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Today, I accidentally went through the questions under tag and all questions confused me totally. Looks like, there are many questions that seem to me like off-topic. I've listed several questions (There are more). They're confusing me a lot... (on-topic or off-topic).

Could someone suggest me how they are ON (or OFF) and why..?

1) Telescopes to avoid as a beginner?
2) Is building your own reflector telescope worth it?
3) How to determine what size telescope to buy (I'm wondering how this is on-topic even after my VTC)
4) How do you clean a dusty lens? (This is too ridiculous)
5) Where can I find information for how to create amateur radio telescope?
6) Novice interested in buying a used telescope. What questions should I ask?

All are not necessarily off-topic or not constructive. Maybe someone could explain about the on-topic...

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  • $\begingroup$ Well, I've VTC'd some posts to be closed. But, I didn't flag because I'm not sure. And, I don't want the mods to go here & there following flag rain. VTC is not a big problem. It would be disabled after some grace period :-) $\endgroup$
    – Waffle's Crazy Peanut
    Jan 17 '13 at 5:57
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    $\begingroup$ These would have been on topic at Astronomy, which I don't think was as particular about removing shopping recommendations or list questions as we are. So it's quite possible that all of them are off topic here. But I will leave it to the community to discuss - it would be best if any which are off topic can be closed by the full 5 people. $\endgroup$
    – David Z
    Jan 17 '13 at 6:14
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    $\begingroup$ #3 could use a better title, but it's not a shopping recommendation. Look at the question body. $\endgroup$
    – David Z
    Jan 17 '13 at 7:00
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    $\begingroup$ The dusty lens one seems OK to me. It's a problem pertaining to astronomers, so it is on topic. $\endgroup$
    – Manishearth
    Jan 17 '13 at 8:12
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    $\begingroup$ @Manishearth: Huh? - Cleaning a telescope lens (optic) is equivalent to a lens in camera too. I have a thought that it is very basic. From several answers I see there, It makes me think that it is very basic..? Even, the "basic" is not a problem. "Cleaning?" - I don't think its physical :-) $\endgroup$
    – Waffle's Crazy Peanut
    Jan 17 '13 at 8:19
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    $\begingroup$ @CrazyBuddy: Um, we have nothing against basic questions. And, similar to software questions, if your question is about a tool used by physicists/astronomers, it ought no be fine, imo. $\endgroup$
    – Manishearth
    Jan 17 '13 at 8:26

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