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New apm 100 mm 90 degree ed apo binocular

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#1 guangtou

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Posted 16 January 2015 - 03:10 PM

https://www.facebook...92896386&type=1

 

 

Don't see it on their website yet but it's on their Facebook page. Time to upgrade!


Edited by guangtou, 16 January 2015 - 07:26 PM.


#2 Vondragonnoggin

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Posted 16 January 2015 - 03:30 PM

:applause:  :dalek:    :elephant:  :drool5:  :hamsterdance:    :rockon:  :tomatodance:  :snoopy:    :yay:



#3 Mark9473

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Posted 16 January 2015 - 03:32 PM

I've seen some pictures. Markus said the optical quality of the prototype he tested was "superb", and that they're designed to have a 6 mm circle of full illumination at the focal plane - so definitely no aperture reduction to be expected.


Edited by Mark9473, 16 January 2015 - 03:33 PM.


#4 Mark9473

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Posted 16 January 2015 - 03:36 PM

Here's a link to a photo of the prototype:

http://forum.astrono...p/posts/1130545



#5 Vondragonnoggin

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Posted 16 January 2015 - 04:33 PM

I want to see some user reports first, but if it's anything like his description on facebook, these will sell pretty good I think. I will be selling off my Semi-Apo 100's if reports come back good and I'll get a pair ordered this year. This is the one I've been waiting on for a long time. Should be an amazing instrument comfort-wise when viewing for long sessions. Actually it will be time to get rid of the Zhumell Tachyon 25x100's too. 

 

I hope they are as good optically as the 45° model.

 

Nice to have options. If you're doing combo terrestrial and astronomy, the 45° model, if just astronomy, the 90° model. Great stuff and a long time planning.



#6 Mark9473

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Posted 16 January 2015 - 04:53 PM

I'm ready to order as soon as he says he's taking orders. I think.



#7 junomike

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Posted 17 January 2015 - 07:54 AM

I'm ready to order as soon as he says he's taking orders. I think.

Any Idea of price?

 

Mike



#8 Mark9473

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Posted 17 January 2015 - 07:58 AM

I'm guessing the same as the 45° model?



#9 junomike

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Posted 17 January 2015 - 08:09 AM

I'm guessing the same as the 45° model?

Um, I'm thinking not.  Otherwise no one will buy the 45° version.  And although Marcus has brought several Astro-Items to the plate based on CN "chatter" and demand, he is also a businessman and I can't see

him letting these go for the same as the 45's as there's no  additional cost recovery for all his time and development.

 

I'm not a business major so lets hope I'm wrong.

 

Mike



#10 Mark9473

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Posted 17 January 2015 - 08:20 AM

:fingerscrossed:  :)



#11 Mark9473

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Posted 17 January 2015 - 08:22 AM

Well if it's €1K more, or higher, I'm going to go for a Borg binoscope as that would have 2" EP capability.

We'll see what he announces.



#12 GamesForOne

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Posted 17 January 2015 - 09:57 AM

I hope they are as good optically as the 45° model.

 

Nice to have options. If you're doing combo terrestrial and astronomy, the 45° model, if just astronomy, the 90° model. Great stuff and a long time planning.

 

I used the 45 deg model last night to observe a double shadow transit of Io and Europa at 138x. Jupiter displayed a hint of a color gradient across the disk, but otherwise the CA is well controlled. The view was very sharp. I could easily see the sharp black dots of the shadows and could just make out the bright disk of Io intruding into one of the dark belts.

 

It may not have been the optimal instrument to use last evening, but it was convenient and all that I had time to setup. I wasn't even aware of the double shadow transit until I was already out observing. That's the option I wanted with this bino (i.e. occasional higher power viewing) and it delivers.

 

At the same 138x in my suburb location I could just make out the E star in the Trapezium. I also used it at low power to quickly scan some of the clusters in Canis Major and observe Lovejoy. Lovejoy is huge in the field at 28x. There was too much skyglow to see a tail but surely it should be just visible from a dark sky location?

 

I am going to stick with my 45 deg model for now. I like the comfort from horizon to ~70 deg elevation as I can simply pull up a stool to my tripod and look directly into the EPs with little neck tilt and minimal height adjustments.

 

---

Michael Mc



#13 Mark9473

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Posted 17 January 2015 - 10:42 AM

Markus has replied that the 90° model will retail for $3100.

I'm assuming that is the export price without VAT, and that here in the EU it will be €3100 including VAT, or close to that..



#14 kcolter

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Posted 17 January 2015 - 11:46 AM

Wondering if a prototype might make it to WSP with Marcus this year.



#15 junomike

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Posted 17 January 2015 - 01:40 PM

Markus has replied that the 90° model will retail for $3100.

I'm assuming that is the export price without VAT, and that here in the EU it will be €3100 including VAT, or close to that..

So $110 Euro more than the 45° version.  Can't see anyone who's looking at getting a pair not want to add the small difference to get the 90° version (provided they provide the same views as the 45° version).

Also, I  wonder how or If this will effect the re-sale of the 45° Apo version? :question:

 

Mike



#16 Mark9473

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Posted 17 January 2015 - 02:36 PM

Markus has said the EU price VAT-included will be closer to €3200 due to the exchange rate. His contract is in $ apparently.

 

I see the 45° and 90° models co-existing quite nicely. There will always be people who prefer the 45° for daytime viewing.

I don't know why re-sale value is a consideration. New stuff comes out all the time, and usually it's better and cheaper (think electronics for example); at least here it's not cheaper.



#17 Val'Easy

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Posted 22 January 2015 - 04:15 PM

 

I used the 45 deg model last night to observe a double shadow transit of Io and Europa at 138x. Jupiter displayed a hint of a color gradient across the disk, but otherwise the CA is well controlled. The view was very sharp. I could easily see the sharp black dots of the shadows and could just make out the bright disk of Io intruding into one of the dark belts.

