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

Looking for a more solid DSLR attachment

  • Please log in to reply
5 replies to this topic

#1 archer1960

archer1960

    Messenger

  • *****
  • topic starter
  • Posts: 475
  • Joined: 26 Jul 2011
  • Loc: Southern New England

Posted 08 November 2019 - 11:04 PM

I have a Feathertouch 3015 focuser and a 2" extension nosepiece for my Canon DSLR. I am finding that the camera sags just a bit when aiming at a low altitude. So I'm looking for a threaded adapter that will allow me to connect the camera to the focuser completely with threaded connections, rather than a nosepiece that I tighten down set screws to hold in place, to eliminate that source of mis-collimation.

 

Has anybody seen such a beast (or combination of) that will give me a rigid connection?

 

Thanks!

D



#2 petert913

petert913

    Gemini

  • *****
  • Posts: 3467
  • Joined: 27 May 2013
  • Loc: Portland, OR

Posted 09 November 2019 - 12:21 AM

Is this for the 4" Meade you have in your signature?  There should be direct-screw in adapters that don't rely on compression rings.  Not sure about the feather touch, but that's how my Astro-Tech refractor focuser works.



#3 wrnchhead

wrnchhead

    Apollo

  • *****
  • Posts: 1140
  • Joined: 28 Aug 2017
  • Loc: NE Kansas

Posted 09 November 2019 - 12:28 AM

I am sitting around bored and I looked at Feathertouch's website. It seems they don't have a 42mm T thread adapter for a 3" focuser. But that hardly seems possible. 



#4 Chuckwagon

Chuckwagon

    Viking 1

  • *****
  • Posts: 771
  • Joined: 23 Jan 2008
  • Loc: Orem, Utah, USA

Posted 09 November 2019 - 01:57 AM

Perhaps the Stellarvue SFA-M75M48F48-004 adapter would work.  That, in conjunction with a Canon M48 T-Ring (William Optics make one) would give a threaded connection to your camera.  (Assuming your focuser has the M75 threads into which the 2" compression ring is threaded, and you remove the compression ring.)



#5 the Elf

the Elf

    Surveyor 1

  • *****
  • Posts: 1816
  • Joined: 06 Sep 2017
  • Loc: Germany

Posted 09 November 2019 - 06:25 AM

On the camera side I can recommend the Baader protective T-ring. Almost zero play, 48 and 42mm female thread and you can place a filter in the ring. It is 12mm long.

According to this link:

http://starlightinst...5&product_id=54

is has a M75X1 Female Thread at the draw tube. Can you confirm? If so, this brings you to M68x1

https://www.teleskop...0-Auszuege.html

This one brings you to M48 male that fits the T-Ring

https://www.teleskop...ussadapter.html

Note: you need a rotator unless there is one between scope and focuser. Here is one:

https://www.teleskop...8x1-thread.html

If you are on a budget and don't mind the small screws the camera can also be roated by the Baader T-ring, loosening 6 tiny hex screws and saving some back focus.



#6 archer1960

archer1960

    Messenger

  • *****
  • topic starter
  • Posts: 475
  • Joined: 26 Jul 2011
  • Loc: Southern New England

Posted 09 November 2019 - 01:42 PM

Is this for the 4" Meade you have in your signature?  There should be direct-screw in adapters that don't rely on compression rings.  Not sure about the feather touch, but that's how my Astro-Tech refractor focuser works.

No, it's for my AT-10RC




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