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Thanks Andrew, I'll go do some reading !
Possibly related question: So when I compared particular RA/Dec numbers on the Audiostar screen with those for same object/same time on SkySafari app on my android, and Starry Night Pro on my PC, I noticed the Audiostar numbers were always a bit different to SkySafari & Starry Night, whilst the latter two were always in very close agreement.
When I say a bit different , from memory it was like/around 2 seconds (Dec) but I may I need to revisit and check if it's important.
Wondering if this is a scope error, or me?
Perhaps it's a known issue too, related to the firmware saga?
By the way - the vendor only reloaded handbox firmware, so it's still the same new handbox hardware, as purchased.
Lastly ... Is this an ETX-90 problem only, or does it apply to other Meade scope firmware?
cheers
Last edited by ninja2; 06-07-2018 at 11:27 PM.
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