Jump to content


CPC 800 piggyback weight limit?

  • Please log in to reply
2 replies to this topic

#1 Larry Hansen

Larry Hansen

    Mariner 2

  • -----
  • Posts: 265
  • Joined: 21 Jul 2009
  • Loc: MIchigan - Nevada in winter

Posted 26 January 2013 - 12:16 PM


Could anyone advise me on the piggyback weight limit of a CPC800? I am looking to mount a Lunt Ls90 on my CPC800 in the future. The total piggyback weight that I am looking at would not exceed 12 pounds. Has anyone ever tried this much weight on a CPC800? And if so, how did it work. I would really like to try this solar scope but I do not want to invest in another mount for it.

Thank You,

#2 A. Viegas

A. Viegas


  • *****
  • Posts: 1119
  • Joined: 05 Mar 2012
  • Loc: New York City/ CT

Posted 26 January 2013 - 02:33 PM

Hi Larry,

I have mounted a C80ED and imaging camera with 6 lbs of scopestuff weights on a bottom rail. I estimate that is about 14-15 lbs including camera and/or 2" eyepieces. In Alt-Az I have found this combination to be problematic. With poor tracking, yet I believe this is due primarily to improper balance. I find it very difficult to achieve proper balance as the weights I have do not protrude far enough to offset the refractor. I have since removed the C80ED and i now use a PST on top with about 3 lbs of weights on the bottom rail and find tracking to not be impacted at all.

I have read of other users in fact running with much more than 10-15lbs of weight but i suspect they have very good balance. For me, with the first combination I could balance maybe in 30-70 degree in elevation, but at 90 or 0 degrees it was unbalanced. Perhaps on a wedge the balancing issues would be easier??


#3 1965healy


    The Snarkster

  • *****
  • Moderators
  • Posts: 9110
  • Joined: 23 Jun 2007
  • Loc: San Antonio, TX

Posted 26 January 2013 - 06:11 PM

I've had an 80mm refractor, a 60mm finder, a canon dslr and a 2" diagonal with binoviewers on mine w/o problems. Pier mounted on a wedge. With the exception of the bike, the boats and the car in my signature most of it lives on the scope!

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.

Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics