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Old 18-08-2022, 09:00 AM
Tropo-Bob (Bob)
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Tropo-Bob is offline
 
Join Date: Sep 2013
Location: Cairns
Posts: 1,608
Will an Auto-guider fix these star trails?

I took this 2 min shot last night with my 115mm Vixen at ISO 2500.

Star trails can be seen. My mount is a 15 years old EQ5. If I upgrade to a mount with an auto-guider, will that fix this?

I don't really understand: Does an auto-guider control both motors to correct drift in both directions or only in RA? Also, besides having to buy an actually guide scope and autoguider, do I also need a laptop for this to function or does it do so without an external computer.

I think that the camera may have a tiny slip during the imaging. I currently use a 1.25" connection to the scope. Would I be better of using a 2" connection?

Help please!


PS: Image is The Helix Nebula.
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