You've never once questioned any claims from your 'astronomers', who have NEVER allow others to see if their claims ARE true, or not true, which means they are NOT telling us the truth, because that is the ONLY reason they don't allow others to validate their claims as true, because they know it is NOT true.
This has got to be one of the strangest claims ever.
There are any number of observatories where you can go and are invited to even look through a mighty large telescope. You can buy your own high-powered telescope and look for yourself at leisure. There are a gazillion amateur astronomer/astro-videographers and photographers around, astronomy clubs, online and offline. Have you even thought to actually seek the "truth" yourself or are you just sitting there on a couch in the basement typing away at what's only inside your head?
If you don't want to be a sheeple, actually go and do something about it. Get out there and explore the cosmos yourself rather than just making up things to satisfy your internal sheeple belief system. Why so lazy?
You can study astronomy in college/uni if you so desire and have access to any data you want. Heck, even my old public high school now has a dome on the roof with a 12-inch Cassegrain telescope inside for upper level students of astronomy.
Just because you as a sheeple choose not to take advantage of the open access available is more a personal problem of yours - An extremely ignorant and bizarre claim that astronomers NEVER allow others to see if their claims ARE true. Have you ever even looked through a telescope? Binoculars?
Actually, it's totally valid.
Suppose I told you I have a painting. But all I let you see in person is this:

No, it's totally invalid. All you have to do is look up a local observatory and most likely they have open hours or classes and such where you can actually look for yourself through their instruments.
A quick google search:
Community Observatory
Placerville, CA
"The Community Observatory is your window to the night sky! See the stars through the 17-inch and 14-inch reflecting telescopes on a clear, dark night. Follow planets or the moon as they travel across the sky. Bring the whole family for an unforgettable experience in the foothills of El Dorado County."
Whitin Observatory at Wellesley College
Wellesley, MA
"About once a month during the spring and fall semesters, Wellesley students and faculty open the Observatory to members of the public. Visitors are invited to take a tour, listen to talks, and (when clear) look through our 6-inch and 12-inch telescopes."

Adler Planetarium’s Doane Observatory
Chicago, IL
"While we try to open the Observatory on Wednesday nights during Adler at Night (also known as Illinois Resident Discount Days/free days), the weather makes the schedule a bit unpredictable. To know when the Doane will be open, join our Facebook Group. You can also check in at the box office on the evening of your visit to inquire about the availability of the Observatory."

And 100's more around the country, 1000's around the world.
It's just super ignorant, lame, and lazy to say astronomers are hiding everything behind a curtain when if you actually dropped the "Everything is a conspiracy!" bit for just a moment, you would actually see that you can see behind the curtain.
The problem with is from age six or so onward, you have let your teachers, films, and magazines (notably National Geographic) tell you how to examine the world.
That sounds like a personal education issue. My experience was the exact opposite.
I don't live near big cities (which btw have a messed up skyline because of chemicals, too mant streetlights, and planes). But I can see ths night sky outside my back porch for free, every night. With my naked eye. It is precisely because of this that I have thrown away RE rhetoric. Because every night, I see similiar to this.

You don't have to live near a big city to visit an observatory. As I mentioned before, my old high school has one and it's in a very rural place. Zero light pollution. And like I mentioned, there are hundreds of observatories in the US, 1000's around the world, that aren't in major cities and don't suffer from light pollution. You're just making up excuses.
Not to mention the 10's of thousands, if not 100's of thousands of people around the world who have their own telescopes. You're just making up excuses.
I'm guessing you're smart enough to know this and you're just playing games at this point.
From your cities? "I see a round sky..." No you probably see the round shape of the telescope. Or you forgot the observatoty has a domes shape and looking ar the horizon through a dome creates a sensation of curvature. You must always, always be aware of hos your surroundings affect what you see.
So you've never looked through a telescope? You realize you can look through a telescope not at the sky, you know, like a skyline, a plane, a car. Does it look "round" to you? Do you forsake the notion of people wearing glasses or contacts because they are looking through the round shape of magnifying lenses? Are you actually being serious?
As for observatory domes, if you've ever been to an observatory, or just happen to live in any sort of reality, you would see that the dome is opened and the telescope is pointed out through the opening. Literally anyone can see that. Are you just making up things for giggles, because that is the dumbest most easily refuted idiocy I can think of right now.
Apparently, you have zero sense of your surroundings for actually suggesting this.
I'm not believing "conspiracies". If you were never ever told the Earth is round, you would believe it is flat.
You are the one who need to let go of preconceived notions, not me.
Actually no, there were plenty of ancients who determined the earth was a globe without having been told. And as a kid, if one had a proper education, there are many demonstrable, measurable, testable things that confirm it.
Until about age 34 or so, I fully accept the idea that the Earth was round. Then I saw something that didn't add up, so I decided to test my reality. I discovered that what I had been taught was filled with similar holes. So I threw out this nonsense in favor I what I was personally sure of.
So what was the thing you saw that changed your mind?
So if I'm not sure of something being true, I reject it as unproven. I certainly don't regard it as science.
That's a tremendous failing on your part then. It pretty much explains everything. You see, the way it is supposed to work is that when you feel something isn't true, you try and confirm that. Not immediately reject it. Your philosophy is a massive crash and burn and no wonder why you're so desperate to glom on to anything that fits your knee-jerk rejections - Making up shit all the time that takes 10 seconds to show that you are, unequivocally, wrong. You don't even stop to think about it. Case in point above:
Observatories just point their telescopes at the inside of the roof to trick you. So lame. Everything you've said here is so easily refuted it's ridiculous at this point. You literally just fabricate things that I'm pretty sure you know are wrong. It's very strange that you do that. Why do you do that?