Posts Made By: Markus Ludes

Only 2 years from contract date to end user first light, not bad for a 350 mm F/12 triplet apo project :-)

clear skies
Markus

Matthias finished again a great Job for APM in record time, 2 month only to build from scratch on a high quaity 12" F/7.5 tube assembly for a APM-LZOS 304 mm F/7.5 triplet SDuperED Apochromatic Refractor

thanks, Matthias

Markus

More how they perform under sky, when i get my first samples with TMB lenses for testing. So far the Skywatcher refractors 150F/750 with 32 mm könig eyepieces knocked my socks . The Tak was outstanding sharp and colorfree, same for the Borgs

Big Fujinion 25 x 150 ED 45° view with 2.9° Field, weight 18,5 kg. Almost complete colorfree at daytime excapt the outer edge of field , very high contrast. At nights it provides a rather flatfield view with good sharpness at the edge, but not absolutly pin point, again impressive contrast. The field could be seen completly with no problem and showed a good homogeneity , 3-d effect was here, deep sharpness was good, objects at daytime with diffrent distance required a refocusing, but not much. UHC Filters are available to fit over eyepieces. This Fuji is excellent for highest contrast wide field deep sky viewing with fixed magnification, at his 25 power unbeatable

Myauchi 141 Fluorite 45° ( weight 12,4 kg only)was tested with 25 power eyepieces 2.6° FOV and 33 x power with 2°. At 25 mm power the big Fujinon was very much brighter at night time and with 33 x power the Myauchi have had much higher resolution than the Fuji.( due higher power). The Myauchi is a Fluorite but not colorfree, at daytime objects i could easy find color and at bright stars in night too. Field is not flat and impression give not racersharp images again , edge correction is rather poor and field is not homogene. The Myauchi is relativly lightweight and extremly compact. I dont like it for day time observing and for Nightsky I like the possibility to exchange power. UHC and O III are available to put in eyepiece barrels.I dont like it for wide field viewing, but I like it for Deep Sky Object viewing in center of eyepiece field very much and I like the compactness very much. If the field would be more homogene in views it may would be my favourite, but so it is not.

Just for your Info, your MK 91 is not made by INTES PLUS, but possible by STF in moscow a new company with ex intes opticians. There should be no diffrence at all between STF and INTES, I found same equal in new MK 72

have crisp views

Markus

I am missing in this review the NIKON, Zeiss West, Olympus eyepieces

best wishes

Markus

You will have to wait a bit for more reviews. The Silverstar lenses have been known to be mounted unstable in here old cell, which was fully redesigned now and finaly beeing stable like they should. But such new optics coming now to slowly to the market due here faults in the past, so you simply need to wait until more coming and thasn they will start top speak about themself in either way

best wishes

Markus

up to 800 mm can be made from us , but we think starting at 600 mm we suggest to go with a Cassegrain or somthing similar, because than the MN gets a to big Monster

Markus

Hi Milt,

I using my Kowa 82 mm Fluorite now since several month at my lightpolluted city area, I used it in taiwan mountains at 3,800 mm latitidue anbd last weekend at our 1,800 latitiude Austria Starparty. I have all 3 eyepieces and have had plenty of chances to do side by side testings with other binoculars and apos.
The Kowa beets anything I have used to compare with

The Kowa beets the both modells of Myauchi 100 Fluorite in color, contrast and brightness, which means the Kowa shows brighter nebulaes and smaller magnitude stars. Same is valid against the very good Vixen BT 125 Bino. Using thew 50 power eyepiece, the Kowa show nebulaes better than in Fuji 150 ED with 25 power, thanks to the higher power in Kowa.
Last weekend we compared the Kowa against several diffrent 4 apos and the Kowa with 2 times 82 mm meets them in case we use same power in the apos.

So what to say about the Kowa ? The optics are as perfect as in best TMB and can handle powers up to 150 x without imagedegradation. They are my personal nice limit for airline transportation. They are such perfect that I will never sell them again.I have already baader Astrosolarfilters for them, I am getting next week from Sirius optics full size 82 mm UHC and O III filter for front and I am in talk with coronacor for a pair of SM 60 filters for it

If you have the money and if you want the by far worldbest bino, than you have no choice and your decision must be the Kowa Fluorite

best wishes

Markus

Edward,

you are right, that the diffrence with APQ 100/1000 will be less, but using a APQ 100/1000 designed for the prism only with a diagonal will convert the perfect APQ colorcorrection down to the level of a FS 102 and it will also decrease visible down the spherical correction

Markus

Regards the mount you have to find your best solution. Maybe your dealer loan you the Kowa mount for testing, than you can make better decision.

The filters can be ordered by Sirius optics, who just finishing my own large 82 mm UHC and O III Filters. I mashine my own filtercell, but I am shure Sirius can make you also the cell for the filters

glad to see another one using the worldbest bino in future. let me know how you like it

clear skies

Markus