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Equipment Discussions >> Eyepieces

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ausastronomerModerator
Carpal Tunnel
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Loc: Kiama NSW (Australia)
Delos and the plastic disk
      #5464976 - 10/11/12 08:25 AM

Can anyone tell me which focal length Delos have the cheap plastic disc inside the lens barrel near the eye lens. Do they still have this or has TV changed and now supplying all focal lengths with metal retaining rings?

Cheers


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Damo636
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Re: Delos and the plastic disk new [Re: ausastronomer]
      #5465031 - 10/11/12 09:37 AM

The 10mm has it John. I don't know if Televue have changed it or have any plans to do so, but for me it really cheapened an otherwise superb eyepiece. It never actually came loose on mine, but did flex with nothing more than a blast from a bulb blower. I have since went back to a 10mm XW, partly because of this.

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deister
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Re: Delos and the plastic disk new [Re: ausastronomer]
      #5465093 - 10/11/12 10:13 AM

Hello John,

only the 10mm has (or had) the plastic disc. If TeleVue changed this disc to a metal one i dontīt know. The 6mm and the 17.3mm i one have a solid metal disc.

TeleVue sent me a new plastic disc for exchange on my 10mm Delos.


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helpwanted
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Re: Delos and the plastic disk new [Re: deister]
      #5465527 - 10/11/12 03:23 PM

i have the 10mm Delos, no problems with any disk... never took apart the eyepiece though... no need to.
i think with normal use, it's a non-issue.


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RodgerHouTex
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Re: Delos and the plastic disk new [Re: helpwanted]
      #5465566 - 10/11/12 03:53 PM

I believe they are referring to the field stop which is at the bottom of the eyepiece and is exposed. You don't need to take the eyepiece apart to get at it.

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Alvin Huey
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Re: Delos and the plastic disk new [Re: RodgerHouTex]
      #5465744 - 10/11/12 05:53 PM

Mine came off two months ago. I can't find it.

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ausastronomerModerator
Carpal Tunnel
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Loc: Kiama NSW (Australia)
Re: Delos and the plastic disk new [Re: Alvin Huey]
      #5465781 - 10/11/12 06:26 PM

Thanks for the help everyone.

I was planning to buy the 6mm Delos. Yeah yeah I know, unfortunately Pentax don't make a 6mm XW do they

However, if the 6mm was the one with the cheap and nasty disk on the bottom I was going to pass on it. As the 6mm has "all metal construction" I will go ahead and buy it.

The 6mm focal length is one a have a need for, particularly in my 10" and 14" scopes, where it gives 214X and 267X respectively. I do have a 6mm UO HD ortho but I am getting too old and cranky for short eye relief these days.

Update
A 6mm Delos is now winging its way to beautiful Kiama on the NSW South Coast

Cheers,


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Scanning4Comets
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Re: Delos and the plastic disk new [Re: ausastronomer]
      #5465868 - 10/11/12 07:30 PM Attachment (123 downloads)

John,

Here is the bottom of the 6mm Delos I had in Feb of 2011. No plastic disc is on it at all. From drift timing the eyepiece several times the 6mm Delos gave me 196x/22' in my 10" F/4.72 Reflector.

Cheers,


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Scanning4Comets
Markus
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Re: Delos and the plastic disk new [Re: Scanning4Comets]
      #5465883 - 10/11/12 07:36 PM Attachment (83 downloads)

Here it is next to a ruler showing reference to the size. Subtract about 1/2", or just less than that because this is how much longer it is here with the Antares Twist Lock adapter on the eyepiece, and the twist mechanism on the eyepiece was up a little bit in this pic as well.

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Scanning4Comets
Markus
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Re: Delos and the plastic disk new [Re: Scanning4Comets]
      #5465891 - 10/11/12 07:40 PM Attachment (79 downloads)

Bottom of 6mm Delos with Antares Twist Lock Adapter on it...

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ausastronomerModerator
Carpal Tunnel
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Re: Delos and the plastic disk new [Re: Scanning4Comets]
      #5465915 - 10/11/12 08:00 PM

Hi Mark,

From those pictures I am guessing it is about the same size and weight as my 5mm Pentax XW?

Cheers,
John B


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Pinbout
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Re: Delos and the plastic disk new [Re: ausastronomer]
      #5466114 - 10/11/12 10:56 PM

10mm delos

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Scanning4Comets
Markus
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Re: Delos and the plastic disk new [Re: ausastronomer]
      #5466116 - 10/11/12 10:59 PM Attachment (58 downloads)

Here is a pic showing my Pentax 5.2mm XL without the Antares Twist Lock adapter showing lengths both with the eye cup in the down and up positions respectively. Weight without the adapter is 1 pound. The wide angle 28mm Lens of my digital camera makes the perspective look "off", but measurements that I quoted on the pics are accurate from looking with the eyepiece next to the steel ruler.

Hope this helps John!

Cheers,


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GlennLeDrew
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Re: Delos and the plastic disk new [Re: Pinbout]
      #5466119 - 10/11/12 11:00 PM

If this plastic disk is merely the field stop, and is not doing double duty to hold the eyepiece together, that by itself should not put one off. But if it too easily falls off, that's not good.

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Scanning4Comets
Markus
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Re: Delos and the plastic disk new [Re: GlennLeDrew]
      #5466125 - 10/11/12 11:04 PM

Here's a good thread:

10mm Delos in the house!

And here is the thread where that plastic ring fell off someones 10mm Delos below:

Delos 10mm what is this?

Cheers,


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ibase
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Re: Delos and the plastic disk new [Re: Scanning4Comets]
      #5466254 - 10/12/12 01:55 AM

Hi Mark, I'm very glad that the Delos 6mm that I got from you via trade doesn't have the plastic disk.

Best,


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Scanning4Comets
Markus
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Re: Delos and the plastic disk new [Re: ibase]
      #5466264 - 10/12/12 02:13 AM

Hi Hernando!

No doubt about that sir! I'm still enjoying the 7mm Pentax XW you sent me for the trade.


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Binojunky
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Re: Delos and the plastic disk new [Re: Scanning4Comets]
      #5466538 - 10/12/12 09:18 AM

Considering the price of the Delos eyepieces, plastic parts that come adrift should not be happening, not wishing to get flamed but as TeleVue prices seem on the up and up at a farly regular rate this plastic ring dropping off issue is in itself enough to put me off and consider other makes,JMPOV,DA.

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ausastronomerModerator
Carpal Tunnel
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Re: Delos and the plastic disk new [Re: GlennLeDrew]
      #5466563 - 10/12/12 09:36 AM

Quote:

If this plastic disk is merely the field stop, and is not doing double duty to hold the eyepiece together, that by itself should not put one off. But if it too easily falls off, that's not good.




Hi Glenn,

Your and my opinions obviously differ dramatically on this. I don't pay $300 plus for any eyepiece with plastic rings that come adrift. Can you picture Zeiss or Leica designing and building an eyepiece in this fashion?

Cheers,


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Pinbout
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Re: Delos and the plastic disk new [Re: ausastronomer]
      #5466568 - 10/12/12 09:42 AM

Quote:

I don't pay $300 plus for any eyepiece with plastic rings that come adrift.




with tax and shipping it's closer to $400.

a plastic baffle to hide the smallest abberation that only if you knew what to look for you could find it.

it must show up on planets and the moon because of their brightness.

boy now I'm wondering what it is...



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dscarpa
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Re: Delos and the plastic disk new [Re: ausastronomer]
      #5466807 - 10/12/12 12:24 PM

My one of the first shipped 17.3 Delos has a metal disk. I like the look of that Antares twist-lock adapter and just ordered one. I want to be able to add a 1.25" eyepiece to the mix when I'm using 2" ones with a minimum of fumbling around in the dark. With a thumb screw type adapter on an eyepiece it doesn't fit into anything but giagantic bolt cases. Not so with the twist-lock. David

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Alvin Huey
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Re: Delos and the plastic disk new [Re: Pinbout]
      #5466816 - 10/12/12 12:27 PM

I have been observing with mine without the plastic disk and it does NOT affect performance at all. In fact, I wholeheartedly recommend the entire Delos series if you want the ultimate in performance in deep sky or planets in any widefield eyepiece.

