Jump to content

  •  

CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.

Photo

We need T-mounts for mirrorless cameras that are short

  • Please log in to reply
5 replies to this topic

#1 RichA

RichA

    Apollo

  • *****
  • topic starter
  • Posts: 1,138
  • Joined: 03 Jun 2010
  • Loc: Toronto, Canada

Posted 14 February 2020 - 09:47 PM

Most of the T-mount adapters for mirrorless cameras are deep, designed to make the mirrorless camera mount-sensor separation the same as old DSLRs, much longer.

I think the new full-frame Nikon mirrorless Z-cameras have a mount flange to sensor depth of 18mm or so.  This compares with 49mm for the average sensor to mount distance.  What I've found is that in-travel in focusers doesn't leave much room with these long T-mounts used with mirrorless cameras.  What I would like (even though in some instances I'd have to use an extension tube, depending on the scope) would be a low-profile T-mount system like you have with the DSLRs.  Here is a comparison of the T-mount for a m4/3rds mirrorless camera and a Nikon DSLR system:

 

 

Attached Thumbnails

  • P1460336.JPG


#2 rk2k2

rk2k2

    Vostok 1

  • -----
  • Posts: 144
  • Joined: 10 Jun 2018
  • Loc: Cool, CA

Posted 14 February 2020 - 11:01 PM

I'm not positive if it was for my m4/3 or my Nikon, but I bought a 'low profile' adapter- I can't seem to find it right now but I'm almost positive it was for the m4/3- the Nikons are already low profile.  In fact, now that I remember, it was so I could slide my PL7 directly into a Baader click lock on my VC200l and be able to adjust the right distance (63.5mm?) from the focal reducer.  I think I googled something like 'micro 4/3 low profile adapter'.  It was like $40 vs the regular cheap ones you can get off Amazon for $10. ... in case that is what you're talking about.  I'm on short break from imaging but I'll look around later in case no one answers on identifying the part

 

Yeah, I found the box but the actual adapter is nowhere to be found.  In case what you are looking for is what I'm thinking, mine is called a Wide and Short T-minus Ring (for micro 4/3).  You can get them in either 42mm or 48mm thread.  The 48mm:

 

https://www.amazon.c...ASIN=B07NCNWL3Y

 

They are available cheaper (about $25) elsewhere


Edited by rk2k2, 14 February 2020 - 11:28 PM.


#3 B 26354

B 26354

    Apollo

  • -----
  • Posts: 1,159
  • Joined: 05 Jan 2017
  • Loc: Southern California semi-desert (NELM mag 5.3)

Posted 14 February 2020 - 11:25 PM

Maybe this is it?...

 

https://www.telescop...ss-cameras.html



#4 Traveler

Traveler

    Gemini

  • *****
  • Posts: 3,401
  • Joined: 19 Aug 2007
  • Loc: The Netherlands

Posted 15 February 2020 - 12:27 AM

Or maybe this one from Baader:

https://www.baader-p...ultrashort.html

 

Optical length = 2mm 



#5 B 26354

B 26354

    Apollo

  • -----
  • Posts: 1,159
  • Joined: 05 Jan 2017
  • Loc: Southern California semi-desert (NELM mag 5.3)

Posted 15 February 2020 - 11:09 AM

Or maybe this one, which is supposedly made specifically for Canon mirrorless cameras... as the other one that I posted is for mirrorless Nikons:

 

https://www.telescop...ss-cameras.html



#6 mmalik

mmalik

    DSLR camera modifications

  • *****
  • Vendors
  • Posts: 10,130
  • Joined: 13 Jan 2012
  • Loc: USA

Posted 15 February 2020 - 07:52 PM

My attempt at low profile adapter.... Regards




CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.


Recent Topics






Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics