10mm Ethos on the way!

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  • Member since
    July, 2003
  • From: Eastern SD.
10mm Ethos on the way!
Posted by johnjohnson on Sunday, January 19, 2014 8:11 PM

I needed a 10mm focal length eyepiece to make 250X with my 20" Obsession. I was torn between the 10mm Delos and the 10mm Ethos, with the Delos having better eye relief. I thought long and hard and have settled for the Ethos as I already have an 8mm. I can live with the eye relief of the 8 so the 10 should be no problem.

I am expecting it on 1/21/14 and realize that such of an expenditure will have a proportionally long period of bad weather. I apologize to anyone in my area to whom I bring bad observing conditions upon.

Hope to give an observing report soon!

JJ

20" F5 Obsession, OMI mirror .987 Strehl. 10" F4.7 reflector. 6" F5 ST reflector. 120mm F7.5 EON. 80mm F11.3 guide scope. SkyWatcher EQ-6 Hyper Tuned.   Flicker Astro Site   More Astro Images

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  • Member since
    October, 2007
Posted by zachsdad on Monday, January 20, 2014 8:10 AM
You'll love that EP, John. Mine gets me 208X in my 18" and with its 100 degree FOV it is a great galaxy cluster eyepiece.

Terry's Law of Cosmology: "Light travels faster than sound. That's why some people appear bright until you hear them speak."

18" Obsession Classic dob #1665

10" Orion Skyquest Classic dob

 120mm Orion ST achromat

15 X 70 celestron Skymaster binoculars

  • Member since
    March, 2008
Posted by Antitax on Monday, January 20, 2014 10:08 AM

   Yep, I tried a 13mm Ethos on a 16-inch f/6 custom newtonian, an 11-inch Schmidt-Cassegrain (f/10 and f/6.3), and on a couple 10-inch f/5 Sky-Watcher newtonians. It is very sharp to the very edge, there's only a trace of non-roundness close to the field stop, and you need to look with attention to notice it. I don't remember seeing lateral false color in fields of averagely bright stars, it seems to be quite well corrected for all aberrations.

   Very large fields are a must for non-tracking scopes but 100° oculars are too heavy/long/expensive for my me and my gear. Next month I'll order a 4.7mm 82° Explore Scientific. For these magnifications a large field is not a luxury at all, and the 119€ price is not in the luxury range either. After I receive the so-called tax "refund", I'll place my order immediately.

    It will give 102x with my 80mm (204x with barlow), 320x with the 300mm dob, and 265x with the 127mm Celestron 5. All the practical highest powers will be covered on all my instruments with only one eyepiece, got to have a buying strategy.

TS 8x40 Wildlife, 10x50 Marine/Fujinon 16x70/TS 80mm triplet, 6x30 finder, EQ-3 mount, TS 2" 99% diagonal/Celestron C5+ and 6x30 finder, DIY tripod/5" Bahtinov/12" GSO dob, 8x50 finder/Meade 2" 24mm 82°/Hyperion 24,13,10mm 68°/TS Expanse 17mm 70°/SW 7mm Panorama 82°/Ultima 2x barlow/Astronomik UHC-E filter/Baader O-III/Astro Solar 5" & 80mm filters/Sky Atlas 2000/Rükl's Moon Atlas/Canon 400D/5mW green laser

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  • Member since
    July, 2001
  • From: PA, USA, Earth Moderator
Posted by DaveMitsky on Monday, January 20, 2014 3:55 PM

I've owned the 13mm Ethos for a number of years and have been very happy with it.  (It replaced my 13mm Nagler Type 6.)  I've also had occasion to use just about every other Ethos in the line, with excellent results.  Given the cost I was not willing to buy any more, however, and picked up the 9 and 20mm Explore Scientific 100 degree AFOV eyepieces instead.  Before the Delos line was released, I had the opportunity to try out the 6 and 10mm models and liked them very much. Eventually, I bought the 6, 8, and 10mm Delos eyepieces.

Dave Mitsky

Sic itur ad astra!

Chance favors the prepared mind.

A man is a small thing, and the night is very large and full of wonders.

  • Member since
    October, 2005
Posted by leo731 on Monday, January 20, 2014 3:59 PM

Good to read about your selection John.  It will be interesting to read of your opinion of it once the sky clears.

L

A nebula in the eyepiece is worth two in the Atlas.

  • Member since
    July, 2003
  • From: Eastern SD.
Posted by johnjohnson on Monday, January 20, 2014 4:57 PM

Thanks guys for the "ETHOsiasim" about this eyepiece. Did I just coin a new phrase for these EP's? Makes me feel better about the expense. I have been spending money on AP lately and need to get back to some visual. I had a big hole in my line up of EP's between my 12mm T4 and the 8mm Ethos. The 8mm was pushing seeing conditions in the 20" at 318x. I'm hoping the 10mm will be a lot more useful at 254x. It was on rare occasions I got to use the 8. Now looking at the FOV of my 12 T4 and the 10 E, the 12 may not be used much anymore. I'll just jump from the 17 T4 to the 10 E.

JJ

20" F5 Obsession, OMI mirror .987 Strehl. 10" F4.7 reflector. 6" F5 ST reflector. 120mm F7.5 EON. 80mm F11.3 guide scope. SkyWatcher EQ-6 Hyper Tuned.   Flicker Astro Site   More Astro Images

  • Member since
    July, 2003
  • From: Eastern SD.
Posted by johnjohnson on Tuesday, January 21, 2014 1:37 PM

Received the 10 Ethos today. It is a nice looking EP. Forgot how big the Ethos boxes were. Been a long time since I got my 8E.

As predicted the weather is terrible for the next 4 days with temps at -10f and lower at night..cloudy and snow flurries!

Guess I will just admire the EP for the next few days.

JJ

20" F5 Obsession, OMI mirror .987 Strehl. 10" F4.7 reflector. 6" F5 ST reflector. 120mm F7.5 EON. 80mm F11.3 guide scope. SkyWatcher EQ-6 Hyper Tuned.   Flicker Astro Site   More Astro Images

  • Member since
    October, 2005
Posted by leo731 on Wednesday, January 22, 2014 12:38 PM

Glad it arrived in good shape through the horrid weather.

Put it on your nightstand and dream of brilliant nebulae to come.

L

A nebula in the eyepiece is worth two in the Atlas.

  • Member since
    July, 2003
  • From: Eastern SD.
Posted by johnjohnson on Wednesday, January 22, 2014 3:30 PM

Thanks Leo.

I almost slept with it under my pillow. It has such sexy and beautiful lines. Slim and sleek compared to my pot bellied 31mm T5.

JJ

20" F5 Obsession, OMI mirror .987 Strehl. 10" F4.7 reflector. 6" F5 ST reflector. 120mm F7.5 EON. 80mm F11.3 guide scope. SkyWatcher EQ-6 Hyper Tuned.   Flicker Astro Site   More Astro Images

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