This is my main tool for photography ! Sony A7R mk ii. It is a mirrorless digital camera, with 42 megapixel, light weight (625gr) and quite small dimensions (126.9 × 95.7 x 60.3mm).
Easy to carry around, even on the hardest mountain hikes, weather resistant (VERY important when doing landscape photography !), high resolution (a great thing for prints), quite good also in low light conditions (even at high ISO the noise stays at reasonable levels) and a great performance with the Dynamic range (13,9 EV at ISO 74).
The only downside of this camera is a low battery duration: I just carry with me 2 extra batteries (they are very small and light by the way !) and I know I am good for 2 full days of photos in the nature.
At the moment I only use this camera with the ultra wide lens Sony FE 12-24mm f/4: 90% of my pictures are taken in this focal range so I do not need really long lenses, but it is in my plans soon to buy also a 70-200mm telezoom, because yes, I also sometimes need a long lens in my landscapes photos !
This lens by the way cannot support filters (only the dedicated 150x150mm mount), and it is not too light but neither too heavy (560gr), making a good tool also on my tougher hikes.
Always attached to my camera is the L-plate, a mandatory accessory for landscape photography.

I also have a Canon 6D astromodified (Super UV/IR cut), which I only use when I shoot starry nightsky: the modification is making me able to catch a wider spectrum of the electromagnetic waves. I normally use this one with the Sigma Art 24mm f/1.4, which is a great lens for situations in extreme low light, such as night. It is sharp, ultra fast, a bit heavy but usually for night shots I never find myself in extreme locations involving long hikes, hence I can afford an heavier backpack with me. Occasionally I also use the Samyang 14mm f/2.8, very bright and fast lens too, with a good sharpness for a very cheap price and light weight, it has also manual focus only, but that is not a problem at all because at night it is the only option you have !

This instead is my star tracker, the Sky-Watcher Star Adventurer 2i. A star tracker is a mechanic instrument that simulate the Earth rotation, allowing me to take long exposures (even up to 5 minutes or more) when shooting stars, without getting any stars trail.
This model also have the possibility to mount a counter weight, making possible also the use of the camera with longer lenses like a 70-200mm tele zoom. I normally shoot at 24mm (occasionally at 14mm) so I do not need it, but great anyway because you never know in the future !
It is also fairly small and light, so quite easy to pack and carry it in my backpack to locations a bit less accessible.

This is the tripod I use for most of all my photo shootings: XILETU L334C + G44 head. It is 187cm tall (such length helps to not lose shooting height if I shoot from an inclined ground) when full open and 50cm when folded, it has 33mm tube diameter making it very stable in any weather condition, and it is only 2.4kg of weight.
I also have an alluminum tripod for particular demanding hikes, which is smaller (150cm - 34cm) and lighter (1.6kg), allowing me to travel with less weight and also leaving more space for other mandatory equipment such as tent, sleeping bag and warm clothes.

This is my photo trips backpack: a Lowepro Flipside 400 AW.
Quite compact and comfortable, with all the room I need to store my lenses, camera and all the little complementary tools I need, and of course in case of need a bit of space for some food !