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Zeissitis

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#201 PJ Anway

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Posted 30 October 2020 - 07:49 PM

Over the years I’ve owned:
two C50/540,
three Telementor 63/840,
two AS63/840,
two AS80/1200,
one “Presto” 80/840,
one AS 100/1000
Here is my current (and last) Zeiss - AS63/840:

 

 

AS63_Polaris.jpg


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#202 christie

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Posted 31 October 2020 - 12:51 AM

A little Zeiss grab and go the other night (wish the Vixen GP was baby blue!)

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#203 Grahaml

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Posted 31 October 2020 - 05:25 AM

for the tears,,amazing  bunch of  glass laugh.gif

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#204 christie

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Posted 31 October 2020 - 09:55 PM

Getting ready for a little more serious task for tonight. Evaluating my new set of Baader Morpheus in some twilight and early evening planetary viewing with the APQ 100/640.

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#205 Jim Curry

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Posted 01 November 2020 - 01:29 PM

A lot of very nice Zeiss eye candy on this thread!!


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#206 Astroman007

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Posted 01 November 2020 - 01:31 PM

If I am ever struck by Zeissitis, I fear my outraged wallet may murder me in my sleep. Lovely scopes however.



#207 christie

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Posted 04 November 2020 - 07:34 PM

A less demanding test for my new Baader Morpheus:

 

 

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#208 Tyson M

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Posted 06 November 2020 - 10:06 PM

This is my only offering for this thread: Zeiss Diascope zoom (essentially 25mm to 5mm focal length eyepiece I believe).

 

It is rarer than hen's teeth, and bleedingly expensive. 

 

Think "Leica zoom with lower and higher power settings and no EOFB"

 

20201106_200200.jpg

 


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#209 christie

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Posted 06 November 2020 - 11:17 PM

Tyson, what’s the physical size of that guy? I just did sort of my eyepieces and found a forgotten Zeiss pl 10x/20 (25mm equiv)

#210 Tyson M

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Posted 07 November 2020 - 09:38 AM

Tyson, what’s the physical size of that guy? I just did sort of my eyepieces and found a forgotten Zeiss pl 10x/20 (25mm equiv)

It's  fairly big, similar in size to an Ethos. I'll get a direct measurement tonight.



#211 junomike

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Posted 07 November 2020 - 02:46 PM

This is my only offering for this thread: Zeiss Diascope zoom (essentially 25mm to 5mm focal length eyepiece I believe).

 

It is rarer than hen's teeth, and bleedingly expensive. 

 

Think "Leica zoom with lower and higher power settings and no EOFB"

 

attachicon.gif20201106_200200.jpg

25.1mm - 6.9mm (If I recall correctly).

Excellent either way and if not for the smaller FOV (over the ASPH) I would have most likely bought one (back in the day).


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#212 Tyson M

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Posted 09 November 2020 - 01:45 PM

My optician got pretty excited when I opted for the Zeiss lenses.

176a6f785ea59f49ed4f0cd0fbe55835.jpg


Sent from my iPhone using Tapatalk

Ha I got Zeiss eyeglass lenses too. 



#213 Tyson M

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Posted 09 November 2020 - 01:47 PM

Tyson, what’s the physical size of that guy? I just did sort of my eyepieces and found a forgotten Zeiss pl 10x/20 (25mm equiv)

20201109_113647.jpg

 

Without the end caps, the measurements are 5 5/8" by 2 3/8".  With end caps 6" x 2 1/2".


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#214 christie

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Posted 09 November 2020 - 11:08 PM

That’s a big boy, allright

#215 christie

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Posted 12 November 2020 - 10:10 PM

That’s the eyepiece from their small Victory spotting scopes, isn’t it? What’s the field of view like? Did you need an adapter to fit it into a normal astronomical okular holder?



#216 Tyson M

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Posted 13 November 2020 - 12:33 PM

That’s the eyepiece from their small Victory spotting scopes, isn’t it? What’s the field of view like? Did you need an adapter to fit it into a normal astronomical okular holder?

It was for their spotting scopes. The bayonet adapter allows it for use in telescopes.  Heres the info from B&H website:

 

"Optical Performance

Focal length: 25.1 - 6.7 mm

Eye relief: 16 mm / 0.63"

DiaScope 65 mm AFOV - 43.5-67.2°

DiaScope 85 mm AFOV - 46-67.5°

 

Magnification:

65 mm: 15-56x
85 mm: 20-75x

 

Field of View:

65 mm 15x: 2.9° - 156.6 ' @ 1000 yd / 52.0 m @ 1000 m
65 mm 56x: 1.2° - 63.3 ' @ 1000 yd / 21.0 m @ 1000 m
85 mm 20x: 2.3° - 120.5 ' @ 1000 yd / 40.0 m @ 1000 m
85 mm 75x: 0.9° - 48.2 ' @ 1000 yd / 16.0 m @ 1000 m

LotuTec coating: Sheds water, dirt, grease, grime. Lenses can be wiped clean without smearingT* multicoating: lenses are fully multicoated with T* coatings to reduce flare, improve contrast, enhance light transmissionFL

Concept: fluoride glass lens elements deliver brighter and sharper images with accurate color and higher levels of contrast. They minimize chromatic aberrations while virtually eliminating stray light interference, image fuzziness, low contrast"


Edited by Tyson M, 13 November 2020 - 12:37 PM.

