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Affordable "Finder" EP

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#1 ksmokratur

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Posted 23 February 2018 - 02:02 AM

I am looking for an EP with a max true FOV at a reasonable price; it is expected to be mostly a slightly wider "finder" EP since I already have a 35 Pan that I enjoy.  A secondary use will be for a youngster to have a wide EP to play around with without risking destroying Daddy's $400 Panoptic.

 

Two "cheap" candidates I've found are the ES 40mm 68 and the Orion 38mm Q70.  I note Tele Vue offers a 55mm Plossl, and I have a lot of TV product, but I'm hoping to save a few dollars here if I can.  Thank you all for any advice.



#2 Shneor

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Posted 23 February 2018 - 02:15 AM

If I read you correctly, you are talking a 2" eyepiece. There are a number of Widescan II/III clones out there - 30mm with a 70* apparent field, usually around $50-70 used. A number of dealers carry them. Since you don't mention the telescope you intend the eyepiece for, I should warn you that depending on the telescope, you might notice moderate distortion toward the edge of the field.



#3 Redbetter

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Posted 23 February 2018 - 02:31 AM

What scope will it go into?   An f/10 is a whole different matter than f/5, and whether or not it is a reflector, SCT/MCT, or refractor is also relevant.

 

For long ratios the 56mm Meade Plossl would be the widest true field with a well corrected eyepiece at reasonable cost.  I don't believe the functionality will be as good as the 55 TV because the housing doesn't appear as well engineered for adjustable eye placement.  I haven't used one though so I don't know if that is true.


Edited by Redbetter, 23 February 2018 - 04:57 AM.

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#4 starbase25

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Posted 23 February 2018 - 04:03 AM

I am looking for an EP with a max true FOV at a reasonable price; it is expected to be mostly a slightly wider "finder" EP since I already have a 35 Pan that I enjoy.  A secondary use will be for a youngster to have a wide EP to play around with without risking destroying Daddy's $400 Panoptic.

 

Two "cheap" candidates I've found are the ES 40mm 68 and the Orion 38mm Q70.  I note Tele Vue offers a 55mm Plossl, and I have a lot of TV product, but I'm hoping to save a few dollars here if I can.  Thank you all for any advice.

If you want a bit more field than your 35mm Panoptic, the 40mm ES 68 fits the bill nicely. Mind you, it is a bit of a HEAVY beastie. 


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#5 izar187

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Posted 23 February 2018 - 05:48 AM

I am looking for an EP with a max true FOV at a reasonable price; it is expected to be mostly a slightly wider "finder" EP since I already have a 35 Pan that I enjoy.  A secondary use will be for a youngster to have a wide EP to play around with without risking destroying Daddy's $400 Panoptic.

 

Two "cheap" candidates I've found are the ES 40mm 68 and the Orion 38mm Q70.  I note Tele Vue offers a 55mm Plossl, and I have a lot of TV product, but I'm hoping to save a few dollars here if I can.  Thank you all for any advice.

http://www.russell-o...m/two_inch.html


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#6 Adun

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Posted 23 February 2018 - 05:49 AM

You mention the TV 55.

 

What about the Meade 56mm Super Plössl?



#7 russell23

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Posted 23 February 2018 - 06:31 AM

A lighter and less expensive option is the 40mm ES62.



#8 Jon Isaacs

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Posted 23 February 2018 - 07:10 AM

Two "cheap" candidates I've found are the ES 40mm 68 and the Orion 38mm Q70.  I note Tele Vue offers a 55mm Plossl, and I have a lot of TV product, but I'm hoping to save a few dollars here if I can.  Thank you all for any advice.

 

 

If you consider the ES 40mm 68 degree as "cheap", then I say go for it.  It's about as close to the 41mm Panoptic as you'll get.  I see that High Point has it listed for $248.  

 

https://www.highpoin...0hoC0awQAvD_BwE

 

Otherwise, as others have asked, what scope will this finder eyepiece be used with it?

 

Jon


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#9 junomike

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Posted 23 February 2018 - 07:29 AM

If used in a faster OTA than F7 I'd opt for the ES 40 68, however in an F8 OTA or SCT you can get away with the Orion 38mm Q70 or a 40mm SWAN.



#10 Jim Davis

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Posted 23 February 2018 - 08:39 AM

If used in a faster OTA than F7 I'd opt for the ES 40 68, however in an F8 OTA or SCT you can get away with the Orion 38mm Q70 or a 40mm SWAN.

I use the William Optics 40mm SWAN. Nice eyepiece for the price. Also much lighter than an ES 40mm.



