Author Topic: 10" is my new favorite size.  (Read 128 times)


  • Active Astronomer
  • ***
  • Posts: 127
  • Activity:
  • Reputation: +0/-0
    • View Profile
10" is my new favorite size.
« on: December 24, 2017, 02:20:47 PM »
I've looked through 8" and 10" scopes.  The light grip difference is quite noticeable even on galaxies.  When you are set up at a dark sky site trying to select out dust lanes in M31, you may wish you had the 10" rather than the 8", unless you've got good eyes.

The 10" is heavier than the 8", but that I can load the 10" to a car just fine.  Wheels are a must for carrying around in 1 piece.

Now the 12".  Yes, see a bit better still, however, the weight really shoots up.  8" is 40 lbs.  10" is 55".  12" is 100 lbs, or at the OTA is as hefty as the complete 10".  Additionally an adjustable height seat really becomes crucial with all the 12".Now when will conical mirrors become mass produced?My friend saw a 12" on Craigslist for $400.  He doesn't have cash to purchase today, but I told him to go see it in person and tell me how heavy it is.  He said he wants an 18", and he wants a truss with wheels.  He doesn't need a strong 12".

I suspect a 30mm ES 82* at a 12" f5 dob would give a spectacular view of M110, M32, M31 and dust lanes in the same area, better than the 10" would.  However, I would not want to transfer it.  I suspect 10" will be good enough.  I like my 1.25" set, in which they all are the same weight.