I developed this handy Astrophotography rig simulator for Bintel that ties in a few different calculators I've been using online, particularly the ideal sampling measurement and the Field of View calculation and preview. It works for scales from planetary to deep sky with a few common preview targets for scale. All written in PHP and HTML5.
This link pre populates one of my setups (Celestron 9.25" Edge HD with Hyperstar and QHY12 CCD) but you can change the inputs to whatever you like to test your setup.
https://www.bintel.com.au/tools/astr...&target=carina