10" or 12" dob for red zone
Posted 10 February 2013 - 04:14 PM
Posted 10 February 2013 - 04:19 PM
The difference isn't going to be where you live but really what you want to deal with weight-wise. A 12" dob (solid tube) is listed on Orion's website @ nearly 83#. I'm sure a 10" is a little better than that.
Size matters for resolving detail but if it hinders you dragging it outside.. and I realize you think 80# won't bother you... trust me, it gets old and will detract from you using your scope. I'm military, healthy, and it caused me to build a ROR shed so I didn't have to setup constantly!
Posted 10 February 2013 - 04:23 PM
Posted 10 February 2013 - 04:26 PM
Posted 10 February 2013 - 04:34 PM
Posted 10 February 2013 - 04:48 PM
Posted 10 February 2013 - 05:32 PM
Posted 10 February 2013 - 05:35 PM
Posted 10 February 2013 - 05:50 PM
Posted 10 February 2013 - 06:00 PM
Posted 10 February 2013 - 06:07 PM
Im lazy and like to just pull it out and look.
then I'd get a 8in f6. it will show you a lot with little effort, a nice eyepiece sitting height.
Posted 10 February 2013 - 06:17 PM
Posted 10 February 2013 - 07:16 PM
With my 80mm I get to be lazy and just pick it up. With the dob I will just roll it out
Sometime in the future you may decide to take your scope, load up your car or truck and head out for some clear, dark skies. This is when the 12 inch longer Tube of the 12 inch can be a problem. A 10 inch F/5 fits across the back seat of most cars, the large, longer tube of the 12 inch F/5 can be a problem.
Posted 10 February 2013 - 07:37 PM
Get the 12". The extra aperture is definitely worth it, if the size and weight is not a problem.
You'll also want Orion's SkyGlow filter (the imaging filter is a little better) and their UltraBlock filter. The UltraBlock filter is especially useful and effective for a wide variety of targets.
Flocking is really only useful for reducing the damage done to your views by stray light entering the tube. A homemade "dew shield" extending the tube by an exta foot or so will be just as helpful. Having a spot to observe where you will be shielded from direct light will be essential. If you don't have one, plan to drape something over your head or wear something with a hood to block light from your eyes.
Aperture rules when it comes to cutting through light pollution for everything except galaxies. No filter but dark skies will help with those. Your 12" will definitely not be wasted, though.
Posted 10 February 2013 - 07:45 PM
Posted 10 February 2013 - 07:57 PM
Posted 10 February 2013 - 08:21 PM
Posted 10 February 2013 - 11:36 PM
Posted 11 February 2013 - 02:04 AM
Posted 11 February 2013 - 03:37 PM
Posted 11 February 2013 - 04:14 PM
For all of you who have stored your dobs in a detached garage, I assume that cool down time is not an issue or if it is its a small one. Am I right?
Storing a scope in a detached garage helps, but by no means does it eliminate cool-down time. Even with the doors wide open, structures store a lot of heat.
Posted 11 February 2013 - 04:41 PM
Posted 11 February 2013 - 05:02 PM
Posted 11 February 2013 - 07:25 PM
As for your OP, you will be very happy with a 10-inch, but a 12-inch does more and noticeably so on galaxies and nebulae. Especially at dark sites, and believe me, you'll want to go to dark skies at least a couple times a year. If you can afford it, I would go for the 12-inch. If not, get a 10-inch and you'll still have a good telescope for both Solar System and deep sky objects.