|
Hi Matt,
I have attached a spread sheet that I created that may help you.
I have input the data for your scope, ie 200mm aperture with a Focal ratio of F10 and FL of 2000mm.
I have no experience with focal reducers, and the results of using one for observational work, maybe someone else that is an experienced observer with a scope similar to yours could jump in and advise you on that.
Don't be too worried about magnification, it really is irrelevant when trying to observe quite large, diffuse objects. When observing P/N you will likely need more magnification, I find that the 130x with 82 degree fov of my 14mm series 4000 Meade UV does a top job, even on more condensed P/N and galaxies. Occasionally I go to 203x with a 9mm Nagler as some P/N and galaxies seem to take the extra magnification quite well, however I am using a 16" F4.5 primary to collect the photons.
In my humble opinion it is far better to observe a smaller, brighter and more detailed image than a larger less well resolved and dimmer image. I suppose this come back to the aperture of your scope. Your C8 is far more portable and gives you options as to where you can use it, my 16 is permanently mounted in an observatory, definitely not portable.
Matt I have been unable to attach my excel spreadsheet on telescope data, I will attach it to a PM and email it to you.
Regards
Trevor
|