So that is why I didn't "miss" the ring...as I knew the true reason why TV put it there. I wouldn't get hung up by it.

This is coming from a Zeiss ZAO-II owner. I use both sets the ZAO-II for the deepest of the deep and the Delos if I need the field.

Back at TSP when TV brought the new Delos (14, 12, 8, 4.5 and 3.5), I along with other deep sky crazies played with them with several large telescopes and were very impressed. The telescopes we used...the smallest was a 28" reflector. Here is a short post on this thread.

I have the 4.5, 8 and 14 on order.

Edited by Alvin Huey (10/12/12 01:02 PM)


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northpole
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Loc: Ontario, Canada
Re: Delos and the plastic disk new [Re: Alvin Huey]
      #5466945 - 10/12/12 03:26 PM

I have the 6 and 10mm Delos, and I haven't had any issues with the disk. I think they are fantastic: sharp, flat field, less edge brightening than my Pentax XL's. The adjustable eyecup works really well. I'm looking forward to getting the 4.5!

Andre


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csrlice12
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Re: Delos and the plastic disk new [Re: Pinbout]
      #5466959 - 10/12/12 03:35 PM

Quote:

Quote:

I don't pay $300 plus for any eyepiece with plastic rings that come adrift.




with tax and shipping it's closer to $400.

a plastic baffle to hide the smallest abberation that only if you knew what to look for you could find it.

it must show up on planets and the moon because of their brightness.

boy now I'm wondering what it is...






Odd, reminds me of the ES82* 8.8mm having to use a "felt disk" to prevent flaring.....Anyone notice a flaring problem without it?


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Scanning4Comets
Markus
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Re: Delos and the plastic disk new [Re: csrlice12]
      #5466990 - 10/12/12 04:04 PM

Quote:

I have been observing with mine without the plastic disk and it does NOT affect performance at all. In fact, I wholeheartedly recommend the entire Delos series if you want the ultimate in performance in deep sky or planets in any widefield eyepiece.

So that is why I didn't "miss" the ring...as I knew the true reason why TV put it there. I wouldn't get hung up by it.

This is coming from a Zeiss ZAO-II owner. I use both sets the ZAO-II for the deepest of the deep and the Delos if I need the field.

Back at TSP when TV brought the new Delos (14, 12, 8, 4.5 and 3.5), I along with other deep sky crazies played with them with several large telescopes and were very impressed. The telescopes we used...the smallest was a 28" reflector. Here is a short post on this thread.

I have the 4.5, 8 and 14 on order.




Good stuff Alvin! If they compare favorably to the Zeiss ZAO-II's, it would be well worth grabbing a few Delos eyepieces! I had the 6mm, but only traded for less mag at the time, plus I just found it a big LONG ergonomically speaking which one can easily get used to.

Cheers,


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dscarpa
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Re: Delos and the plastic disk new [Re: ausastronomer]
      #5467004 - 10/12/12 04:13 PM

I use my 17.3 Delos with a 1.5X Siebert barlow, 2X and 3X TV barlows, 2.5X and 5X Powermates. I can get all the FLs I need from my 17.3 Delos with them. The Delos barlows very well. David

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Starman1
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Re: Delos and the plastic disk new [Re: dscarpa]
      #5468568 - 10/13/12 04:17 PM

AFAIK, the plastic disc is NOT a field stop--that's further up inside the eyepiece. I believe it was a baffle added to catch a reflection from part of the barrel, probably in Moon viewing. Alvin can confirm that.
I think there were a couple eyepieces affected and TV has taken steps to prevent anyone else from ever having that issue.
I think the presence of the disc, whatever material it is made from, represents TeleVue's attempt to achieve as close to perfection in the design as they can--otherwise, it would simply have been left off.
And Alvin can testify that its presence or absence under dark skies isn't critical, obviously.

By the way, most of my Ethos eyepieces have a black plastic disc glued to the bottoms in between the 2" skirt and 1.25" barrel. It's there to prevent reflection back from the bottom of the eyepiece.

