE 28mm on the way! What to expect vs. 27-36 new [Re: ibase]
      #5257580 - 06/06/12 06:24 AM

Hernando, did the "floating" image make it easier to get the shot with the point and shoot? I was having some trouble getting afocal shots in focus.

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ibase
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Reged: 03/20/08

Loc: Manila, Philippines 121*E 14*N
Re: RKE 28mm on the way! What to expect vs. 27-36 new [Re: cheapersleeper]
      #5257938 - 06/06/12 10:53 AM

It's actually a bit harder & quite tricky because of the long eye relief, the camera has to hoover a bit further away than with regular eyepieces, but just like eye placement, it's doable and eventually, one gets the hang of it.

Best,


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DonsDob
member
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Reged: 05/21/12

Loc: CT
Re: RKE 28mm on the way! What to expect vs. 27-36 new [Re: ibase]
      #5264660 - 06/10/12 12:21 PM

Back in stock at Surplus Shed for $35 + s&h. Ordered one earlier in the week; received yesterday. Have not had a chance to try it out yet but looks in very good condition - no rubber grip (as stated) but clean, no marks. Slight purple coating seen.

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MRNUTTY
Carpal Tunnel
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Reged: 11/22/11

Loc: Mendon, MA
Re: RKE 28mm on the way! What to expect vs. 27-36 new [Re: DonsDob]
      #5264714 - 06/10/12 01:09 PM

Mine pair had a considerable amount of foreign materials inbetween the lenses. I was considering just buying a new one to go with my other RKE's and keep the dirty pair for public bino's. Like others, out of the rest of the set the 28 is the most novel view. Few others even come close to it.

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Vondragonnoggin
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Reged: 02/21/10

Loc: Southern CA, USA
Re: RKE 28mm on the way! What to expect vs. 27-36 new [Re: greju]
      #5265924 - 06/11/12 09:13 AM

Quote:

I am not going to get into the difference in the coatings. OK, I will. It is obvious. The newer one has much more pronounced coatings versus the vintage. That is if the vintage has any coatings at all? Old and new the same? I don't think so!




You still don't have the comparison made claiming the same correct. The claim to being the same was for the Edmund Scientific Orange banded eyepiece (the one you received from Surplus Shed) and the Edmund Optics Orange banded you would be buying NEW from Edmund Optics Co.

So yes, those old and new ones are the same, but you old and old ones are not. You still don't have a new one. In your defense, I can see how you would be confused by that statement as there are no less than four versions of RKE being discussed here. I knew about only three - Edmund Scientific 1 1/8, Edmund Scientific Co. RKE (orange banding), and Edmund Optics RKE (orange banding). You appear to have the three older versions.



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Vondragonnoggin
Post Laureate
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Reged: 02/21/10

Loc: Southern CA, USA
Re: RKE 28mm on the way! What to expect vs. 27-36 new [Re: MRNUTTY]
      #5265932 - 06/11/12 09:17 AM

Quote:

Mine pair had a considerable amount of foreign materials inbetween the lenses. I was considering just buying a new one to go with my other RKE's and keep the dirty pair for public bino's. Like others, out of the rest of the set the 28 is the most novel view. Few others even come close to it.





These eyepieces are quite simple to put together again and there are several exploded view pictures of the lens assembly. You could take them apart and clean them. I have done this with mine and it was very easy.


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mmclure
professor emeritus
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Reged: 12/30/10

Loc: Sacramento, CA USA
Re: RKE 28mm on the way! What to expect vs. 27-36 new [Re: Vondragonnoggin]
      #5266365 - 06/11/12 01:52 PM

Quote:

I knew about only three - Edmund Scientific 1 1/8, Edmund Scientific Co. RKE (orange banding), and Edmund Optics RKE (orange banding).




Add #4 - Edmund Scientific RKE (no orange banding) which is what I have. The body looks like the 1 1/8 but it's definitely an RKE (and is labeled as such.)


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Ed Holland
Carpal Tunnel


Reged: 06/16/10

Loc: San Jose, CA and Oxford, UK
Re: RKE 28mm on the way! What to expect vs. 27-36 new [Re: mmclure]
      #5266378 - 06/11/12 02:00 PM

Had fun observing with my 28mm last night. M81 & M82 nicely presented together in the 5" achromat.

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Vondragonnoggin
Post Laureate
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Reged: 02/21/10

Loc: Southern CA, USA
Re: RKE 28mm on the way! What to expect vs. 27-36 new [Re: mmclure]
      #5266676 - 06/11/12 04:15 PM

Quote:

Quote:

I knew about only three - Edmund Scientific 1 1/8, Edmund Scientific Co. RKE (orange banding), and Edmund Optics RKE (orange banding).




Add #4 - Edmund Scientific RKE (no orange banding) which is what I have. The body looks like the 1 1/8 but it's definitely an RKE (and is labeled as such.)




That might make 5 discussed in this thread.



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ibase
Vendor Affiliate
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Reged: 03/20/08

Loc: Manila, Philippines 121*E 14*N
Re: RKE 28mm on the way! What to expect vs. 27-36 new [Re: Vondragonnoggin]
      #5267546 - 06/12/12 05:58 AM

Quote:

Quote:

Quote:

I knew about only three - Edmund Scientific 1 1/8, Edmund Scientific Co. RKE (orange banding), and Edmund Optics RKE (orange banding).




Add #4 - Edmund Scientific RKE (no orange banding) which is what I have. The body looks like the 1 1/8 but it's definitely an RKE (and is labeled as such.)




That might make 5 discussed in this thread.






Wondering whether Manuel's RKE28 without orange band is exactly the one being sold by Surplus Shed now?

Best,


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saemark30
Pooh-Bah


Reged: 02/21/12

Re: RKE 28mm on the way! What to expect vs. 27-36 new [Re: ibase]
      #5271614 - 06/14/12 05:03 PM

Has anyone tried the RKE 28mm with a Televue 5x barlow?
I wonder if that would make it a planetary eyepiece?


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mmclure
professor emeritus
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Reged: 12/30/10

Loc: Sacramento, CA USA
Re: RKE 28mm on the way! What to expect vs. 27-36 new [Re: ibase]
      #5271728 - 06/14/12 06:29 PM

Quote:

Wondering whether Manuel's RKE28 without orange band is exactly the one being sold by Surplus Shed now?




I believe the one sold by Surplus Shed is an orange band one without the orange band - there's a slot on the body where the orange band would go. Mine instead has a knurled surface where the band would be - it's obvious that it was never meant to have the band.


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ibase
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Reged: 03/20/08

Loc: Manila, Philippines 121*E 14*N
Re: RKE 28mm on the way! What to expect vs. 27-36 new [Re: mmclure]
      #5271948 - 06/14/12 09:18 PM

Yours is a special one then; any idea what year it hit the market?

Best,


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