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Post by lesliehess on May 1, 2013 19:05:04 GMT -5
Some 54 km across Comernicus Crater. Istar 204mm f11.7 barlowed to ~6000MM, Canon 7d prime. 120 frames best 80 percent stacked in Registax.  |
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paulci
Junior Member
Posts: 20
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Post by paulci on May 2, 2013 3:27:58 GMT -5
Hi Leslie,
Great amount of detail in that image. This is making me even more impatient, waiting for my 8" F12 R35 lens. Greatly admire your tube construction. I'm considering using a thin ply lamination, 12 sided, in order to try and keep the weight down.
Keep posting the pics. Would be very interested to know how your scopes performed on Saturn & Jupiter.
Thanks for posting
Paul
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Post by lesliehess on May 2, 2013 19:33:27 GMT -5
 Man the views of Saturn and Jupiter have been splendid. I have not had a session where conditions were optimal for those subjects. I have one to share here I processed in DSS. Conditions were turbulent ans seeing was nominal. I am positive results will just get better from here. |
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paulci
Junior Member
Posts: 20
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Post by paulci on May 3, 2013 5:50:01 GMT -5
Leslie,
Real evidence that the Istar lens has great potential to deliver. Keep posting your findings
Thanks
Paul
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Post by Mike on May 16, 2013 11:18:56 GMT -5
Hello Leslie, I've taken hundreds and seen thousands of moon images. This is very impressive. It's more than just a good clear image. It's the way the image conveys the incredible impact of whatever struck the moon to create that giant crater. When I look at the image all I can think of is what a catastrophic event that must have been. Thanks for sharing a most impressive image with us. PS. I printed it out and hung it on the information board at the office. I've noticed people staring at it  |
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Post by lesliehess on Jul 6, 2013 10:45:53 GMT -5
Thank you Mike an Paul. The ejecta looks like it must have came down in massive sheets. By my calculations the resolution is about 1 km in this photo. I am so satisfied with this lens.
Last night I was drift aligning the scope and had a great chance to check some stars. At 240x absolutely zero coma. Stars were delightfully round. At focus I saw very little noise. Very bright red stars presented some divergence. I suppose stopping back the lens would eliminate this. I was using a Maxbrite binoviewer and Pentax 10mm that Ales had recommended with a v-r cut filter.
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