At the same 138x in my suburb location I could just make out the E star in the Trapezium.

 

Hi GamesForOne!

 

What 4 mm e.p. do you use?

 

My shortest focal eyepieces are XW-5 which give awesome images with the APM 100-45 Apo.

Baader Eudiascopic ED 3.8 has a significantly smaller FOV (45°) and 2 mm relief eye...

FOV of Vixen NVL 4 is also 45° with about 12-13 mm for the eye relief.

 

Clear skies!

 

Emmanuel


Edited by Val'Easy, 22 January 2015 - 04:19 PM.


#18 GamesForOne

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Posted 22 January 2015 - 05:25 PM

 

Hi GamesForOne!

 

What 4 mm e.p. do you use?

 

My shortest focal eyepieces are XW-5 which give awesome images with the APM 100-45 Apo.

Baader Eudiascopic ED 3.8 has a significantly smaller FOV (45°) and 2 mm relief eye...

FOV of Vixen NVL 4 is also 45° with about 12-13 mm for the eye relief.

 

Clear skies!

 

Emmanuel

 

 

I use the Pentax XW10's with 2.5x Televue Powermates. The APO bino has no problem focusing this combination. The load does, however, tend to cause some minor balancing issues with my fluid head. Ultimately I would like to find an eyepiece with similarly excellent optical performance (magnification, sharpness, eye relief, etc.). Until then I am happy with the XW/Powermate combination.

 

---

Michael Mc



#19 Val'Easy

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Posted 23 January 2015 - 08:42 AM

Thank you Michael.

 

When you says there is no problem focusing that means no difference of back focus with or without the 2.5x Powermate?

I never used 1.25" Tele-Vue 2.5x Powermate, so I don't know if the back focus is modified, slightly modified or not.

 

I believe (not sure) that XW-10 do not have a negative doublet in his optical design, perhaps that is why this combination works.

 

I also own a pair of XW-10's, TV 2.5x Powermate's could thus interest me.

 

May I ask you to post a picture of this combination?

 

Does the load and the total length tend to cause some minor optical shifts? (optical axis misalignment).

 

> Ultimately I would like to find an eyepiece with similarly excellent optical performance (magnification, sharpness, eye relief, etc.)

 

Perhaps with a pair of XW-3.5 or Delos 3.5 ;)

 

I enjoy my XW-5's (110x) and I am sure that the APM 100 Apo can still show good and beautiful images with higher magnifications for planetary observations.

 

Emmanuel



#20 GamesForOne

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Posted 23 January 2015 - 12:39 PM

Thank you Michael.
 
When you says there is no problem focusing that means no difference of back focus with or without the 2.5x Powermate?
I never used 1.25" Tele-Vue 2.5x Powermate, so I don't know if the back focus is modified, slightly modified or not.
 
I believe (not sure) that XW-10 do not have a negative doublet in his optical design, perhaps that is why this combination works.


Works with the XW14 and XW20 as well. The focus position is changed, but it is not a huge difference. I'm sorry but I don't remember if I have to rack in or out for the Powermate, but I know it is not close to any mechanical limit of the focuser.
 

I also own a pair of XW-10's, TV 2.5x Powermate's could thus interest me.
 
May I ask you to post a picture of this combination?


If you have one Powermate already, it's a cheaper route than two new premium eyepieces! I'm sorry but I don't have a picture handy. You just stick the Powermate in the focuser and then stick the EP in the Powermate... standard stuff. I've also thought about getting a second 5x Powermate as it works as well, plus the XW20 + 5x Powermate combo is shorter and lighter than the XW10 + 2.5x Powermate.
 

Does the load and the total length tend to cause some minor optical shifts? (optical axis misalignment).


Maybe some very minor shifts but I have had no problem comfortably merging the view in several uses of this combination. I don't think it is an issue since the bino focusers are quite sturdy.
 

> Ultimately I would like to find an eyepiece with similarly excellent optical performance (magnification, sharpness, eye relief, etc.)
 
Perhaps with a pair of XW-3.5 or Delos 3.5 ;)
 
I enjoy my XW-5's (110x) and I am sure that the APM 100 Apo can still show good and beautiful images with higher magnifications for planetary observations.


I've considered those 3.5mm options, but it is costly compared to what I already have. I'd really like to test at 157x first before I committed to $700+ in eyepieces. ;)

---
Michael Mc



#21 camvan

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Posted 23 January 2015 - 07:23 PM

forgive me for coming into the middle of this, but please tell me, how are these different from the one's Mr. Bill purchased from Lunt? 



#22 Rich V.

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Posted 23 January 2015 - 07:57 PM

Hi, Cameron, this new offering has a 90° eyepiece inclination instead of 45° like Mr. Bill's.  It's mainly a consideration for easiest astro use; the 45° would be a better choice for mixed astro and terrestrial viewing.  Having an option is a good thing...

 

Rich



#23 SchrödingersCat

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Posted 23 January 2015 - 09:08 PM

Other than ergonomic considerations is there a performance advantage of one over the other?



#24 Vondragonnoggin

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Posted 23 January 2015 - 09:28 PM

Other than ergonomic considerations is there a performance advantage of one over the other?

I wouldn't think so, but no one has one yet to compare. I don't think too many comparisons will come out either. Someone would have to own both for a little while using each equally to get a real idea of a difference. Theoretically no difference as long as both have full illumination and true aperture numbers.



#25 edwincjones

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Posted 24 January 2015 - 11:32 AM

in telescopes, 45 degree is lower quality than 90 degree diagonals

does that have any relationship to binoculars?

 

edj




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