Spot on! A few clouds, discarded about 20% of my lights but given the overall time of just over 30mins I kept some I maybe shouldn't have.
Also I don't have a dew heater yet so I had some condensation issues.
That is indeed a 12 blade aperture, the lens is a ttartisan 500mm f6.3
Not an affiliate link or whatever, just Googled it.
Thank you for your kind words!
Thank you! I'm currently trying to get decent shots of the easier targets before moving on to harder ones