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Equipment Discussions >> Eyepieces

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Darren Drake
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Reged: 10/09/02

Loc: Chicagoland
17mm Hyperion VS 17.3mm Delos
      #5182871 - 04/21/12 09:07 AM

I have a bit a a gap in this focal length area and being the owner of a 10mm Delos I've been thinking of the 17.3 Delos but can't help but wonder if there might be a much more affordable alternative. Has anyone done a side by side comparison of the 17.3 Delos with a 17mm Hyperion? If I can get 90 % the performance for 1/3 the price that's hard to ignore here. I'm mostly using it with an f/4.4 dob and paracorr. Thanks

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howard929
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Reged: 01/02/11

Loc: Low End of High Ground
Re: 17mm Hyperion VS 17.3mm Delos new [Re: Darren Drake]
      #5182962 - 04/21/12 10:27 AM

Have you ruled out the 68 degree FOV 16mm ES for $119?

Howard


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Darren Drake
Carpal Tunnel
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Reged: 10/09/02

Loc: Chicagoland
Re: 17mm Hyperion VS 17.3mm Delos new [Re: howard929]
      #5183014 - 04/21/12 11:01 AM

Yes I want the 20mm of er.

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Jeff Morgan
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Reged: 09/28/03

Loc: Prescott, AZ
Re: 17mm Hyperion VS 17.3mm Delos new [Re: Darren Drake]
      #5183164 - 04/21/12 12:34 PM

I loaned my 17.3 to an observing buddy to compare against his Hyperion in his 10 f/5 Newtonian. He used M35 as the target and after some time said the Delos was sharper. Tighter stars, better at the edges, better resolution on the nearby NGC cluster whose designation escapes me at the moment.

I took a quick look and agreed. Not having an interest in buying Hyperions, I did not do extensive A/B comparison. It will be interesting to see if he goes out to buys a Delos.

As far as "90% at 1/3 the cost" - probably. I really don't think that way though. For me it is a binary result - better or not.

Edited by Jeff Morgan (04/21/12 12:40 PM)


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Scanning4Comets
Markus
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Reged: 12/26/04

Re: 17mm Hyperion VS 17.3mm Delos new [Re: Jeff Morgan]
      #5183210 - 04/21/12 01:13 PM

No doubt that the 17.3mmm Delos will be really sharp right out to the edges. The Hyperion will have soft edges and if you like edge sharpness get the Delos!

Another alternative is the Orion / Vixen 17mm LVW!

Cheers,


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whirlpoolm51
professor emeritus
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Reged: 01/05/12

Loc: pittsburgh,pa
Re: 17mm Hyperion VS 17.3mm Delos new [Re: Scanning4Comets]
      #5183752 - 04/21/12 07:18 PM

jeff i think you are talking about ngc 2185??? or it might 2815??? now it slipped my mind hahahah!!!!

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Scanning4Comets
Markus
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Reged: 12/26/04

Re: 17mm Hyperion VS 17.3mm Delos new [Re: whirlpoolm51]
      #5183790 - 04/21/12 07:56 PM

Wrong cluster there dude, it is NGC-2158. Pretty faint from the city.

NGC-2158

Cheers,


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GeneT
Ely Kid
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Reged: 11/07/08

Loc: South Texas
Re: 17mm Hyperion VS 17.3mm Delos new [Re: Darren Drake]
      #5183905 - 04/21/12 09:16 PM

Not always, but like that old saying, you get what you pay for. Many have posted that the Hyperions are great value for the money. However, the Delos are excellent performers. I own the six and plan to add the 8. I am going to do an A B comparison with my Nagler 12 and the Delos 12. Expensive eyepieces are just that--expensive. In my opinion, if they yield sharper views, then the extra money is well spent.

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SeattleScott
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Reged: 10/14/11

Re: 17mm Hyperion VS 17.3mm Delos new [Re: GeneT]
      #5184035 - 04/21/12 11:52 PM

The Paracorr would help, but I have heard the Paracorr works better with expensive eyepieces. Not having a Paracorr or a Hyperion I cannot say how much it would help. From what I have heard, one doesn't even need a Paracorr at F4.5 with a Delos or LVW. I do have some LVW's and they are sharp to the edge in my F4.8. And they are considerably cheaper than a Delos, although they are considerably more expensive than a Hyperion. Happy medium?

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eklf
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Reged: 05/12/07

Loc: Carrboro, NC
Re: 17mm Hyperion VS 17.3mm Delos new [Re: SeattleScott]
      #5184476 - 04/22/12 10:37 AM

Consider the hyperion roundup by Daniel Mounsey - he compares the hyperion and ethos at 17mm - which might give a clue about Hyperion vs delos.

