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Classic "Sweet Spot" eyepieces

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#1 mattyfatz

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Posted 25 March 2020 - 08:23 PM

What your favorite all around classic eyepiece. You know the one. That eyepiece that provides the sweet spot for you. The one you use in every scope you have....

 

for me its my Edmund RKE 28mm & my Criterion AR 18mm..

 

I have an Orion 20mm .965 that pretty sweet too...


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#2 Russell Smith

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Posted 25 March 2020 - 08:35 PM

Edmund scientific 1 1/8" prototype for the 28mm RKE I think.

Hands down. 

Thanks Terra


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#3 TOMDEY

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Posted 25 March 2020 - 09:14 PM

This one, my very first great views of the planets! And, most astounding, I had ground, polished, and figured the mirror myself, up in my parent's attic!    Tom

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Edited by TOMDEY, 25 March 2020 - 09:16 PM.

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#4 sdedalus83

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Posted 25 March 2020 - 09:49 PM

My RG 20mm WA is the low power eyepiece for all of my slow achromats. It also barlows really well, both with the barlow ahead of or after the diagonal so sometimes it's the only eyepiece I use.


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#5 John Rogers

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Posted 25 March 2020 - 10:00 PM

The Edmund Military surplus 32mm Erfle eyepiece.  It was a true classic used in their Satellite Telescope, Deluxe Finder and Optical Alignment Telescopes.  David Rank modified the design in the 1980s to produce the 2" 32mm RKE eyepiece.  It is always a pleasure to place this eyepiece in the focuser of any telescope I am using.  Here is a 1956 advertisement.  Jaeger's sold the same eyepiece in a slightly different barrel.

 

195611_Edmund_5160_Erfle.jpeg


Edited by John Rogers, 25 March 2020 - 10:00 PM.

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#6 droid

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Posted 26 March 2020 - 05:45 AM

I can't say Ive ever had that one great eye piece. Ive had usable eye pieces, but none I say were great, until last year.

 

I don't know if its considered a classic to most, but sure feels like it to me, at 34 years old.

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#7 macdonjh

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Posted 26 March 2020 - 07:50 AM

The closest I have to an eye piece meeting all the criteria is my Optiluxe 40mm.  I use it with all my slow scopes (I only have one fast scope).  It provides good views as long as the scope is f/10 or slower, it's fairly light and eye relief is manageable (I have more trouble with too long than too short).  As a bonus, I think the Optiluxe are some of the best looking eye pieces around, too.  I wish they were still making them.

 

Thank you to Suddarth Optics for repairing mine.  The center cemeted doublet failed.  But SO were able to separate, clean and recement the lenses.


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#8 G-Tower

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Posted 26 March 2020 - 08:43 AM

Impossible for me to pick one or two because the sweet spot varies by atmospherics conditions. The planetary sweet spot may be 10mm one night and with steady seeing may  be a 4mm Or. the next. For me the Meade RG Ortho's were my favorite. The 10.5, 7mm and the 4mm were my planetary favorites. For deep space the old TV wide angles or Meade smoothy Superwides and Ultrawides.


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#9 ccwemyss

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Posted 26 March 2020 - 09:17 AM

UO 16mm flat-top Koenig. Owned since new. The standard I use to compare everything else against. There are better eyepieces, but if something doesn't do at least as well, it's not worth keeping in the case. And it is good enough that it really winnows the field. The fl is in a sweet spot that lets it be compared to a wide range of other lengths. 

 

Chip W.


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#10 Defenderslideguitar

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Posted 26 March 2020 - 10:28 AM

hard to nail it down to one    but this is not  a   if you could only have one question  thank goodness

 

 Meade RG 7mm is a  favorite classic in a certain genre 

 

  have to admit a fondness for the classic Celestron  26mm Silvertop


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#11 G-Tower

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Posted 26 March 2020 - 10:56 AM

hard to nail it down to one    but this is not  a   if you could only have one question  thank goodness

 

 Meade RG 7mm is a  favorite classic in a certain genre 

 

  have to admit a fondness for the classic Celestron  26mm Silvertop

The 7mm was one of my favorites in the 10 f/8 Newt at 285x


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#12 steve t

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Posted 26 March 2020 - 11:01 AM

My Brandon 24mm (stopped down to 43 degrees), 16mm and 8mm have been my go to eyepieces for over 30 years. I've recently discovered  that they really shine in my new ATM 4" F/10 Newtonian with a spherical mirror. First time I can say "sharp to the edge."smile.gif

Steve T

 

Edit: Oops, if I had to choose only one it would be the 24mm.   


Edited by steve t, 26 March 2020 - 11:03 AM.

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#13 Second Time Around

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Posted 26 March 2020 - 11:05 AM

Baader 8-24mm zoom.
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#14 Don W

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Posted 26 March 2020 - 12:31 PM

Three come to mind. Probably my most used eyepiece in just about every telescope is my Type II 12mm Nagler.

 

Two that I use to check out scopes is my Meade 28mm RG Ortho, and Meade 20mm RG WA.


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#15 G-Tower

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Posted 26 March 2020 - 12:52 PM

Baader 8-24mm zoom.

