sffbigmac
Rho Ophiuchi Menorca
Another Rho Ophiuchi attempt from Menorca, this time from Playa Binigaus. That bright thingie in the middle is Saturn.
The shot was taken with my SEL35F18 on the Sony A6000 @f3.2 ISO800 240sec x 6 (tracked with iOptron SkyTracker Pro), stacked in DSS and then processed in PS. Actually I did take even more shots stopped down to f4 @ISO1250 to reduce the massive tangential astigmatism (also see www.lonelyspeck.com/a-practical-guide-to-lens-aberrations... what that means) I had before (very disappointing for this "quality" lens) but the color noise then was way to much (and I did not want to expose any longer for lower ISO as there was already some wind from time to time at the beach that would likely ruin those shots).
Rho Ophiuchi Menorca
Another Rho Ophiuchi attempt from Menorca, this time from Playa Binigaus. That bright thingie in the middle is Saturn.
The shot was taken with my SEL35F18 on the Sony A6000 @f3.2 ISO800 240sec x 6 (tracked with iOptron SkyTracker Pro), stacked in DSS and then processed in PS. Actually I did take even more shots stopped down to f4 @ISO1250 to reduce the massive tangential astigmatism (also see www.lonelyspeck.com/a-practical-guide-to-lens-aberrations... what that means) I had before (very disappointing for this "quality" lens) but the color noise then was way to much (and I did not want to expose any longer for lower ISO as there was already some wind from time to time at the beach that would likely ruin those shots).