Coronado PST Rust Check | Astrobiscuit | Page 1

shrewd raven Oct 19, 2024, 8:32 PM

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Hi All,

I bought a second hand PST, just wanted to ask how to check a coronado PST for rust, my images look okay atm, surface detail like mottling can be hard to spot, might just be me though. I can see sunspots fine and the overall shape is bright and red.

The seller sold it to me in excellent condition and seems to be that way. Was just unsure as I know the newer PSTs have their rusting element moved in an attempt to fix the problem with the older ones.

SN. 109576

tacit cosmos Oct 19, 2024, 8:33 PM

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yo

shrewd raven Oct 19, 2024, 8:36 PM

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tacit cosmos yo

hey :), yeah like i said it seems okay, i cant take any pictures of the sun with it because ive got no camera mount, but generally the picture is pretty good, surface detail is just hard to see. Was wondering, the inside of the scope is that orangy colour, my first thought is that its the light reflecting of the etalon but was unsure as again i know these are prone to rust

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I am using just a 20mm plossl so maybe a better magnification would help

tacit cosmos Oct 19, 2024, 8:37 PM

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shrewd raven Hi All, I bought a second hand PST, just wanted to ask how to check a coronado ...

if it works i dont think there is a big problem but i cannt tell if there is rust

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ohh yh i think i see some

tacit cosmos Oct 19, 2024, 8:38 PM

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shrewd raven hey :), yeah like i said it seems okay, i cant take any pictures of the sun with...

im not experienced in solar scopes im gonna tag someone who is