aperture and magnitude



What is the magnitude limit for viewing with a 4.5 Dob? How does this
compare with an 8 inch scope?

Clear skies.
Bruce

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Relevant Pages

  • Re: 8" SCT v. 11" SCT
    ... 12" Dob, which is more than just suggesting it as "an option". ... Sorry Stephen, NO weeds in San Diego, I am not lost, I know where I am. ... I cannot say whether it makes more sense for the original poster to buy ... there is a reasonable amount of WOW when switching from an 8 inch scope ...
    (sci.astro.amateur)
  • Re: Dob with tracking?
    ... a Dob but I am curious about something in the 12 range with tracking. ... For what a true tracking Dob will cost you (Obsession, Starmaster), I ... Another thing to consider, regardless of the price point your shooting for, is the kind of skies you'll be observing under. ...
    (sci.astro.amateur)
  • Re: Back Issues of Rods Skywatch Newsletter are Back!
    ... Hmmm. ... Sounds like it might be a very nice companion to e.g. a 10" Dob. ... Under my light polluted skies I have two major problems identifying targets - am I looking in the right place? ...
    (sci.astro.amateur)
  • Re: Did I really see ngc1973
    ... I've seen from my suburban-like mag 4.5 skies in a 10" dob. ... From dark sites it's visible in my Tele Vue 76. ...
    (sci.astro.amateur)
  • Re: Does the ETX 70 AT share the same mount as the ETX 90?
    ... I had an ETX-70 and I have several other scopes including an 8 inch DOB. ... An 8 inch scope gathers 11 ...
    (sci.astro.amateur)