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#217 christie

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Posted 16 November 2020 - 02:09 PM

Thanks for the data, Tyson.

Now the $$$ question - how good is it? When do you use it compared to fixed length premium eyepieces?

#218 Tyson M

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Posted 21 November 2020 - 01:50 AM

Thanks for the data, Tyson.

Now the $$$ question - how good is it? When do you use it compared to fixed length premium eyepieces?

Well the $900 US dollar question is that it is very good.  Exactly like the Leica zoom, just no EOFB and higher zoom range.

 

I got to testing it last night and determined it is a wonderful eyepiece.  The zoom range is incredible.  For grab and go lunar/planetary, this eyepiece is the only eyepiece you need.

 

At highest power, it looked identical as my 6.5mm morpheus on Mars.  I could easily discern continent details bisecting the planet. These were: Syrtis Major was at the top, Mare Tyrrhenum in the middle and Mare Cimmerium on the bottom edge.

 

I tried the Lumicon dark red filter and settled on using the diascope zoom only, as the variable conditions meant the zoom was more practical and providing optimum views by reducing magnification slightly.  

 

This eyepiece would be even more effective with a long focal length telescope for larger image scale but that's not a fault of the eyepiece. I was impressed and am looking forward trying this out on the moon in average seeing/transparency.

 

With transparency issues turning ugly at times with thin faint obstructions clouding over, I noticed a bright "cloud" of light scatter from the red planet at the lowest setting.  This is how I could tell my skies werent the greatest.  Naked eye confirmed the faint cloud issues engulfing the planet.

 

I noticed heat plumes from the eyepiece, like the leica zoom.  Took a bit longer to cool than my fixed eyepieces, but no surprise as it was the same with the Leica when I had it. 


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#219 cavecollector

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Posted 21 November 2020 - 02:58 AM

Hey Tyson, which Zeiss eyepiece is this exactly? It sounds really great, I would love to get one but when I search I get a variety of results. I don't want to spend all of this money only to find out I purchased the wrong one. Any links or other guidance oh wise one?



#220 j.gardavsky

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Posted 21 November 2020 - 07:01 AM

This eyepiece is the Zeiss D 20x - 70x Zoom, displaced later with a shorter and smaller zoom,

and hard to get unless you buy it together with the old Zeiss Diascope, discontinued as well.

 

Best,

JG


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#221 denis0007dl

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Posted 21 November 2020 - 08:26 AM

My favorite Carl Zeiss part of equipment I ever had: Carl Zeiss APOCHROMATIC & SHARPEST binoviewer 😀

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#222 christie

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Posted 22 November 2020 - 01:04 AM

Thanks for the review Tyson. I was thinking it would be a good default eyepiece for the grab and go Presto.
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#223 cavecollector

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Posted 22 November 2020 - 01:16 AM

How hard is it finding these Zeiss zoom eyepieces?

 

How do these compare with the current Zeiss Victory Harpia 23-70x (95) eyepieces currently being sold?



#224 Tyson M

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Posted 22 November 2020 - 02:35 AM

How hard is it finding these Zeiss zoom eyepieces?

 

How do these compare with the current Zeiss Victory Harpia 23-70x (95) eyepieces currently being sold?

Very hard.

 

That eyepiece looks to be comparable to mine. I think the Diascope zoom has a lower magnification, lower power setting at 15x.

 

It looks great to be honest, a bit smaller but 2mm more eyerelief. 

 

All you would need is a bayonet adapter to click on to make it 1.25".


Edited by Tyson M, 22 November 2020 - 02:54 AM.


#225 Muffin Research

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Posted 22 November 2020 - 04:12 AM

Hi there, 

 

 

https://imgur.com/a/zqY0PA0

 

5lSmPQv.png

 

 

CyVkYkF.png

 

cheers

wow.. do you have kids? can I be in your will? :)

 

This is obvious the winner and the pinnacle of Zeissyness..  the über APQ with the mount from top notch other manufacturers yet Zeiss labeled.

Just gorgeous.. definitely the right thing to buy in '98

I'll bet you you haven't been scouring forums endlessly wondering what else to buy to look up at the sky. 


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