Nice but not a classic



#16 Bonco2

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Posted 26 March 2020 - 04:15 PM

RG 7mm Meade

26.6mm Unmarked eyepiece that came with my early 70's Cave. It gives a "space portal" view like what people say about the RKE 28mm

 

Old Nagler 4.8mm

Old Meade 8.8mm wide angle

Unitron 7mm Sym .965

Bill


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#17 Bomber Bob

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Posted 26 March 2020 - 04:48 PM

for me its my Edmund RKE 28mm...

 

Yep.  Y'all can have at it with your $400 TV this & your Argon-impregnated Zodiac crystal that.  I'm very happy with my trusty Edmund "Space Walk" RKE 28mm and Meade RG 20mm Erfle.  Those are both 1.25" barrel.  In the 2" category, my University Optics 32mm Erfle gets used a lot.  And, in the .965" barrel, my spectros 25mm Kellner & 7.5mm Plossl are picture perfect -- make small scopes seem big.


Edited by Bomber Bob, 26 March 2020 - 04:49 PM.

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#18 Terra Nova

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Posted 26 March 2020 - 05:16 PM

Hard to say really. None of my Volcano tops have ever disappointed me with just about any scope. 

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#19 Jon Isaacs

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Posted 26 March 2020 - 06:09 PM

I think this thread presents a dilemma.  

 

The 13mm, 9mm and 4.8 mm Naglers were introduced 40 years ago. 

 

The Wide fields, all but the 15mm, 38 years ago, The 15mm and the rest of the type 1's, 36 years ago.  The Type 2, 34 years ago. 

 

The Paracorr and the 35mm, 27mm, 22mm and 15mm Panoptics were all introduced at least 26 years ago.  

 

I have the 4.8 mm Nagler and use it frequently, it's an excellent double star and planetary eyepiece.  I have the 32mm and 24mm Wide Fields.  I have the 35mm and 22mm Panoptis, they're part of my first string eyepiece collection.  The type 2's were part of my first string eyepieces until about 3 years ago. 

 

But I have a hard time thinking of them as classic eyepieces, they are really modern eyepieces and the eyepieces transformed the world of eyepieces,

 

Maybe 50 years from now, someone can look back at them as classics but even though that 4.8 mm Nagler is a 40 year old design, it just doesn't seem like a classic eyepiece to me.

 

Jon


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#20 Pete W

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Posted 26 March 2020 - 07:01 PM

Don’t have just one...Very scope-specific.

2.4 & 3” fracs- Meade RG 20mm WA

8” F/6 - UO zebra 16mm  Konig; best ep to see color in Orion neb

C5 - 12.5mm Celestron Ultima 

18” Obsession - 9 mm Nagler type 1; the galaxy hunting ep


Edited by Pete W, 26 March 2020 - 07:02 PM.


#21 Jeff B

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Posted 26 March 2020 - 07:59 PM

I have to say the Edmund 28mm RKE is at the top of the list for me too.  Still being made and still causing arguments 45 years later.

 

A less well known runner up for me is the good old Celestron 26mm Silver top Plossl.  Just a nice, comfortable, sharp eyepiece and works great with my Denk II viewers with OCS and three position power switch. 

 

Jeff


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#22 G-Tower

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Posted 26 March 2020 - 10:42 PM

Another one of my favorites was the 26.6mm Ortho Star



#23 Corcaroli78

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Posted 27 March 2020 - 07:19 AM

For me, i have the best memories when i started the hobby using a Meade Plossl 4000 LP 26 mm ( here besides a 13 mm Hyperion).

 

The 26 mm has a wonderful eye relief, recessed lens creating protection against light, a soft rubber eyeguard and a good performance for its price.

 

TL_10.jpg

 


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#24 Bomber Bob

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Posted 27 March 2020 - 10:52 AM

My simplified approach to managing eyepieces (yes, I retired from the Dept of Defense, why do you ask?):

 

Big 4 Case Set S01.jpg

 

One .965" case, 2 x 1.25" cases, and one 2" case.  Members get swapped out periodically, along with desiccant packs (at least 1 under each eyepiece / accessory) -- this is The Swamp, after all.  I used to try & carry everything in one huge case -- tore up a lot of foam that way!

 

BIF:  Don't know about y'all, but I was bad about boxing up eyepieces I acquired with test scopes, odd lots, etc. such that I never used them.  I had a big case, but even it had limited space.  With these 4 cases, I have more slots for more eyepieces.  My only boxed sets are a complete Criterion, Sears 6336 (AO / multi-colored), and some rare Swift EPs & accessories -- like the Zoom eyepiece.  Eyepieces seem to grow like weeds!  Even after giving away all my volcano-tops, and some .965" units, I still have too many...

 

Speaking of .965" EPs:  I got 2 Celestron / Vixens I need to test -- a black-capped / orange lettering 7.5mm Plossl, and a small but heavy traditional 4mm Orthoscopic (microscopic eye lens!).


Edited by Bomber Bob, 28 March 2020 - 10:41 AM.

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#25 grif 678

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Posted 27 March 2020 - 03:12 PM

I haveseveral classic ones that I am happy with

26mm silvertop, and the 10mm silvertop

Several volcano tops, they all are good, depends on the power you are desiring at the moment.




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