Advice on a c-mount adapter

[Twisted Lip]

This is more of an equipment question but I can't think where else to put it so have settled for this forum

This week at SGLIX I'm playing around with a new bit of kit (180degree fisheye lens) and some existing kit but I'm a bit stumped trying to put the lens onto a specific camera. The lens has a standard c-mount but the only way of attaching to the camera is via a standard 1.25" filter thread (which I think is M28.5). Now there are plenty of male c-mount to 1.25 nosepiece adapters (I have one, and similar adapters) but for the life of me I can't find anything that is female c-mount to male m28.5 (i.e. 1.25" filter thread).

Anyone come across anything like this before or have any ideas? Even a female c-mount to female 1.25' nose piece might work.

Cheers

Will

[michael8554]

i've seen your filter thread size quoted, but also 1.125" x 42TPI

But doesn't help you find your adapter I'm afraid.

Michael

[Twisted Lip]

No its definitely a weird one and not something I've come across before. I'd be tempted to make something myself but I'd be going back to CDT classes (showing my age there!) since I last used threading dies! lol

 

[opticalpath]

I haven't tried it, but you might be able to do it with two adapters:  a c-mount female to T-thread male, plus a T-thread female to 1.25" male.  For example:

http://www.ebay.co.uk/itm/Brand-New-T2-T-Mount-Male-to-C-Mount-Female-camera-adapter-/251175321713?hash=item3a7b374071:m:mfQNmf33aeyt0wne7jgl1oA

http://agenaastro.com/blue-fireball-t-t2-female-m28-5-male-thread-adapter-t-03.html

 

A cheap DIY alternative could be to buy an inexpensive c-mount lens to DSLR/ Micro 4/3 camera adapter and Araldite on to this an old 1.25" threaded filter cell with the glass removed 

http://www.ebay.co.uk/itm/C-mount-movie-16mm-1-2-Lens-To-Micro-M-4-3-43-M43-Adapter-for-Olympus-Panasonic-/322016427684?hash=item4af9acbea4:g:gLkAAOSwGvhT9CWZ

 

Adrian

 

 

[Twisted Lip]

Thanks Adrian, I'm tempted by option number two! lol Its just a test to see if I can put them together to be honest so if it works a better (perhaps custom built solution) could be made.

Cheers

Will

[carlettiG]

Hi,

Here is the good adpater(5mm long). I need it to link the MiniGuiderScope QHY with a StarAid and allow to reach focus(many other similar adapter had 8.3 to 9.0 mm long(included a ring of 5mm) and I cannot reach focus with them.

https://agenaastro.com/blue-fireball-c-cs-female-thread-m28-5-male-thread-adapter-v-05.html

Blue Fireball C / CS Female Thread to M28.5 (1.25" Filter) Male Thread Adapter # V-05 r Price: $19.95