Edited by Starman1 (10/13/12 04:23 PM)


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Starman81
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Re: Delos and the plastic disk new [Re: dscarpa]
      #5468772 - 10/13/12 07:11 PM

Quote:

I use my 17.3 Delos with a 1.5X Siebert barlow, 2X and 3X TV barlows, 2.5X and 5X Powermates. I can get all the FLs I need from my 17.3 Delos with them. The Delos barlows very well. David




Having one great eyepiece and using barlows to get the rest of the focal lengths always tempts me. But there usually ends up being some magnification gaps unless you have like 5 barlows (like you do). Maybe 2 great eyepieces and a series of 3 barlows would be a little more versatile of a lineup. Like the 17.3mm and 10mm Deloi with 2x, 2.5x and 3x barlows yielding:

17.3, 10, 8.7, 6.9, 5.8, 5, 4, 3.3
for
70x, 120x, 138x, 174x, 207x, 240x, 300x, 360x in a 1200mm FL 8" or 10" dob. But I digress...


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Binojunky
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Re: Delos and the plastic disk new [Re: Starman81]
      #5469713 - 10/14/12 12:24 PM

Worth remembering that if you have the manufacturer making his profit, TeleVue making theirs plus the retailer getting his cut, shipping half way around the world, any import tarrifs then the $300+ eyepice may start its life out at about a third of that ??? DA.

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Mike B
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Re: Delos and the plastic disk new [Re: Starman81]
      #5469816 - 10/14/12 01:32 PM

Quote:

Maybe 2 great eyepieces and a series of 3 barlows would be a little more versatile of a lineup.



Well, it all looks so tidy on paper... the real stumper is that Barlows are notoriously variable in their amplifying effects- depending on the EP they're mated with.

I was just out yesterday afternoon, a tape-measure hangin' on a streetlight ~80 feet away, trying three different EPs in three diff Barlows, plus NO Barlow. Got x-factors like:
TV 2x: 1.95x -to- 2.39x
Dakin 2.4x: 2.23x -to- 2.61x
UO Klee 2.8x: 2.33x -to- 3.07x

Then last night (well, 3-5:00 ayem ) i used these same EPs & Barlows to watch the last 25% of Io's dance across Jupiter... spent a nice li'l while fiddling with EP+Barlow combo's until i found the view i liked... whatever the heck its magnification was!

Yes, i'd made myself a cheat-sheet of the various combos & their x-factors, as a guide, but this was merely a "guide". But i still hunt-'n-pecked my way thru using my eye... was much more fun than sittin' at a calculator.


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The Ardent
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Re: Delos and the plastic disk new [Re: Alvin Huey]
      #5470140 - 10/14/12 04:43 PM

+1

I tried the 10 and 6 this weekend at Staunton River and was very impressed. I had them next to each other in a TEC turret so was able to compare quickly. Looked at doubles and some showpiece DSO for about two hours.
I dont use the entire 82* of the Nagler type 6 and I like the longer eye relief, so the Delos are on my shopping list.

Quote:

In fact, I wholeheartedly recommend the entire Delos series if you want the ultimate in performance in deep sky or planets in any widefield eyepiece.






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Starman81
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Re: Delos and the plastic disk new [Re: Mike B]
      #5470286 - 10/14/12 06:03 PM

Quote:

Quote:

Maybe 2 great eyepieces and a series of 3 barlows would be a little more versatile of a lineup.



Well, it all looks so tidy on paper... the real stumper is that Barlows are notoriously variable in their amplifying effects- depending on the EP they're mated with.

I was just out yesterday afternoon, a tape-measure hangin' on a streetlight ~80 feet away, trying three different EPs in three diff Barlows, plus NO Barlow. Got x-factors like:
TV 2x: 1.95x -to- 2.39x
Dakin 2.4x: 2.23x -to- 2.61x
UO Klee 2.8x: 2.33x -to- 3.07x

Then last night (well, 3-5:00 ayem ) i used these same EPs & Barlows to watch the last 25% of Io's dance across Jupiter... spent a nice li'l while fiddling with EP+Barlow combo's until i found the view i liked... whatever the heck its magnification was!

