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Equipment Discussions >> Eyepieces

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Clay Gilliland
member


Reged: 10/16/10

Loc: Chandler, Arizona
Re: 17mm Hyperion VS 17.3mm Delos new [Re: Darren Drake]
      #5203125 - 05/03/12 05:41 AM

Good choice. I've been very pleased with mine. Blowing wads of cash to buy bragging rights just isn't that high on my list right now.

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ibase
Vendor Affiliate
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Reged: 03/20/08

Loc: Manila, Philippines 121*E 14*N
Re: 17mm Hyperion VS 17.3mm Delos new [Re: Scanning4Comets]
      #5203433 - 05/03/12 10:08 AM

Quote:

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




Mark, I wish that were so, but it's still with my buddy in Canada! He said he is scheduled to arrive here May 12 with the Delos 6mm, I'm counting the days! Until then, I can't comment on Delos threads.

I do have a sibling of the Hyperion 17mm, the Hyp 21mm, and it's a good EP, I like the big big eye lens and the comfort in using it owing to the generous eye relief.

Best,


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russell23
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Reged: 05/31/09

Loc: Upstate NY
Re: 17mm Hyperion VS 17.3mm Delos new [Re: ibase]
      #5203456 - 05/03/12 10:20 AM

I have a 17.3mm Delos on the way. Skies Unlimited got them in stock yesterday. Mine should arrive tomorrow so I can expect clear skies in June to test it. Sorry people in upstate NY.

Dave


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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]
      #5203515 - 05/03/12 10:50 AM

I have a 31 Hyperion Aspheric and Hyperion Zoom 2 both of which have better image quality and don't have the light outer FOV issue my regular Hyperions did. I bought the regulars about 4 years ago. Maybe the lighter outer FOV problem of the older ones has been addressed in newer runs. David

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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: dscarpa]
      #5215480 - 05/10/12 01:06 PM

I should get the Hyperion 17 today and hope to get a chance to use it briefly in the 12 inch after I get back home tonight....

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Scanning4Comets
Markus
*****

Reged: 12/26/04

Re: 17mm Hyperion VS 17.3mm Delos new [Re: Darren Drake]
      #5215933 - 05/10/12 05:01 PM

Good stuff Darren!

I am re-vamping my eyepieces! I may pick up a 10mm XW and 17mm Hyperion. I need the 17mm to fill a gap I have been missing for a while!

The 17mm Hyperion + O-III and Ultrablock will do well for M-42 when it comes around again, and the 10mm XW will be a workhorse for a lot of things!

As long as the 17mm Hyperion has a sharp field stop, I would be willing to put up with less than perfect edges.

Let me know how it comes along!

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]
      #5216788 - 05/11/12 09:47 AM

I had a chance to briefly use the 17mm Hyperion last night with the 12 inch f/4.9 with a paracorr 2 and saw very nice on axis images and the images towards the edge did degrade somewhat but not to much. I will have to compare with more detail with other eyepieces in a faster scope next week but considering the cost I'm very happy with the eyepiece.

I also noticed that the field stop is pretty sharp and with the comfortable eye relief the observing experience is quite pleasant. I look forward to more views with it soon.


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desertlens
professor emeritus
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Reged: 12/06/10

Loc: 36°N 105°W
Re: 17mm Hyperion VS 17.3mm Delos new [Re: Darren Drake]
      #5216887 - 05/11/12 10:49 AM

The 17mm Hyperion works very well for me in an ƒ10 SCT. Using a 2" diagonal, the Hyperions sit deep and actually shorten the ƒ-ratio a bit. With this diagonal the SCT is probably operating closer to ƒ11 with most EPs. At ƒ6, the edge performance falls off somewhat. I have no direct experience but I'd guess that the Delos would be better in faster scopes.

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Darren Drake
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Reged: 10/09/02

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Re: 17mm Hyperion VS 17.3mm Delos new [Re: desertlens]
      #5221536 - 05/14/12 09:40 AM

I had a chance to use the 17mm last night with my f/4.4 with paracorr and was happy with the off axis performance. Stars stayed pretty sharp to the edge but I didn't do any deep sky viewing with my limited time I had. I suspect it is a good alternative to the Delos but still wanna do more comparisons soon.

