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35KP 120mm f1.8
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PostPosted: Fri Jun 17, 2016 12:05 pm    Post subject: 35KP 120mm f1.8 Reply with quote
Just bought this,is it the planar type?



PostPosted: Fri Jun 17, 2016 1:40 pm    Post subject: Reply with quote
Not sure - i have the 140mm planar and it looks a little bit shorter and chunkier than yours.

Yours may be the pertsval design - you will see when you get it - if it is the lighter one (~600 gr) it is 4 lenses. Planar design is more heavy.
This one looks like the planar Click here to see on Ebay


PostPosted: Fri Jun 17, 2016 1:50 pm    Post subject: Reply with quote
no, teh PETZVAL type. Why not ask FIRST? Wink


PostPosted: Fri Jun 17, 2016 3:32 pm    Post subject: Reply with quote
std wrote:
Not sure - i have the 140mm planar and it looks a little bit shorter and chunkier than yours.

Yours may be the pertsval design - you will see when you get it - if it is the lighter one (~600 gr) it is 4 lenses. Planar design is more heavy.
This one looks like the planar Click here to see on Ebay


I just bought that lens.
When it arrives in a month, I will be able to compare both the 6 lens planar and the 4 lens Petzval.


PostPosted: Sat Jun 18, 2016 12:02 pm    Post subject: Reply with quote
Sigurd Ruschkowski wrote:
std wrote:
Not sure - i have the 140mm planar and it looks a little bit shorter and chunkier than yours.

Yours may be the pertsval design - you will see when you get it - if it is the lighter one (~600 gr) it is 4 lenses. Planar design is more heavy.
This one looks like the planar Click here to see on Ebay


I just bought that lens.
When it arrives in a month, I will be able to compare both the 6 lens planar and the 4 lens Petzval.


Yes, this is the Planar type.


PostPosted: Sat Jun 18, 2016 2:14 pm    Post subject: Reply with quote
kds315* wrote:
Sigurd Ruschkowski wrote:
std wrote:
Not sure - i have the 140mm planar and it looks a little bit shorter and chunkier than yours.

Yours may be the pertsval design - you will see when you get it - if it is the lighter one (~600 gr) it is 4 lenses. Planar design is more heavy.
This one looks like the planar Click here to see on Ebay


I just bought that lens.
When it arrives in a month, I will be able to compare both the 6 lens planar and the 4 lens Petzval.


Yes, this is the Planar type.


Thank you, good to know!


PostPosted: Tue Jun 28, 2016 2:22 pm    Post subject: Reply with quote
The lens has arrived but now I am even more confused instead...

One lens is called K0-120M. It is the taller one in the photos.
The other lens is called 35KN-1,8/120. It is the chunkier one. Heavier.

I thought that the names would be identical but that one was a 4-lens Petzval and the other a 6-lens planar.





PostPosted: Tue Jun 28, 2016 2:35 pm    Post subject: Reply with quote
The shorter one is the 6 element.


PostPosted: Tue Jun 28, 2016 2:51 pm    Post subject: Reply with quote
yep, left Planar type, right Petzval type. Easy to feel, Planar is much heavier!


PostPosted: Tue Jun 28, 2016 4:09 pm    Post subject: Reply with quote
why don't you use these?

Ko-120 is page 370 of the original, 363 of the pdf
http://oly43club.ru/_articles_and_books/_catalog_M42/Objektivy_Part_1.pdf


PostPosted: Tue Jun 28, 2016 4:27 pm    Post subject: Reply with quote
Catalog
http://www.old.astronomer.ru/data/telescope/manuals/ob_cat.doc

PDFs
http://www.old.astronomer.ru/data/telescope/manuals/Objektivy_Part_1.pdf
http://www.old.astronomer.ru/data/telescope/manuals/Objektivy_Part_2.pdf

Source here: http://www.astronomy.ru/forum/index.php/topic,22807.0.html


PostPosted: Tue Jun 28, 2016 8:11 pm    Post subject: Reply with quote
Thank you for the links!
I do not read Russian(?) but I read schematics and numbers Smile



calvin83 wrote:
Catalog
http://www.old.astronomer.ru/data/telescope/manuals/ob_cat.doc

PDFs
http://www.old.astronomer.ru/data/telescope/manuals/Objektivy_Part_1.pdf
http://www.old.astronomer.ru/data/telescope/manuals/Objektivy_Part_2.pdf

Source here: http://www.astronomy.ru/forum/index.php/topic,22807.0.html


PostPosted: Mon Jul 11, 2016 5:59 pm    Post subject: Reply with quote
There is also a 140/1.8 planar version I found out yesterday.
Not easy to find but today I found one in Novocherkassk, and bought it from eBay Smile



kds315* wrote:
Sigurd Ruschkowski wrote:
std wrote:
Not sure - i have the 140mm planar and it looks a little bit shorter and chunkier than yours.

Yours may be the pertsval design - you will see when you get it - if it is the lighter one (~600 gr) it is 4 lenses. Planar design is more heavy.
This one looks like the planar Click here to see on Ebay


I just bought that lens.
When it arrives in a month, I will be able to compare both the 6 lens planar and the 4 lens Petzval.


Yes, this is the Planar type.


PostPosted: Mon Jul 11, 2016 6:18 pm    Post subject: Reply with quote
Sigurd Ruschkowski wrote:
There is also a 140/1.8 planar version I found out yesterday.
Not easy to find but today I found one in Novocherkassk, and bought it from eBay Smile



kds315* wrote:
Sigurd Ruschkowski wrote:
std wrote:
Not sure - i have the 140mm planar and it looks a little bit shorter and chunkier than yours.

Yours may be the pertsval design - you will see when you get it - if it is the lighter one (~600 gr) it is 4 lenses. Planar design is more heavy.
This one looks like the planar Click here to see on Ebay


I just bought that lens.
When it arrives in a month, I will be able to compare both the 6 lens planar and the 4 lens Petzval.


Yes, this is the Planar type.


You could have asked, I have several sitting around here... Wink
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