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Eta Carina NGC3372 good seeing last night
Captured Eta Carina last night under great weather and seeing conditions south coast
45 x 3 minute subs
20 darks
ISO 800
6” f6 newt on HEQ5 mount
Canon 600D ( sensor temp around 30deg )
PHD2 guiding around 1 arc sec error ( RA and Dec even Stevens )
Stacked in DSS
Processed in Startools
The only issue I had was collimation, my stars in the right hand side of each image were flared and the middle and left were perfectly round.Checked the primary mirror for pinching and it was ok, just misaligned a bit. The Repair module in Startools semi corrected the star shape in the final image
Focus was pretty good as even the smaller stars had tight diffraction spikes
Pulled the OTA apart today and recollimated
Might try Eta again tonight hopefully with rounder stars
Cheers
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