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george tatsis
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Reged: 11/20/08

Loc: Flushing, NY - Europe
Re: 17mm Hyperion VS 17.3mm Delos new [Re: Darren Drake]
      #5841136 - 05/05/13 04:12 AM

Quote:

I had a chance to use the 17mm last night with my f/4.4 with paracorr and was happy with the off axis performance. Stars stayed pretty sharp to the edge but I didn't do any deep sky viewing with my limited time I had. I suspect it is a good alternative to the Delos but still wanna do more comparisons soon.




Darren,

Any update on this one since then?

George


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Jon Isaacs
Postmaster
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Reged: 06/16/04

Loc: San Diego and Boulevard, CA
Re: 17mm Hyperion VS 17.3mm Delos new [Re: Darren Drake]
      #5841193 - 05/05/13 06:52 AM

Quote:

I had a chance to use the 17mm last night with my f/4.4 with paracorr and was happy with the off axis performance. Stars stayed pretty sharp to the edge but I didn't do any deep sky viewing with my limited time I had. I suspect it is a good alternative to the Delos but still wanna do more comparisons soon.




If it's like the other Hyperion/Stratus eyepieces, look for the edge sharpness as well as a "bright edge." In my experience the Hyperion/Stratus's are not evenly illuminated across the field and are pretty messy off-axis in a fast scope.

Jon


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george tatsis
professor emeritus
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Reged: 11/20/08

Loc: Flushing, NY - Europe
Re: 17mm Hyperion VS 17.3mm Delos new [Re: Jon Isaacs]
      #5841474 - 05/05/13 11:23 AM

Quote:

Quote:

I had a chance to use the 17mm last night with my f/4.4 with paracorr and was happy with the off axis performance. Stars stayed pretty sharp to the edge but I didn't do any deep sky viewing with my limited time I had. I suspect it is a good alternative to the Delos but still wanna do more comparisons soon.




If it's like the other Hyperion/Stratus eyepieces, look for the edge sharpness as well as a "bright edge." In my experience the Hyperion/Stratus's are not evenly illuminated across the field and are pretty messy off-axis in a fast scope.

Jon




The fast scope tolerance is a notorious minefield when it comes to non-premium wide field eyepieces. However, at f/6.3, my 8mm,10mm,13mm and 21mm Hyps work beautifully without any visible edge aberrations.Premium performance at a down to earth price

I addition, unlike some comments I've heard over the years regarding their field stop, my Hyperions have a sharp field stop and an evenly illuminated field.It must be the F/6.3 which happens to be more forgiving than the f/5 and f/4 scopes IMO.

Edited by george tatsis (05/05/13 01:17 PM)


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Scanning4Comets
Markus
*****

Reged: 12/26/04

Re: 17mm Hyperion VS 17.3mm Delos new [Re: george tatsis]
      #5841636 - 05/05/13 01:01 PM

Bottom line in a fast scope for both, (I have tried both):

17.3mm Delos: Needs a Paracorr, has the best transmission out of all.
17mm Hyperion: Not suitable in a fast scope and has edge of field brightening.

Alternative which I am getting soon myself: 17mm Vixen LVW: Excellent in a fast scope with only very minor edge coma and good transmission.

Cheers,


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george tatsis
professor emeritus
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Reged: 11/20/08

Loc: Flushing, NY - Europe
Re: 17mm Hyperion VS 17.3mm Delos *DELETED* new [Re: Scanning4Comets]
      #5841694 - 05/05/13 01:30 PM

Post deleted by george tatsis

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ohioalfa64
sage


Reged: 08/16/12

Loc: Ohio (NW)
Re: 17mm Hyperion VS 17.3mm Delos new [Re: george tatsis]
      #5846706 - 05/07/13 09:49 PM

Let us know how the 17mm Vixen LVW compares here Markus.

