I just found that AliExpress is up to a very bad thing that could & would leave beginner's blind-for-life: <<<The so-called Sun Filter.>>> These horrors screw into an eyepiece. Then pointed at the SUN. And shatter! This then allows the full and magnified Sun's intensity to enter the eye(s) of the user - which will cause blindness, or severe eye-damage in 1/200th of a second. Your blink-reflex won't kick-in until 1/20th of a second. I thought we'd seen the last of these! Please all - write an email to AliExpress and tell them to get these out of their website, or action will result to have an international-boycott launched against them until they do! Here's the page address, and navigate from there. Save someone's sight! https://www.aliexpress.com/price/te...l?spm=2114.10010108.1000012.19.3c885986CM4Dm1 Thank You!