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APM/LZOS Riccardi Designed 6"F/8 Apo doublet arriv

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#1 APM M.Ludes

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Posted 01 June 2012 - 09:58 AM

today the first 5 pc of the new Massimo Riccardi Designed SuperED doublet Apo's arrived

http://www.apm-teles...l-2-lenses.html

LZOS call it Semi-Apo, but here term of colorcorrection for an apo cannot be done with any doublet

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#2 AlienRatDog

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Posted 08 June 2012 - 06:57 AM

What is the price?

#3 Mark9473

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Posted 08 June 2012 - 08:40 AM

Click the link ...

#4 APM M.Ludes

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Posted 29 July 2012 - 08:34 AM

pictures of the OTA

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Image of the infocuse STar with 50 micron artifical star at 520 power

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#5 APM M.Ludes

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Posted 14 August 2012 - 03:25 PM

our baffle system

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the Apo in action at APM Backyard

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we tested this new doublet under real night sky objects

- Stars at 250 power infocuse completly color free, no spurios of purple

- Moon, Moon's Limp, Moon's craters at 250 power completely colorfree, no spurios of purple

- Jupiter at 250 power completly colorfree

Wolfgang Rohr measured one for us, the result is better then original designed

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so infocuse it is a real colorfree Apochromat

#6 gatorengineer

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Posted 16 August 2012 - 01:13 PM

I'll bite and ask why the cell is labelled SD-APO......

#7 APM M.Ludes

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Posted 16 August 2012 - 02:13 PM

SD = Super ED Glas, it use OK-4 and Ok-4 is SuperED Glas, thats why

#8 fugueman

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Posted 25 September 2012 - 04:31 AM

Is the contrast of this SD-APO noticeably better than TMB152 triplet APO?

Which one do you prefer, let alone the price?

#9 APM M.Ludes

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Posted 25 September 2012 - 01:52 PM

next 152 triplet I get in december, before I cannot compare, so cannot give a honest answere this moment, sorry, you need to wait

#10 Jeff B

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Posted 26 September 2012 - 08:37 AM

next 152 triplet I get in december, before I cannot compare, so cannot give a honest answere this moment, sorry, you need to wait


Well Markus, I got a 152/F8 triplet the other day so just send me a sample of the new doublet and I'll make the comparison for you. :grin: :grin:

My triplet is a seriously good scope, mechanically and optically. Right up there with the 130/9 I used to own. I was concerned about spherochromatism but that concern went away in about 3 seconds while doing the star test...and I'm slow. My only carp is that I wish the tube was 25-30mm shorter so that I can reach focus with my Denks with the power switch attached without the OCS in the optical path. I can get to focus without the power switch but that limits my high power viewing to ~150X.

Markus is to be congratulated for bringing this and the Chinese sourced new light weight doublets to the market for us visual folks!

Now how about the 175/F9 doublet!?

Jeff

#11 fugueman

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Posted 26 September 2012 - 09:27 AM

next 152 triplet I get in december, before I cannot compare, so cannot give a honest answere this moment, sorry, you need to wait


Thanks for your reply!

I'm interested in having such a hi-end class 6" APO for visual use only. So I'd like to make sure the practical differences of optical performance between the two types. Waiting……

#12 APM M.Ludes

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Posted 27 September 2012 - 10:47 AM

Jeff

if we see this 6" doublet will be accepted well in the market we will do bigger and smaller doublets.

One of my employee made a super compact OTA for his Tak FC 125, his total tube can be moved inside 3 parts, so it becomes airline portable. A design I have not seen anywhere in the world.

This design allo us to make the doublet super compact for transport

#13 APM M.Ludes

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Posted 27 September 2012 - 10:49 AM

due the spherochromatism which cannot be corrected in that doublet with the given glases, you see in this doublet on defocused stars spherochromatical colors.

However excact focused, its colorfree on moon, planets, vega , venus, not even a hint of halo :-), thanks to to the perfect visual optimisation from Massimo Riccardi and LZOS

#14 APM M.Ludes

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Posted 06 October 2012 - 04:32 PM

the refractor discuss this doublet and pal made a statement which is true.

the LZOS doublet show in-focuse no color at all, almost any doublet apo even with Fluorite show a purple halo on bright stars, the Riccardi designed does NOT

#15 fugueman

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Posted 14 February 2013 - 07:03 AM

next 152 triplet I get in december, before I cannot compare, so cannot give a honest answere this moment, sorry, you need to wait


Hi Markus,

Any updates about the comparison?

#16 APM M.Ludes

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Posted 14 February 2013 - 10:46 AM

President Putin delayed all LZOS production due urgent orders for satellite optics on same LZOS Polishing maschines, sorry

#17 johnnyha

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Posted 16 February 2013 - 09:29 AM

Mudak! :mad:

Putin's announcement was probably accompanied by photos of himself riding a satellite in a cosmonaut suit but still somehow shirtless. :vomit:

#18 Sgt

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Posted 17 February 2013 - 06:49 AM

I just find it funny as his self aggrandising in this way is tempered by the presence of his man-*BLEEP*.






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