I live in northern NY (might as well say I live on the border of the US and Canada), and it gets pretty cold. Currently it is the daytime and the real feel is -7F (-21C), and that's with the sun shining and no clouds. I typically do astrophotography, and have done sketching in the past. I recently started going through old sketches (mostly around 2012) and was considering getting back into it, but these temperatures make it difficult to spend a long time at the eyepiece doing the detailed sketching. Heck, it's difficult to get out and setup the camera and the autoguider when it is this cold, but you have the comfort of going inside once the imaging is started so you can stay warm.
How do you do your sketching on these extremely cold nights? Do you do a little bit, go inside to warm up, then go back out and continue where you left off? Do you just say to heck with it and wait for it to warm up? Are you extreme and sit out there for an hour while doing your sketching in the subzero temperatures? Just curious on your methods on cold weather sketching. I'd love to get back into doing my handwritten logs and sketching instead of just imaging every night. I feel like I get a new love/joy for the night sky when I'm sketching things I'm viewing through the eyepiece.
I typically do my logs in a Rhodia Webnotebook (blank pages), and write my notes with a fountain pen using a "bulletproof" ink which can handle lower temperatures and is good for documentation (less chance of fading over the years), and do my sketching with charcoal pencils, 4b soft, 6b extra soft pencils, and a smudge tool. It has been quite a few years since I have done any actual sketching and I'd really love to get back into it in the near future.
In the picture attached that was through a 6" newtonian reflector, and I have yet to attempt sketching through my 8" SCT.