Old Takumar 135mm f3.5 M42 lens

[Coco]

Had some fun with my old Takumar lens, it actually comes into focus quite nicely on my Atik manual filter wheel.

2 panels of only just half hour each... I have hardly seen a clear night in months

Still this setup is extremely cheap and effective.. and quick!

[baggywrinkle]

Very nice...

[Martin-Devon]

Very impressive shot - even more so considering there's just 1 hour of data here. These CCD/DSLR lens combinations are looking mighty interesting....
 

Martin

[steppenwolf]

Looking very good, Guy - lovely wide field.

[Gina]

Lovely   These SMC Takumar lens are first rate

[Coco]

Lovely   These SMC Takumar lens are first rate

I used to use these with my MK5D years ago, I have the 50/1.4 50/2 135/3.5 200/4   , I saw your post a while back and thought I really must try this

I have to admit although its not an LRGB image I am impressed with how flat the field is..

[Psychobilly]

I used to use these with my MK5D years ago, I have the 50/1.4 50/2 135/3.5 200/4 , I saw your post a while back and thought I really must try this

I have to admit although its not an LRGB image I am impressed with how flat the field is..

Nice set of "Taks" you have there Guy

With the smaller chip your only using the central portion of the lens image circle and these were designed for 35mm film. ..

Imagine what Medium Format glass could do....

Peter...

Sent from my GT-P7300 using Tapatalk 4

[grimble61]

he he thats cool , dont you just love 135mm and 314l . i also have 135 mm super takhuma attached to my 314l via a manual filter wheel on home made mounting plate with auto focus and 50mm guide scope on sw eq6

10min nellys nose big strech. in HA7nm, lots of cloud aroud so just playing really.

love W I D E FI I E L D.

Graham

[swag72]

I like that Guy - What's the back focus on these len's?

[andyo]

great shot Guy 

[Coco]

I like that Guy - What's the back focus on these len's?

Thanks Sara.. Its 45.5mm .. Spot on for my kit

[HenryNZ]

Hi

Can you please tell me what adapter is needed to get M42x1 of Pentax lens to interface with M42x0.75 thread, and get the requisite spacing?

Thanks

[gorann]

Takumars can do colour too. Here are two DSLR images (Canon 60Da) with my Takumar 135 f/2.5 and Takumar 200 f/4 from mid November (reprocessed with the Adobe Raw plugin in Photoshop and a bit better (less noise)  since I posted them in November).

Stopped down to f/3.5 and 4.5, respectively, 5 x 120s at ISO 2000. On NEQ6, did not bother with guiding.

Have to try them more. The total price for both was 300 USD on ebay. Plenty of M42-EOS adapters for a few dollars on ebay.

[happy-kat]

Hi

Can you please tell me what adapter is needed to get M42x1 of Pentax lens to interface with M42x0.75 thread, and get the requisite spacing?

What are you trying to connect the M42 lens to?

There are lots of adaptors but I am confused by the m42 to m42.

[HenryNZ]

@habby-kat:

The Takumar lens has 42mm x 1 mm pitch thread

Standard T-thread that Atik and other astro gears use is 42mm x 0.75 mm pitch

I presume some kind of adapter is required to fit the Takumar lens to the astro CCD?

[gorann]

Regarding an M42 0.75 to 1.0 pitch adapter, a quick search on ebay gave this:

http://www.ebay.com/itm/T2-M42-0-75-T-Mount-Telescope-Lens-To-M42-M42-1-Screw-Mount-Adapter-T2-M42-/231618254974

[HenryNZ]

Thanks Gorann

[Merlin66]

Goran,

That eBay adaptor seems to be the T2 lens to a M42 thread - you need the opposite to mount a Pentax lens......

[Uranium235]

Nice to see you get an image after such a long time out of action 

[laudropb]

Very nice images.

[Merlin66]

http://www.ebay.com.au/itm/T-T2-Male-to-M42-Female-Mount-thread-lens-Adapter-converter-Ring-T-M42-42mm-42mm-/251691460694?hash=item3a99fae856:g:9-AAAOSwBLlVMp5R

This seems to take the M42 Pentax thread to a male T2 Thread......

[gorann]

Goran,

That eBay adaptor seems to be the T2 lens to a M42 thread - you need the opposite to mount a Pentax lens......

Sorry, but what about this one:

http://www.ebay.com/itm/T-T2-Male-to-M42-Female-Mount-thread-lens-Adapter-converter-Ring-T-M42-42mm-42mm-/291286167861?hash=item43d2023135:g:h7EAAOSw0vBUZoTQ

It says:

Male screw thread: 42mm (T thread, 0.75mm thread pitch size)

Female screw thread: 42mm (M42 thread, 1mm thread pitch size)

[HenryNZ]

I have just won an auction for this lens. The adapter aside what spacer do you need to get the back focus right? I use an 314L+ too. Thanks

[Merlin66]

The spacer "stack" distance should equal 55mm (standard SLR body spacing) to the CCD from the rear face of the lens.

The back focus of the 314L (front flange face to CCD) is 13.5mm so that leaves 41.5mm of "spacer"

HTH

(I made up my own version using a Pentax to T-thread then a Baader T thread to 1.25" variable focuser and left the 1.25" nosepiece on the ATiK314L)

[HenryNZ]

Hi 

my takumar 135 lens and adapter has arrived, but simply cannot find a way to mount it on a dovetail securely. I have tried to use a finder ring with set screws but it does not hold the lens secure enough. How do you go about mounting the lens to the mount? Any suggestions appreciated.