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Member Since 15 Dec 2006
Offline Last Active Sep 04 2021 10:34 PM

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Ok with moon photos but having problems with planets

28 December 2020 - 01:52 AM

I got these two moon photos Saturday night, but the planets not so much.  I have a Tamron 400/4 with the 1.4x and 2x Adaptall converters and a Nikkor 300/2.8 AFS with the Nikon 1.4x TC.  The third photo is a composite of Jupiter and Saturn taken with the 400 with both TCs on it.  It's heavily cropped, not terribly sharp, and has a ton of coma around Jupiter.  I compare this with teh shot of Jupiter that Jim got with the P900 and I wonder what I'm doing wrong.  I also tried shooting Mars Saturday night with multiple different lens / TC combinations, but all I got was either a bleached white ball with an orange fringe or an orange ball with a darker orange fringe.  Am I expecting too much out of my equipment?  The last photo (the little one) is a deep crop from a shot of one of the stars in Orion's belt and there seems to be some detail in it unless that's some kind of artifact.


Any thoughts??


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