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DaveJ
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Loc: NE Ohio
Re: 17mm Hyperion VS 17.3mm Delos new [Re: eklf]
      #5184668 - 04/22/12 12:28 PM

Quote:

Consider the hyperion roundup by Daniel Mounsey - he compares the hyperion and ethos at 17mm - which might give a clue about Hyperion vs delos.




For the review by Daniel Mounsey that eklf mentioned, it's here


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Scanning4Comets
Markus
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Reged: 12/26/04

Re: 17mm Hyperion VS 17.3mm Delos new [Re: DaveJ]
      #5200973 - 05/01/12 10:42 PM

So it looks as if the 17mm Hyperion has a sharp field stop, whereas the others have fuzzy field stops. I like having sharp field stops in my eyepieces, so the 17mm would be nice to use.

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Jon Isaacs
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Reged: 06/16/04

Loc: San Diego and Boulevard, CA
Re: 17mm Hyperion VS 17.3mm Delos new [Re: SeattleScott]
      #5201297 - 05/02/12 06:33 AM

Quote:

From what I have heard, one doesn't even need a Paracorr at F4.5 with a Delos or LVW. I do have some LVW's and they are sharp to the edge in my F4.8.




An eyepiece does not reduce the coma so the coma has to be there and observable. A bright star taken to the edge is a good test.

Jon


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Scanning4Comets
Markus
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Reged: 12/26/04

Re: 17mm Hyperion VS 17.3mm Delos new [Re: Jon Isaacs]
      #5202389 - 05/02/12 05:48 PM

The 7mm XW and 6mm Delos shows stars sharp to the edges in my 10" f/4.72. If you don't believe me John, Fly down here and look into my scope yourself.

Bring a 6mm Delos though, because I no longer have it! Ask Hernando, he has it now,

Cheers,


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Darren Drake
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Reged: 10/09/02

Loc: Chicagoland
Re: 17mm Hyperion VS 17.3mm Delos new [Re: Scanning4Comets]
      #5202493 - 05/02/12 06:40 PM

Since the Delos is to rich for my blood right now I found a 17mm Hyperion on the mart and sent out the check today. Will report back....

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simpleisbetter
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Reged: 04/18/11

Re: 17mm Hyperion VS 17.3mm Delos new [Re: Darren Drake]
      #5202525 - 05/02/12 06:58 PM

Congrats, I don't believe you'll be disappointed.

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Scanning4Comets
Markus
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Reged: 12/26/04

Re: 17mm Hyperion VS 17.3mm Delos new [Re: simpleisbetter]
      #5202539 - 05/02/12 07:05 PM

Darren,

Let us all know if the field stop in the 17mm Hyperion is sharp like others have stated...I am going to be shopping for one soon!


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dscarpa
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Reged: 03/15/08

Loc: San Diego Ca.
Re: 17mm Hyperion VS 17.3mm Delos new [Re: Darren Drake]
      #5202540 - 05/02/12 07:05 PM

As the owner of a 17.3 Delos and former owner of a 17 Hyperion I have to say 90%? No way! The main issue I had with the Hyperion in my cats and refractor was the outer third of the FOV was quite a bit lighter giving DSOs a washed out look. Other than that it was a pretty good eyepiece with very good edge correction in my 80mm Lumicon Super Finder F3.75. However the Delos as I'm sure you're aware is a excellent eyepiece and it blows the Hyperion out of the water as far as image quality is concerned. I think a 17 Vixen LVW would be a good choice to use with the 10 Delos. David

Edited by dscarpa (05/02/12 07:09 PM)


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kkokkolis
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Reged: 09/23/09

Loc: Piraeus, Greece
Re: 17mm Hyperion VS 17.3mm Delos new [Re: dscarpa]
      #5203008 - 05/03/12 12:50 AM

The field stop of 17H is sharp. I don't get that outer FOV brightening. Nagler 17 is more spectacular (I don't know about Delos) but I couldn't let 17H go. Even if the TVs are better the 17H does its job effectively. If someone gets a better 17, there still is the option to change the focal length and continue to use it.

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drollere
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Reged: 02/02/10

Loc: sebastopol, california
Re: 17mm Hyperion VS 17.3mm Delos new [Re: kkokkolis]
      #5203030 - 05/03/12 01:16 AM

i am currently using the 31mm hyperion in place of the 30mm pentax XW, simply because it is lighter and the apparent field is just a bit wider. (i believe it is marketed as 68º AFOV but my drift timings gave 73º.)

there is noticeable astigmatism above a field angle of about 25º -- more than in either the 30mm XW or the 30mm meade 5000 "plossl" -- but i am not bothered by it. the eyepiece delivers a dark, scintillating field and vivid, natural star color. it's especially enjoyable with star and globular clusters and to put double stars in their natural habitat. the eye rest and eye relief are very nice.


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