An analysis-paralysis moment.
I need to a guide scope to pair with ASI290MM. I have 2 guide scope in mind now.
- Svbony SV165 Mini (f4 30mm) ~S$40
- Svbony SV106 (f4 50mm) ~S$100
Currently, I am still experimenting with f5 150mm Newtonian reflector, which will be upgraded to some form of refractor in the future.
Which of the 2 guide scopes should I get? Or others. Budget ~S$100.
I used astronomy.tools guidescope suitability but not quite sure how to interprete the imaging/guiding ratio. It's 1.4-ish I believe.