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Old 12-07-2019, 09:51 AM
RussellH
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RussellH is offline
 
Join Date: Oct 2005
Location: Sunny Queensland
Posts: 172
I hope to have good tracking eventually, although I’m starting with a generic 50mm guide scope and an ASI120MM mini, so room for error with long focal lengths.

You your image was taken at 4500mm? I’d need a 5x Barlow for that. Been about 35 years since I’ve looked through a Barlow lens. Back then it degraded the image horribly. Can’t imagine what a 5x would have looked like.Are they better these days, or is it just a matter of needing a stable enough image to be able to take super long exposures?
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