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Old 09-05-2019, 06:59 PM
tornado33
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tornado33 is offline
 
Join Date: Jan 2005
Location: Newcastle, NSW, Australia
Posts: 4,109
Sharpcap Polar Alingment

Hello all.
Since coming across Sharpcap's Polar Alingment function Im amazed at how easy and fast it is to do. We have reactive clay in the yard and without a deep permanent pier polar alignment can change over time. So while still twilight as soon as theres enough stars for Sharpcap to platesolve I do the polar alingment. Have a look at how close I got it, 5 arc secs and it takes atmospheric refraction into account after inputting ones location co ords. The polar alignment was complete even before it was dark. I use an 80mm short refractor to do it with piggybacked on the 10 inch scope.

This now allows me to do 15 to 20 minute subs without making any dec corrections, and makes the Argo Navis more accurate as well. last saturday night I tested it at another location when i took my Sampson Mount to a Newcastle Astro Society viewing night at Speers point, we set up in the local pool car park, on bitumen. Again I got precise alignment. very happy with this polar alignment function
Scott
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