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Full Moon Oct 14, 2019 + first light for C90

astrophotography Maksutov mount
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#1 johnhudson922

johnhudson922

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Posted 15 October 2019 - 09:40 PM

Taken from my backyard in the Midwest during the night of October 14th, 2019. More or less full moon, 99.7ish?

 

Gear used:

Camera: ASI120MC-S (color)

OTA: Celestron C90

Mount: Celestron AVX

Software: Firecapture, Autostakkert!, Photoshop CC

 

About 11 panels stitched together in Photoshop. Videos captured at 1280x960 resolution and about 30fps. Manual focus.

This 500kb version is pretty heavily down-sampled from the original which is about 4700x4700. You can view a larger version by clicking on this link to Astrobin

Attached Thumbnails

  • 10-14 moon JPG Edit - 1500px.jpg

Edited by johnhudson922, 16 October 2019 - 02:05 PM.

  • Wouter D'hoye, eros312, fcathell and 3 others like this

#2 Tom Glenn

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Posted 16 October 2019 - 01:37 AM

Nice job with this image, John, with good processing overall.  You wrote that the full sized image is 9500x9500, which would have been a real head scratcher, because that's the approximate image scale that my C9.25 produces, so I was expecting to see an extremely oversized image with empty magnification, but the link shows the real image is 4727x4727.  I'm actually a bit curious about that image size as well, because it's larger than one would expect for the scope and camera combination.  The image scale of a C90 and ASI120 would make the Moon about 2900 pixels across in this case, whereas yours is about 4400px across (a 1.5x increase).  Were you using a barlow, or did you increase the size of the image during processing, such as a 1.5x drizzle?  If so, I actually think the image would benefit from being downsized back to the original scale.  Overall though a nice first image for the scope!



#3 johnhudson922

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Posted 16 October 2019 - 02:01 PM

Nice job with this image, John, with good processing overall.  You wrote that the full sized image is 9500x9500, which would have been a real head scratcher, because that's the approximate image scale that my C9.25 produces, so I was expecting to see an extremely oversized image with empty magnification, but the link shows the real image is 4727x4727.  I'm actually a bit curious about that image size as well, because it's larger than one would expect for the scope and camera combination.  The image scale of a C90 and ASI120 would make the Moon about 2900 pixels across in this case, whereas yours is about 4400px across (a 1.5x increase).  Were you using a barlow, or did you increase the size of the image during processing, such as a 1.5x drizzle?  If so, I actually think the image would benefit from being downsized back to the original scale.  Overall though a nice first image for the scope!

Thanks Tom. You're right. In Autostakkert I did 3x drizzle, and the resulting full sized stitch was about 9500x9500. I did have that on Astrobin but uploaded a reduced size version and forgot to update the text. The one that I uploaded has been reduced to about 1500px wide I believe. I am still learning a lot about this and the processing settings and options seem limitless. I may re-do some of the stacking with 1.5x drizzle possibly. 




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