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What Might These Be?...

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#1 Dave Bush

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Posted 22 August 2019 - 10:10 AM

 Curious whether or not these might be an unbranded version of ???

Attached Thumbnails

  • EP1.jpg
  • EP2.jpg
  • EP3.jpg


#2 csrlice12

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Posted 22 August 2019 - 10:14 AM

Orion Expanse clones...good in longer fl scopes, the 6&9 are decent in f5 scopes.  


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#3 Starman1

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Posted 22 August 2019 - 10:35 AM

Yes,  Exactly.


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#4 nicoledoula

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Posted 23 August 2019 - 11:12 AM

Decent is the correct word. The 9mm is the best of the bunch but has finicky eye placement. The 6mm has reflection issues that can be fixed through blackening. Good, maybe even great, for noobs on a very tight budget. (9 + 6) 



#5 Myk Rian

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Posted 23 August 2019 - 05:28 PM

I have an Orion expanse 6mm. Nice ep.

Myk

#6 BillP

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Posted 24 August 2019 - 03:52 PM

6 and 9 do well in faster focal ratio scopes.  15 and 20 do horribly off-axis.



#7 spongebob@55

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Posted 24 August 2019 - 03:55 PM

I've been looking for the eye relief on these but can't find it.  Any information on these?  I am an eyeglass wearer.  How's specifically is the 9mm?  And if you have info on the others too.  I'm using f/10 and f/12 scopes.

Thanks

Bob



#8 Starman1

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Posted 24 August 2019 - 04:14 PM

I've been looking for the eye relief on these but can't find it.  Any information on these?  I am an eyeglass wearer.  How's specifically is the 9mm?  And if you have info on the others too.  I'm using f/10 and f/12 scopes.

Thanks

Bob

6.0 1.25 66°  14.8mm
9.0 1.25 66°  15.0mm
15.0 1.25 66°  13.0mm
20.0 1.25 66°  18.0mm

Eye relief is the last figure, in mm.

I don't think they are compatible with glasses use.

You should download this: https://www.cloudyni...uide/?p=9288710

which will answer a lot of questions about specific eyepieces.

For eyeglasses, look for 20mm of eye relief or more.


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#9 Frisky

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Posted 24 August 2019 - 05:14 PM

I have the 9mm. Though it reads "Long Eye Relief" on the eyepiece, to prevent kidney-beaning and get a good view, I have to press my eyebrow lightly on the raised eyecup. At first, I hated this eyepiece but have learned to use it. I agree that it's not likely to be a good choice for use with eyeglasses. 

 

Joe


Edited by Frisky, 24 August 2019 - 05:15 PM.

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#10 Miranda2525

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Posted 24 August 2019 - 07:39 PM

I use the 20mm and 15mm's in a William Optics binoviewer. I also had a pair of the 9mm's, but the 9mm's gave me 300x, which is power I rarely used, so I sold them off. The 20's gave me 155x and the 15's gave me 200x. The 9mm kidney beans a lot if you are not used to it as Frisky said above. Eye relief on the 20mm pair are really good. eye relief on the 15mm pair are closer to 15mm, only because I have to use a barlow to reach focus, and that makes the relief a bit longer.

 

They are great for planets & the moon.

 

For fun, I tried the 20mm and 15mm's on their own in my 10" Orion XTi. The performance alone was really bad, lol.


Edited by Miranda2525, 24 August 2019 - 07:43 PM.

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