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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]
      #5846761 - 05/07/13 10:21 PM

Quote:

I had a chance to use the 17mm last night with my f/4.4 with paracorr and was happy with the off axis performance. Stars stayed pretty sharp to the edge but I didn't do any deep sky viewing with my limited time I had. I suspect it is a good alternative to the Delos but still wanna do more comparisons soon.




If you get the chance, also compare it to a 17 Nagler. I owned one for years, but recently sold it because a 17 did not match up that well with a 12.5 inch, F5 Dob. The 17 Nagler often shows up on people's favorite eyepiece lists. It has 17mm of eye relief, enough for viewing with glasses. A 14 Delos fits in better for my viewing preferences on my telescope.


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Scanning4Comets
Markus
*****

Reged: 12/26/04

Re: 17mm Hyperion VS 17.3mm Delos new [Re: GeneT]
      #5846971 - 05/08/13 12:44 AM

Quote:

Markus

Excellent choice! Make sure you keep us posted though!
However, I get the feeling that you should have posted it on the Radian 18mm thread,right?

George




I was all set on trading my 22mm LVW for a 17mm LVW or an 18mm Radian. I was convinced by a few people, (Erik Wilcox), Jason, (Chopin), and (Mike B). to keep the 22mm LVW and not trade it off !!! Jason actually said he would drive up to my house and slap me if I did...LOL! Figuratively speaking of course!!!

So I decided to keep the 22mm LVW as I would regret trading it off for a 17mm Vixen LVW, so I am now saving up to get the 17mm LVW instead and have both the 22mm LVW and 17mm LVW in my aresenal !!! I bet the 18mm Radian is a really nice EP tho ! I still want to try one out anyways for fun!

Quote:

Let us know how the 17mm Vixen LVW compares here Markus.




Will do, when I get one, LOL!

Cheers,


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george tatsis
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Reged: 11/20/08

Loc: Flushing, NY - Europe
Re: 17mm Hyperion VS 17.3mm Delos new [Re: Scanning4Comets]
      #5847008 - 05/08/13 01:26 AM

I think it's about time we went back to the initial topic.

17mm Hyperion VS 17.3mm Delos

Not many replies here.I get the feeling that the owners of Hyp are pretty happy with what they've got, and see no reason for an upgrade.

Why should they after all, especially if their scopes are f/6+.Have no experience with the 17mm, but the 8mm,10mm,13mm and 21mm Hyperions worked good enough for me to make me sell the XWs last year.

No additional detail, or gain in general was visible with the more expensive, wide- field oculars used in the comparison, which included the corresponding fls of both the Delos and the Ethos.The FOV of the Ethos was impressive though.

George

Edited by george tatsis (05/08/13 01:31 AM)


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ohioalfa64
sage


Reged: 08/16/12

Loc: Ohio (NW)
Re: 17mm Hyperion VS 17.3mm Delos new [Re: george tatsis]
      #5849710 - 05/09/13 10:27 AM

I understand this is being shanghai'ed. I am interested in the 17mm wide view eyepieces out there, which are priced from average to expensive. I like TV eyepieces, but am not wedded to them or others. An acceptable Vixen LVW version causes me no embarrassment to use it. Similarly a Hyp, is equally acceptable. I just want to learn from others here on the plus/minus of the choices.

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Starman81
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Reged: 03/06/08

Loc: Metro Detroit, MI, USA
Re: 17mm Hyperion VS 17.3mm Delos new [Re: ohioalfa64]
      #5849865 - 05/09/13 11:45 AM

Quote:

I understand this is being shanghai'ed. I am interested in the 17mm wide view eyepieces out there, which are priced from average to expensive. I like TV eyepieces, but am not wedded to them or others. An acceptable Vixen LVW version causes me no embarrassment to use it. Similarly a Hyp, is equally acceptable. I just want to learn from others here on the plus/minus of the choices.




For the Hyperion vs Delos, I think the main differences are going to be in edge correction, edge of field brightening or field brightness, and transmission. I'm sure in the first 2, the Delos would have a nice-sized advantage and for the 3rd, would also be in the lead, but that would be more subtle.


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