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 reducer for my 12" TPO RC - any recomendations?

Astrophotography Optics
  • Please log in to reply
2 replies to this topic

#1 pmacaree

pmacaree

    Lift Off

  • *****
  • topic starter
  • Posts: 2
  • Joined: 15 Sep 2015

Posted 04 May 2021 - 11:56 AM

Hi all,

 

I want to use my 12" TPO RC for astrophotogrpahy using a sensor diagonal of 28.35mm (I also want to use OAG) so I'm sensitive to the need for a large image circle from the reducer. My favorite would be a 0.75 reducer but would look at anything between .8 and .5. The reducers suitable for an RC I've come across generally provide a small image circle of 15mm or so which won't do the trick.

 

The only reducer I've found right now is the "TS-Optics Optics 2" CCD Reducer 0.67x for RC & flatfield telescopes" from Teleskop service in Germany, I'm not sure if there is a US distributor or its quality.

 

Any suggestions? 

 

Paul

https://www.astrobin.../users/paulmac/


Edited by pmacaree, 04 May 2021 - 01:59 PM.


#2 barbarosa

barbarosa

    Mercury-Atlas

  • *****
  • Posts: 2,961
  • Joined: 11 Apr 2010
  • Loc: 139 miles W of the Awahnee Hotel

Posted 04 May 2021 - 12:06 PM

https://www.primaluc...for-rc-gso.html  

 

"perfect for sensors up to APS-C format (illumination up to 29 mm). The 0,67x reducer for RC GSO has an easy connection to the telescope via 2" barrel and an optimal working distance from the M48x0.75 thread to the camera sensor is 85 mm - enough space for accessories like off-axis guider or filter wheel. 2" filter thread at the telescope side."


  • pmacaree likes this

#3 stobiewankenobi

stobiewankenobi

    Mariner 2

  • -----
  • Posts: 256
  • Joined: 25 Apr 2019
  • Loc: Laguna Beach, CA

Posted 04 May 2021 - 01:03 PM

Hi all,

 

I want to use my 12" TPO RC for astrophotogrpahy using a sensor diagonal of 28.35mm (I also want to use OAG) so I'm sensitive to the need for a large image circle from the reducer. My favorite would be a 0.75 reducer but would look at anything between .8 and .5. The reducers suitable for an RC I've come across generally provide a small image circle of 15mm or so which won't do the trick.

 

The only reducer I've found right now is the "TS-Optics Optics 2" CCD Reducer 0.67x for RC & flatfield telescopes" from Teleskop service in Germany, I'm not sure if there is a US distributor or its quality.

 

Any suggestions? 

 

Paul

https://www.astrobin.../users/paulmac/

Hey there. 

 

I have the TPO 16" RC, and have this reducer https://optcorp.com/...-m68-connection. It supports up to full frame sensors. 


  • pmacaree likes this


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





Also tagged with one or more of these keywords: Astrophotography, Optics



Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics