So, in a Play-By-Post I'm a part of the following occurred to "my character" in game, as he's reasonably inexperienced with magic (yeah, that's totally my excuse, the fact that I didn't think of this until now despite playing the game for 2 years has nothing to do with the matter!);
So, in this play by post, my character wondered: "Can one use a Simrig and a trode net to record ones experiences in the Astral?"
Let's first take a brief look at the rules for it (no, Xenon, I'm not really interested in a RAW debate, shush!

), shall we:
Simrig: This simsense recorder can record experience data (sensory and emotive) from you or whoever is wearing it. Simrig rigs are used to make most of the simsense chips sold on the market. You’ll need to have a working sim module (with the DNI interface) to make a recording.
In addition, the book has this to say about the Astral:
It is an emotionally charged photonegative of the physical world where only living things and things infused with mana are real and physical objects are mere intangible shadows.
However, it is very clear that technology and magic doesn't really mix, both from a lore perspective but also from the game mechanics. But this is one avenue I haven't really seen ANY mention of in the source material; while Astral Space is certainly a magical construct, the Simrig records as much what you "feel" emotionally as it does what you can "sense" through your eyes, nose, and fingers.
I've been thinking about this all day, and I'd really like to hear what others have to say about this from a theoretical perspective more so than a rules perspective; it's controversial enough by the rules, I'm just curious what people think MIT&T or the DIMR or the like might have come up with.
And if a Simrig doesn't do it, what other ways could someone record their journeys into the Astral, beyond noting them down with pen and paper when they return to their bodies?
My personal opinion only; the simrig can in fact record the experience, but it will at best be useless to anyone who cannot Assense, and they'd need a trode net and a hot-sim enabled link to experience the journey. I think it's a fascinating concept that deserves more exploration.