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Message: <blockquote data-quote="BF Hammer" data-source="post: 742832" data-attributes="member: 48483">I did some experimenting this past Saturday night when the Moon and Mars were converged together. I had my 1970's Nikkor 500mm f/8 reflex lens mounted to my D7000 and Sigma 150-600mm f/5-6.3 C mounted to my D750. I used my SkyWatcher AZ-GTi goto mount and tripod as the base. Both of the cameras were controlled remotely by DigiCamControl software. I particularly wanted to use the software so I could see LiveView on my laptop PC display, and I also used the astrophotography focus tools to dial in the focus as close to perfect as I could. Focus adjustment easily was my best job to date using this method (and I will continue using this method for astrophotography).I post-processed a single Raw image from each setup using Luminar 4. I tried to bring out the most detail of the moon as I could and boost the apparent brightness of Mars as the goal. The D7000+500mm reflex lens image did get a small amount of noise reduction filter (knowing it would detract from any sharp filter I applied) but the D750 image did not need this. I will admit, the full size images in Luminar have more sharpness. The D750 image lost a lot in the conversion down in size and into a JPG. D7000 image not as much loss, but lost a bit anyhow.D750 + Sigma 150-600mm f/5-6.3 C lens ISO=200 S=1/320 A=f/8[ATTACH]345031[/ATTACH]D7000 + Nikkor 500mm f/8 reflex lens ISO=160 S=1/200 A=f/8[ATTACH]345032[/ATTACH]Really in Luminar the Sigma is waaaaay better all-around. But the reflex lens is acceptable considering the purchase price. Put it on the D750 and it should have less noise and won't need to intentionally detract the sharpness there.</blockquote>

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