With a 20" at 272x: A slightly brighter center to a disc. Easy to find, no central star or color.
With an 18" at 286x: There was a faint, relatively large glow.
Sounds like an O-III may be slightly better than a UHC.
With a 20" at 272x: A slightly brighter center to a disc. Easy to find, no central star or color.
With an 18" at 286x: There was a faint, relatively large glow.
Sounds like an O-III may be slightly better than a UHC.
15" f4.5 Obsession Classic
4" f8.6 Televue 102
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