u/Intro24

Surface of Titan vs Clouds of Venus for human short-term survivability with minimal protection?

My understanding is that basically just Titan (on the surface) and Venus (in the clouds) are the places in the solar system that wouldn't require a pressure suit for human survival. Venus even has nice temperatures, however it would require some sort of airship and there would be battery acid droplets in the air. Titan, on the other hand, is stupidly cold but at least no acid burns. Both places would obviously require a breathing mask and some amount of protective clothing, though much like space I think just walking outside naked and not breathing for a few seconds might be survivable or even bearable. For a few seconds, anyway...

My question is which of these places requires less specialized survival gear to be outside on an EVA for like an hour? Which one would be more pleasant?

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u/Intro24 — 7 days ago

TIL the NexStar 4SE I've had for 20 years has an internal AA battery compartment

I recently posted about how this scope wasn't meeting my needs (mostly a travel terrestrial and Moon, Jupiter, Saturn scope) because I never have a power supply and it can't be turned left/right if it's not powered on. Well I was googling around and imagine my surprise in finding out that it has had a battery compartment all these years. This makes it so much more usable and it feels like a brand new telescope all of a sudden. From what I've read, AA battery power can cause some strange issues but I barely care about the tracking, alignment, etc. I just want to be able to turn the scope. In the past, I have had to physically move the entire telescope in order to hone in on what I'm looking for or when manually tracking the Moon. Awesome to know I can just throw some AAs in there and make adjustments with the electric motors. I'd still prefer non-electronic knobs but the discovery of the battery compartment has made this telescope much more usable for me.

u/Intro24 — 8 days ago

I'm in love with Questar telescopes because they:

  • are extremely high quality in terms of engineering and optics
  • are extremely compact all-in-one "portable observatories"
  • come with carry case, accessories, and feel much more like a polished product
  • have thoughtful design touches and obviously are very well designed
  • are gorgeous and vintage and just awesome in every conceivable way
  • have a built-in finder and the control box is an amazing idea
  • don't need power and are very easy to use

The problem is that they're thousands of dollars. I drove 3.5 hours to potentially buy one that was a mere $2000 but it had issues that weren't disclosed so I didn't want to drop that much money even though it was still probably a decent deal. So I'm looking for a compact, portable, and easy to use no-fuss telescope that's ideally sub-$1000. I have near-zero interest in astrophotography or really anything aside from terrestrial viewing and Saturn/Jupiter/Moon. I just want something that looks pretty while I'm not using it and that I can throw in the car and break out on occasion for spontaneous stargazing. I want as little collimating and setup as possible in a compact and portable all-in-one package.

That said, I also love seeing the details of Jupiter so it's a tricky balance of portable and powerful. I currently have a Celestron NexStar 4SE and it's actually pretty close to what I want but I hate the computer parts of it. I never plug it in and I literally just move the whole telescope when I need to point it left or right. I don't want to go any smaller than 3.5" and I could even entertain going up to 8" like the Celestron NexStar 8SE. That one is certainly a thicc boi but it's still relatively compact. It would still have the issue that it's not really meant to be used without a power source though. I did read the subreddit guide and the only thing jumping out at me is maybe a tabletop dob but I'm not sure if that would work for what I'm wanting. Maybe a refractor?

Any thoughts on what would be philosophically closest to a Questar without costing thousands? Maybe I will just break down and buy a darn Questar one day but I have an itch and I'm wondering if there's some sort of similar tabletop.

Edit: I'm in the US with suburban light pollution but plan to potentially travel to darker skies with this telescope.

Edit 2: Here's some photos of that Questar showing some snowflake looking stuff around the edge of the primary mirror. It's a broadband coated 1970 model I think if that matters. I would appreciate if anyone could comment on how concerning those issues are. You can also see that the correct/secondary look foggy-ish too. Thoughts?

u/Intro24 — 15 days ago