I am finally getting close to pulling the trigger on some new gear. Just want to make sure I'm on the right track here regarding my upgrade plan.
I currently have a 6in Cave Reflector (750mm FL) on an Orion Astroview Mount w/ the Motor Drive Kit. However, the the mirror needs to be refinished and the focuser is crap. I have an ASI120mc-s for planetary imaging and that has been fun, but the end goal (for me) is narrow band imaging.
I live in Bortle 8 /9 light pollution with a heavy gradient due to a nearby grocery store (<.1 miles away). Travelling to a dark site right now is near impossible with a toddler and baby at home. So being able to do this from my backyard is important.
My plan is to buy an Orion Sirius ED80 EQ-G (mount and refractor) to start with. Long term, I want to pair it with an ASI183mm-pro, Astronomik Ha and OIII filters, and a respective autoguiding setup.
I also have an older DSLR Canon Digital Rebel, but it has its challenges with no live view and no Backyard EOS. Its also too heavy for the for the focuser on the 6" reflector.
The idea is to start with the mount (mostly for the GOTO capability) and learn as I go as I purchase new items. I'd like to be able to mix and match gear as I go as well as leave room to upgrade.
My questions are:
1) Is the ED80 good enough or should I get the mount without the ED80 and go for a WO Z61 and Flat 61 Corrector (or something similar). My main concerns are with the ability to focus adequately. I could upgrade the ED80 focuser to a 10:1 dual speed for not too much more if I feel I need it.
2) How accurate is the GOTO on the Sirius? I can't find anything via star hopping currently in the light pollution. Would the small FOV with the ED80 / ASI120mc-s be too small of a FOV to locate planetary nebula?
3) Is the ASI183mm a good match for short FL scope? The image scale with the ED80 is about .83"/pixel (stock) and 1"/pixel with the .85 Focal Reducer / Coma Corrector. Would the ASI1600mm-pro be a better fit? I've looked at both and think the 183 is a better match.
4) Which narrowband filter would you get first, considering that I would likely be going after planetary nebula to start?
5) Am I going to be kicking myself in 5 years wishing I had got an Atlas instead of a Sirius?
So ... thoughts on this plan? Want to make sure I'm not leaving out any important bits or making a mistake in my thought process.