Yes, i'd made myself a cheat-sheet of the various combos & their x-factors, as a guide, but this was merely a "guide". But i still hunt-'n-pecked my way thru using my eye... was much more fun than sittin' at a calculator.





Haha, yes I am sure we all get a little overboard with our spreadsheets and calculators making sure we have every possible observing scenario covered! It makes for a fun activity while the nights are cloudy and if it was clear, I would have been out there with you!


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BillP
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Re: Delos and the plastic disk new [Re: Mike B]
      #5470321 - 10/14/12 06:27 PM Attachment (22 downloads)

Quote:

Quote:

Maybe 2 great eyepieces and a series of 3 barlows would be a little more versatile of a lineup.



Well, it all looks so tidy on paper... the real stumper is that Barlows are notoriously variable in their amplifying effects- depending on the EP they're mated with.




All depends where that field stop is located in the eyepiece which is what is doing it. If it is offset from the shoulder of the eyepiece any, then the Barlow magnification will vary according to the particular Barlow's offset sensitivity. Klee is one of the more sensitive ones so adding a little distance gives a fairly large change.


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Mike B
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Re: Delos and the plastic disk new [Re: BillP]
      #5470379 - 10/14/12 07:17 PM

Ooo- nice chart- thanks Bill!

Quote:

All depends where that field stop is located in the eyepiece which is what is doing it.




Interestingly, the EP that ran on the top end of my spread, and for each Barlow considered, was a 10mm CZJ Ortho... i suspect its 1-1/4" adapter was jacking it up in the saddle a bit, leading to the greater magnifications.

The other two EPs were Olympus micro's, coverted to astro by Gerd Neumann... they, too, had 1-1/4" adapters, but for whatever reason still tracked consistently & notably LOW for amplification- each about the same for each Barlow.

Checking each EP & Barlow out, sighting on a tape measure, has been my practice for a while now... has been interesting to see the variations, plus it helps my cheat-sheet guide choices at the scope.

However, no plastic discs were seen in any samples...


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GeneT
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Re: Delos and the plastic disk new [Re: Alvin Huey]
      #5470440 - 10/14/12 08:08 PM

I agree. I have the 6 and 10 Delos. Fantastic eyepieces. I have on pre-order the 8 and 14.
GeneT


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Alvin Huey
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Re: Delos and the plastic disk new [Re: Starman1]
      #5471759 - 10/15/12 03:21 PM

Quote:

AFAIK, the plastic disc is NOT a field stop--that's further up inside the eyepiece. I believe it was a baffle added to catch a reflection from part of the barrel, probably in Moon viewing. Alvin can confirm that.
I think there were a couple eyepieces affected and TV has taken steps to prevent anyone else from ever having that issue.
I think the presence of the disc, whatever material it is made from, represents TeleVue's attempt to achieve as close to perfection in the design as they can--otherwise, it would simply have been left off.
And Alvin can testify that its presence or absence under dark skies isn't critical, obviously.

By the way, most of my Ethos eyepieces have a black plastic disc glued to the bottoms in between the 2" skirt and 1.25" barrel. It's there to prevent reflection back from the bottom of the eyepiece.




Yes, that is correct Don regarding the purpose of the disk.

And I have not noticed a difference without the disk versus with the disk under dark skies. I can verify when I get the replacement disk from TV...I can somehow temporarily put it on and pull it off for A vs B comparison, but I won't spend much time doing that.


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Mike B
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Re: Delos and the plastic disk new [Re: Alvin Huey]
      #5471780 - 10/15/12 03:37 PM

Yes, clearly not a job for us amateurs... perhaps someone knows a good chiropractor who can evaluate these disks?


