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Russian Mars lens meets Rudbeckia fulgida
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PostPosted: Sat Sep 11, 2010 5:41 pm    Post subject: Russian Mars lens meets Rudbeckia fulgida Reply with quote

Well, some long time ago I was able to "liberate" the last two surviving multispectral quartz fluorite lenses from the russian mission to Mars. Made by LOMO and designed by GOI, they represent (to me) a top result of the designers under Prof. Volossov who headed the optical design department of GOI in St Petersburg. Transmission is flat approx. 65% for 230...1000nm. Center resolution is approx. 80lpm

Long story short, here now some results using that no-focusshift lens...

Visual image (400-700nm):


Ultraviolet image (300-400nm):


Butterfly vision image (UV mapped into human visual range as blue):


Here a detail crop ... note the spider webs.



Quite amazing what the Russians have calculated without computers many years ago!!


PostPosted: Sat Sep 11, 2010 6:52 pm    Post subject: Reply with quote

Fantastic !

Regards
Catalin


PostPosted: Sat Sep 11, 2010 7:04 pm    Post subject: Reply with quote

Uh, WOW!


PostPosted: Sat Sep 11, 2010 7:10 pm    Post subject: Reply with quote

Wow! This means rarity I guess...


PostPosted: Sat Sep 11, 2010 7:12 pm    Post subject: Reply with quote

Yep, only three (3) know to exist - I have two of them and know the other owner.


PostPosted: Sat Sep 11, 2010 7:30 pm    Post subject: Reply with quote

kds315* wrote:
Yep, only three (3) know to exist - I have two of them and know the other owner.


Dang! Laughing


PostPosted: Sat Sep 11, 2010 7:33 pm    Post subject: Reply with quote

kds315* wrote:
Yep, only three (3) know to exist - I have two of them and know the other owner.
Shocked Shocked Shocked Shocked Shocked Shocked Shocked Shocked Shocked Shocked Shocked Shocked Shocked Shocked Shocked Shocked Shocked Shocked Shocked Shocked


PostPosted: Sat Sep 11, 2010 7:38 pm    Post subject: Reply with quote

Sweet Smile

What mount is the lens? How did you adapt it to the camera?


PostPosted: Sat Sep 11, 2010 7:40 pm    Post subject: Reply with quote

M42, not really complicated to mount.


PostPosted: Sat Sep 11, 2010 8:24 pm    Post subject: Reply with quote

Easy mount indeed.
Cool to have two out of three, thats a rare collection.


PostPosted: Sat Sep 11, 2010 8:33 pm    Post subject: Reply with quote

fantastic!


PostPosted: Sat Sep 11, 2010 9:47 pm    Post subject: Reply with quote

First one is a beauty!
Thanks god I'm human ( a rant should have followed but it's not my thread).


PostPosted: Sat Sep 11, 2010 10:00 pm    Post subject: Reply with quote

Gosh, what crappy results, couldn't you find a sharper lens to take this with?
Laughing

Simply fantastic, Klaus! Shocked Cool


PostPosted: Sun Sep 12, 2010 1:46 am    Post subject: Reply with quote

Thanks, I'm still in shock myself... Wink


PostPosted: Sun Sep 12, 2010 3:41 am    Post subject: Reply with quote

Fantastic photos. Is it possible to take a photo of the lens itself?


PostPosted: Sun Sep 12, 2010 3:45 am    Post subject: Re: Russian Mars lens meets Rudbeckia fulgida Reply with quote

kds315* wrote:
Well, some long time ago I was able to "liberate" the last two surviving multispectral quartz fluorite lenses from the russian mission to Mars.
kds315* wrote:
Yep, only three (3) know to exist - I have two of them and know the other owner.


Plus the ones in space, in pieces in space, or on Mars, right? Wink


Do you know the history for yours? Ie, if they were made as spares for the missions, or as engineering/test samples?


PostPosted: Sun Sep 12, 2010 4:25 am    Post subject: Reply with quote

I'd also be curious to know if you have more info on them.


PostPosted: Sun Sep 12, 2010 7:17 am    Post subject: Reply with quote

Fantastic pictures.
Is it possible see some pictures of lens?


PostPosted: Mon Sep 13, 2010 4:19 am    Post subject: Reply with quote

Klaus

Does your colloquial english cover OMG! because OMG



patrickh


PostPosted: Mon Sep 13, 2010 7:22 am    Post subject: Reply with quote

Yes, I know what OMG means Patrick Wink

If these were engineering samples I doubt, as they have regular serial numbers,
I would guess they were backup lenses. How many have been lost in space is not known
to me, there were Mars flights 2,3,4,5 and such cameras were used in each. (I found
NASA documents proving this)

Lens data + pictures are here: http://www.macrolenses.de/ml_detail_sl.php?ObjektiveNr=323



PostPosted: Mon Sep 13, 2010 7:56 am    Post subject: Reply with quote

The piece of paper sais it has >65% of light to go through... This means no coating at all.


PostPosted: Mon Sep 13, 2010 8:07 am    Post subject: Reply with quote

That reasoning I don't understand; transmission is determined by the transmission of the substance first (glass, quartz, fluoride etc.) PLUS the air-substance reflectivity losses. Since I don't know how it is built internally, the surgace + internal losses cannot be exactly determined. But I would guess from how it looks that is is uncoated indeed.


PostPosted: Mon Sep 13, 2010 8:19 am    Post subject: Reply with quote

Very sharp images, Klaus.
What I don't understand is, how could this lens get back from Mars? As far as I can recall, no space probe ever came back to earth from Mars. But I could be wrong of course.


PostPosted: Mon Sep 13, 2010 9:29 am    Post subject: Reply with quote

It was a backup lens Orio, never everything came back from Mars yet!


PostPosted: Mon Sep 13, 2010 7:50 pm    Post subject: Reply with quote

Well, I tried to find some info... not much, but at least something...

Уфар - or Ufar - was a family of lenses, which had optical scheme (at least majority of them):

1-1-1 | 3-1

this is Уфар-2 (52/2.8 )


a bit similar to old (non-thorium) version of Super Takumar 50/1.4:



Anyway, Уфар-2 had quite high resolution - peak at 70 lines and like other "Ufars" it was designed for UV photography. While "Ufar" family were medium speed lenses for UV photography, there was also "Uf" (Уф) family of lenses, which were also designed for UV photography, but they were slower. Their optical scheme was 1 | 3-1.

I'd like to see bokeh of this special optical design Smile