L series RF Lens For Astrophotography and Landscape Or do I go Macro?

[Far-Out-Dude]

I am looking for a L series RF Lens For Astrophotography and Landscape for my  R5 Mark ii.  I shoot a lot of landscape and am very interested in Astro, I would eventually like to get into some deep space stuff but that is not going to happen just yet. I am hoping someone could suggest an L-series rf lens that would be good for both? I had been looking at the 16mm RF lens but it is not a L series and I have gotten spoiled with the quality of images from my EF 100-400mm f/4.5-5.6L IS II USM Lens so I think I would like to stick with the L series, if I can afford them.

The other kinds distant thought is a RF 100mm f/2.8 L Macro IS USM Lens. I have a interest in Macro but can't kneel, squat or bend due to injuries and most of what interests me is on or near the ground so I am not sure, I would have to have a tree or a chair to use to get off the ground if I sat. I like the idea of photographing eyes, raindrops/ice droplets as they cling to a tree and other outdoor kinda stuff.

I am attaching some of my landscape shots to give you and idea of what I like to shoot, I almost always shoot from a tripod and from the sitting position as standing is quite painful for me. I am having problems uploading the ones I want, they all need to be resized and I am not good at getting them to the right size, stupid numbers again.

[justadude]

Thanks, James!  Well, 14 single shots stitched together covering roughly 220 degrees from north to south, standing right on the edge of the Lake Michigan shore.  I had to laugh at your "Since the 60's" comment because in reality, at age 10 (1966) is when my dad taught me the basics because I was obsessed with his TLR camera.  From that age I shot a few rolls every year, but didn't get serious with it until the 1980's.  I never did my developing back then, but since retirement 2 years ago, my wife convinced me to start developing (B&W and Color), and now I'm wondering why I never did this in the past.  The only pro work I do these days is mostly sporting events (finish line photographer at marathons and triathlons) plus the random business sales (freelance for a few local Michigan magazines).  It has slowed down over the past 10 years simply because anyone with a cell phone calls themselves a photographer, and gives their photos away only for recognition.  

As for the dark sky problem, have you looked at light pollution maps for random pockets of dark skies in your area within an hour or two of where you live?  I live in a very light polluted area, but there are dark sky spots all over if I want to drive for an hour.  

It's nice that you share the hobby with your spouse.  My wife and I met through a local Flickr group where 50 - 100 of us would do photowalks in the city and surrounding areas.  So yes, my wife shares the hobby as well.  I always shot Pentax (still do at times with an older DSLR) she always shot Olympus.  We now both shoot Canon... mostly so we can borrow lenses from each other.  

[Far-Out-Dude]

Problem I worry about where I live is finding dark enough places to get good images from.

[justadude]

It's the same here in the western half of Michigan.  The online Light Pollution Map helps quite a bit.  You can find random dark areas that you didn't even think of within a couple hour drive of most places.