#11 drneilmb

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Posted 23 February 2018 - 11:22 AM

If you wear both a belt and suspenders, then maybe you can carry the ES68 40mm in your pocket after you get a screaming deal on a refurbished one: https://www.ebay.com/itm/362224484712



#12 Jon Isaacs

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Posted 23 February 2018 - 11:44 AM

If you wear both a belt and suspenders, then maybe you can carry the ES68 40mm in your pocket after you get a screaming deal on a refurbished one: https://www.ebay.com/itm/362224484712

 

waytogo.gif

 

Scopehed1 is the EBay store for Bill Vorce who runs the Telescope-warehouse.  Bill's been around forever and he's now an authorized Explore Scientific dealer and handles their refurbished eyepieces.  

 

That is a screaming deal.

 

Jon


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#13 Sarkikos

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Posted 23 February 2018 - 01:40 PM

That's a great price.  I was thinking about snagging it if I didn't already have a 41 Pan, and especially if the ES were lighter.  But according to the specs I see, the ES is actually about the same weight, if not a couple ounces heavier.

 

Mike



#14 Jaimo!

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Posted 23 February 2018 - 02:29 PM

 

If you wear both a belt and suspenders, then maybe you can carry the ES68 40mm in your pocket after you get a screaming deal on a refurbished one: https://www.ebay.com/itm/362224484712

 

waytogo.gif

 

Scopehed1 is the EBay store for Bill Vorce who runs the Telescope-warehouse.  Bill's been around forever and he's now an authorized Explore Scientific dealer and handles their refurbished eyepieces.  

 

That is a screaming deal.

 

Jon

 

Not to go off course, but elaborate on Jon's advise...  I have recently picked up an refurbished 8.8mm Explore Scientific 82° from Bill at Telescope-warehouse.  I cannot tell any difference between the refurbished eyepiece and those I paid full price, except some of the serial numbers have been removed.

 

There has been a recent active thread on the refurbs.

 

He also offers the older style 30mm ES82 for $125...

 

Jaimo!


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#15 Sarkikos

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Posted 23 February 2018 - 02:44 PM

Great deals on ES ... if I didn't already have the equivalent TV.

 

Mike



#16 ksmokratur

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Posted 23 February 2018 - 09:44 PM

Thanks for the food for thought, everybody. I should have said "cheapER" now that I look back.  I don't currently have a 'scope faster than f/7 so it seems like any of these work.  I do really like those Pans and it sounds like the consensus, all weight being equal, is that the ES comes the closest.  I'm still open to more thoughts, though.



#17 Mark9473

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Posted 25 February 2018 - 11:51 AM

An f/7 focal ratio doesn't sound critical.

In my 80 mm f/7 apo, I absolutely love my TS 26mm Erfle eyepiece, which I believe is a clone of the Q70.

In a slower scope like my Mewlon, my favourite is the 35 mm Paragon that TS still sells new (I think Astronomics discontinued them).

 

You still haven't said which scope(s) so I think it's hard for most posters to give more specific advice.



#18 lylver

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Posted 25 February 2018 - 11:54 AM

As I just bought it : Ostara 38mm 70° : it is an erfle II similar to any 70° 2-1-2 modern EP (500g)



#19 Mark9473

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Posted 25 February 2018 - 01:09 PM

That looks like another Q70 clone.



#20 gezak22

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Posted 25 February 2018 - 03:55 PM

I was pretty happy with my 40mm tmb paragon.


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#21 CollinofAlabama

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Posted 01 March 2018 - 01:00 PM

I really like my ES 28mm 68* eyepiece.  This one is great, but at greater than F/7, you can certainly get a longer F/L eyepiece.  For me, I've settled on the GSO 42mm SuperView.  I'm not entirely happy with it.  Although they claim it is 65*, it's really more like 57*, and acts more like a plossl.  However, weight is a a stickler for me, and I don't want anything heavier than about a pound in my refractor diagonals, so ...  The GSO SV 42mm is über cheap, and weighs less than the ES 28mm 68*.  Still, the image doesn't really grab me like the ES 28mm.  It's just kind of plain-plossl-looking.  Still, if you just want to see as much sky as can fit in your scope, the GSO 42mm SV is hard to beat.  I find it fairly well corrected, certainly to 55*, and that's the vast majority of its field.  Just don't expect a lively view.  Your Pan 35 will beat it, and probably somebody's ES 34mm 68*, too.  That one would be worth considering, but it, too, is quite a bit heavier, like the Pan 35, so it's the SV for me.  Good luck




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