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Posts Made By: Markus Ludes

November 12, 2008 07:32 AM Forum: APM

Re: New line of APM/LZOS apo refractors

Posted By Markus Ludes

early this year I placest a order for 10 pc 100/800 with guaranted minimum high strehl of 98 % as an 10 year anniversäry modell , now soon the delivery will start


January 27, 2009 08:01 AM Forum: Zeiss


Posted By Markus Ludes


what you want to do with the lens ? Build a finder, then do it maybe straight with a 2" focuser for 2" eyepueces, or build a real telescope , then you need to select first a focuser

if you want to use a stardiagonal the backfocuse shall be about 130 mm behind end of fully racked in focuser so you can use any normal eyepieces


March 23, 2009 09:30 AM Forum: Eyepieces

The new Leica ASPH zoom 17.6-8.8mm

Posted By Markus Ludes

Hi Andreas

I used the same eyepiece at WSP 2009, but I have had to order as a Leica Dealer the eyepiece with the expensive Apo-Spotting scope, I was told by Leica they will not sell the eyepiece alone right now.

Did you have had to buy also the spotting scope or could you really buy the eyepiece standalone ? If yes in Germany ?


October 24, 2009 02:13 PM Forum: Refractors

New Apo's

Posted By Markus Ludes

Hi Guys

right now I am the weekend in New Jersey , but going tomorrow to Moscow for the monday meeting with LZOS.
Cross your fingers and wish me some luck in my business talk with them for the new modells.
I hope I come home thuesday with some news.

have all a nice weekend, nicer then here in the raining New Jsersey :-)

Markus Ludes

June 16, 2010 03:46 AM Forum: Refractors

150mm 4 lens skywatcher refractor

Posted By Markus Ludes

Bresser has a 152 mm achromat with 4 lenses, 2 in front, 2 in the big 3" focuser

thats 4element has a better corrected imaging field and a colorcorrection like a 6"F/8 achromat


October 12, 2011 07:16 AM Forum: APM

M82 with APM/LZOS 175 and 228

Posted By Markus Ludes

Imaging Infos

8 hours Luminanz 7"f8 LZOS APO

3 hours Luminanz 9"f9 LZOS APO

5,5 hours RGB 7"f8 APO

3 hours RGB 9"f9 APO

9 hours HA 7"f8 APO

Total Illumination time: 28,5 hours

October 18, 2011 07:35 AM Forum: APM

Next APM 400 Maksutov Cassegrain in Progress

Posted By Markus Ludes

front of primary mirror showing a USA chart :-)

November 18, 2011 02:42 PM Forum: Refractors

Got Aperture Fever?

Posted By Markus Ludes

will show a perfect bright rainbow


December 3, 2011 04:08 AM Forum: APM

APM 406 mm F/4000 mm Maksutov Cassegrain

Posted By Markus Ludes

Markus Ludes said:

after 1.5 year delivery time for the optics, we completed 23 days ago the next 16"F/10 Maksutov Cassegrain, OTA, build for a US customer at the west coast
Matthias made the tube again with cooling fans, attachments for Astro-Physics Traveller Guider Scope, 3" Starlight focuser etc.....

Tube weight is about 114 pound
tube diameter is about 20.4 inch
Tube length is about 43.4 inch

This is the third 16" Mak we build over the last few years of this size

happy weekend

January 13, 2012 02:09 PM Forum: Zeiss

Price list from Catalogue

Posted By Markus Ludes

I have all, drop me your email adresse and I send you a copy next week or tomorrow