Where can a get a M42 adapter.....

[lukebl]

Anyone know where I can get a slimline adapter with an M42 x 0.75 thread to connect a camera to a filter wheel?

I have one of these, but the thread on one side is too deep. If I screw it into the filter wheel, it just pushes up against the wheel,  and if I screw it into the camera it only goes half-way in. I need it so that there's a narrow thread each side

 

 

[tooth_dr]

Personally I’d cut off the extra threads with a hacksaw 

[tomato]

+1 for the hacksaw suggestion, slip a collar made up of a plastic strip or whatever you have that’s a uniform width over the threads to help you cut through evenly, working around the circumference and it will do the job.

Use a junior hacksaw if you have one.

[vlaiv]

Or just use spacer that will shorten available thread so it does not protrude that much into filter wheel?

There are also these:

https://www.firstlightoptics.com/zwo-accessories/zwo-t2-male-to-male-adapter.html

https://www.firstlightoptics.com/adapters/baader-t2-t2-inverter-ring.html

https://www.firstlightoptics.com/adapters/astro-essentials-t2-to-t2-female-to-female-adaptor.html

[tooth_dr]

17 minutes ago, vlaiv said:

Or just use spacer that will shorten available thread so it does not protrude that much into filter wheel?

There are also these:

https://www.firstlightoptics.com/zwo-accessories/zwo-t2-male-to-male-adapter.html

https://www.firstlightoptics.com/adapters/baader-t2-t2-inverter-ring.html

https://www.firstlightoptics.com/adapters/astro-essentials-t2-to-t2-female-to-female-adaptor.html

You may have missed Lukes last thread, space is paramount

The inverter ring is a good shout to minimise space loss

Edited December 13, 2021 by tooth_dr

[vlaiv]

16 minutes ago, tooth_dr said:

You may have missed Lukes last thread, space is paramount

The inverter ring is a good shout to minimise space loss

Indeed, not up to speed with whole issue - I thought that thread being too long is main problem and that solves easily with spacers / distance rings (I have similar issue with my filter drawer that is rather thin and longer thread just protrudes inside and stops drawer from sliding in/out properly).

[david_taurus83]

2 hours ago, vlaiv said:

Indeed, not up to speed with whole issue - I thought that thread being too long is main problem and that solves easily with spacers / distance rings (I have similar issue with my filter drawer that is rather thin and longer thread just protrudes inside and stops drawer from sliding in/out properly).

Is that the TS one by any chance? I cut the offending side off the drawer with a Dremel so it wouldn't catch the threads when removing. I think they have since resigned it.

[lukebl]

Thanks for the input folks. And thanks for those links, @vlaiv. I’ll try the hacksaw option first, and if that fails I’ll buy a new one.

Edited December 14, 2021 by lukebl

[michael8554]

This one has 3mm of thread each side and is 8mm thick:

https://www.ebay.co.uk/itm/203704551826?chn=ps&_trkparms=ispr%3D1&amdata=enc%3A1COiqsyB6R6aekIraaZtsgQ0&norover=1&mkevt=1&mkrid=710-134428-41853-0&mkcid=2&itemid=203704551826&targetid=1394639519947&device=c&mktype=&googleloc=1006463&poi=&campaignid=15278604175&mkgroupid=135429446288&rlsatarget=pla-1394639519947&abcId=9300698&merchantid=6995734&gclid=Cj0KCQiA5OuNBhCRARIsACgaiqV_CCkBTBv3X1OYfD1BFg4CNG66a-uXj_gB3Kv2OVGWxwUv2YnT7kQaAi2aEALw_wcB