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pushing a little C-90: moon at 4000mm

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#1 cchaven

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Posted 27 June 2013 - 09:04 AM

I decided to stretch things and try to get as close up with the moon as I could. I picked a bad night to do it though, as it had rained earlier in the day, the clouds came and went and the air was very thick.

What you see here is the moon taken with the Lumix G2 coupled to a Nikok F adapter, that coupled to a Tokina 2x teleconverter, then all of that on a T-adapter coupled to a LAR on the back of the orange Celestron C-90 (1000mm, f11) telescope! All of this works out to an affective focal length of 4000mm at f22 (1000mm + 2x teleconverter + 2x crop factor of the G2).

I did about a dozen shots over a wide ranger of shutter speeds to ensure I got one I liked. The G2's shutter was fired with a remote release, and the C-90 was mounted on a Celestron alt-az tripod. This image is just as it came from the camera..it wasn't cropped or enlarged in any way.

Jeff

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#2 RossSackett

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Posted 27 June 2013 - 02:56 PM

As I mentioned in the PM, I've reworked your image with a L-R deconvolution and a little play with the contrast:

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#3 cchaven

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Posted 27 June 2013 - 04:24 PM

Wow...that is amazing...what a difference it made...and that the little orange tube C-90 caught that kind of detail. I'll have to look at that more then..get out of my habit of trying to do it all at the time of shooting and adding a little post processing to the mix.

Thanks
Jeff

#4 RossSackett

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Posted 27 June 2013 - 05:32 PM

Getting a good image is important, but to get the most out of the image you need to do some processing!

#5 cchaven

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Posted 28 June 2013 - 01:44 PM

Here's another moon picture taken mid May with just the C90 and the G2..no teleconverters. One of my first attempts at processing.

Jeff

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#6 RossSackett

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Posted 28 June 2013 - 02:44 PM

Nice.

#7 Trever

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Posted 30 June 2013 - 01:58 AM

That C90 is awesome! Very nice detail.

#8 rg55

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Posted 30 June 2013 - 12:52 PM

Ross,

I've been trying to find out how to do deconvolution. I own Photoshop CS5 and am fairly familiar with Registax, but how can I perform this? Thanks for any insights!

#9 RossSackett

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Posted 30 June 2013 - 05:33 PM

I do Lucy-Richardson deconvolution in Astra Image. As an alternative you can do something similar in Registax with wavelets.






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