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dscarpa
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Re: Delos and the plastic disk new [Re: ausastronomer]
      #5476736 - 10/18/12 11:07 AM

I got my Antares twist-lock adapter a few days ago. I put it on my 1.5X Siebert barlow with the 17.3 Delos-which is excellent on Jupiter and the Moon with my cats-all of which fit in a large bolt case. I was using the combo in my IM-715 and C-9.25 back to back with my 13 Ethos and 20 ES100. It was a lot easier just to pop the Delos-Siebert barlow into the cats without having to put the diagonal's stock thumb screw-compression ring adapter on. I've got two more adapters on the way. Thanks for the tip! David

Edited by dscarpa (10/18/12 11:14 AM)


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Geoff M
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Re: Delos and the plastic disk new [Re: ausastronomer]
      #5654942 - 01/31/13 07:42 PM

The first minute I received my 10mm Delos, I was appalled to see this cheap, retrofitted piece of plastic on my $370 eyepiece. The only reason I didn't return it immediately was because of Astronomiccs' 15% re-stocking fee(I have now vowed to never again buy anything sight-unseen from any dealer who charges this draconian restocking charge-most major dealers do not.) As far as I know, the 10mm is the only Delos with the plastic disk.(I just bought an 8mm and 12mm.) The plastic ring is much smaller than 1/2 way in between the diameters of the outer(metal) rings of the 8 and 12, so my best take is that a portion of the light cone is being blocked by the plastic offender. In A-B testing against a Pentax XW 10mm (2 observers), the Delos 10mm very obviously showed lower light transmission (from a partially blocked light cone?). However, stars are very sharp right to the edge of the field, markedly better than the XW. The Televue support team's evasive comments on other forums-they refuse to put any reason in print why this cheap ring is there (to avoid a recall) or justify why this and no other TV ocular has had this modification after design completion (obviously in a blind rush to get it to market) makes me smell a rat-Anyway, I'm very happy with the 8 and 12 Delos offerings.
Geoff M

Edited by Scott in NC (03/07/13 07:54 PM)


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Jim Romanski
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Re: Delos and the plastic disk new [Re: ausastronomer]
      #5656089 - 02/01/13 10:44 AM

Have you tried calling Televue to ask if they still use the "cheap and nasty disk" on any of their Delos?

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Starman81
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Re: Delos and the plastic disk new [Re: Jim Romanski]
      #5656564 - 02/01/13 03:12 PM Attachment (47 downloads)

Is this the disk or has it been changed already? I did some A/B tests with the 10 Delos and XW 10 (along with the Baader Hyperion 10) over the course of a couple months on a variety of objects and the Delos had excellent 'transmission'; everything that could be seen in the XW was seen in the Delos.

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Geoff M
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Re: Delos and the plastic disk new [Re: Starman81]
      #5656987 - 02/01/13 07:10 PM

Hi Starman,
Yep, that plastic looks like mine, bought last Aug., I think...As far as I know, this feature has not changed. I was in L.A. at a local vendor(WHCT) and their 10mm in stock had the ring. That's why I bought my 8mm and 12mm Delos oculars there(I think visual and tactile inspection before purchase is becoming a higher priority to me. It's tough, though, living 4-8 hours from the nearest vendor.) As far as observing goes, there was no scientific study or measurement done in our A-B's. Also, no comparison was done with the disk removed. All of the objects we saw just seemed brighter through the XW(12.5 inch f5 dob, fairly fast- which could be a factor in any possible light path issues, which vary with telescope f/ratio). Faint stars and Nebulae just seemed to stand out a bit more in the XW than the Delos. I still thought the views were really great in the Delos 10- very sharp to the edge-sharper than the XW at the edge(I'm super happy with my 8 and 12's Delos' too, and fully intend to get the 17.3, 6 and maybe 4.5). My main issue with the whole thing is that plastic thing. After reading of another user's experience of it falling off, being familiar with the properties of many adhesives in the sub-freezing weather I observe in, and knowing my luck, it would fall off and land perfectly, adhering itself to the $2400 primary on my 16. For the money I paid, I just expected a little bit better fit and finish.


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Geoff M
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Re: Delos and the plastic disk new [Re: Jim Romanski]
      #5657018 - 02/01/13 07:35 PM

Hi Jim,
The "cheap and nasty disk", henceforth to be named "Little Nasty":(kind of a catchy moniker, actually)was still on the shelf stock 10mm Delos of a local dealer(not sure of mfg. date, though). Ironically, I did have a lengthy conversation with Al Nagler the day I bought this eyepiece. It was also the day before Televue released the additional Delos focal lengths available. If Al had given me a ballpark idea of the new products focal length range, or that they were releasing this info the next day, my purchase would have been a different one 17.3/12/8/6 and maybe 4.5 is the set for me. (I did ask Al about the focal lengths, and about pacorr positions-he suggested I buy a paracorr type II-not necessary(salesmanship?), since there are eyepiece adapter work-arounds to parfocalize the longer Delos', but that's off topic, I guess). After this and after reading accounts of Televue's responses to the disk issue, I just got that "sales above all" feeling. I was kind of shocked. I'm still a loyal TV user, though, just a bit more wary.


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BillP
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Re: Delos and the plastic disk new [Re: Geoff M]
      #5657100 - 02/01/13 08:40 PM

Quote:

...and knowing my luck, it would fall off and land perfectly, adhering itself to the $2400 primary on my 16. For the money I paid, I just expected a little bit better fit and finish.




I agree...but in your case to protect your investment would recommend you purchase an inexpensive color filter, unscrew the retaining ring and remove the filter glass, then use the now filterless housing and screw onto bottom of Delos. That will keep the plastic disk in place and also let you to continue to use filters if needed.


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tomcody
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Re: Delos and the plastic disk new [Re: BillP]
      #5657141 - 02/01/13 09:08 PM

Quote:

Quote:

...and knowing my luck, it would fall off and land perfectly, adhering itself to the $2400 primary on my 16. For the money I paid, I just expected a little bit better fit and finish.




I agree...but in your case to protect your investment would recommend you purchase an inexpensive color filter, unscrew the retaining ring and remove the filter glass, then use the now filterless housing and screw onto bottom of Delos. That will keep the plastic disk in place and also let you to continue to use filters if needed.



Makes one wonder why Telvue just does not use a screw in metal disk and avoid all the bad comments?
EDIT What I am asking is; why are they installing a plastic glued-in disk instead of making a metal disk with threads that is screwed into the filter threads? Or am I not seeing something correctly in the pictures? ( I have not yet looked at a 10mm Delos in person). Perhaps There would be a market for such a machined disk made by Precise Parts or the like? Anyone care to comment?
Rex

Edited by tomcody (02/02/13 10:48 AM)


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Scanning4Comets
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Re: Delos and the plastic disk new [Re: tomcody]
      #5657280 - 02/01/13 10:30 PM

Someone did a test with and without the disc and noted no difference.

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Scanning4Comets
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Re: Delos and the plastic disk new [Re: Scanning4Comets]
      #6250252 - 12/13/13 02:59 AM

I'm going to resurrect this thread, since I just ordered the 10mm TV Delos !!!!

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Pinbout
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Re: Delos and the plastic disk new [Re: Scanning4Comets]
      #6250387 - 12/13/13 07:29 AM

Quote:

I just ordered the 10mm TV Delos !!!!




I got him to admit it was infamous...

http://www.youtube.com/watch?v=MFMRk-Hhic0


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Jim Romanski
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Re: Delos and the plastic disk new [Re: Scanning4Comets]
      #6250737 - 12/13/13 11:23 AM



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csrlice12
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Re: Delos and the plastic disk new [Re: Jim Romanski]
      #6250770 - 12/13/13 11:41 AM



It ain't quite dead yet.....


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Scanning4Comets
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Re: Delos and the plastic disk new [Re: csrlice12]
      #6332891 - 01/24/14 02:53 PM

That's right! I am re-reading this since I now have the 10mm Delos in my possession! Great thread BTW!

I've only used mine once and the disc on mine is still there. Did they completely fix it yet? If they did, what did they do?


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Starman1
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Re: Delos and the plastic disk new [Re: Scanning4Comets]
      #6332915 - 01/24/14 03:01 PM

Quote:

That's right! I am re-reading this since I now have the 10mm Delos in my possession! Great thread BTW!

I've only used mine once and the disc on mine is still there. Did they completely fix it yet? If they did, what did they do?



Better glue.


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csrlice12
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Re: Delos and the plastic disk new [Re: Starman1]
      #6333102 - 01/24/14 04:19 PM

Glue is made from dead horses.......

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