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Photo

NGC884 and M45 with TS RC6and Nikon D5300

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#1 patdut63fromFr

patdut63fromFr

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Posted 18 October 2020 - 06:34 AM

Finally after 2 nights to improve collimation of my RC6 I have got some quite good results on bright targets.

The collimation can be still improved as viewed in the corners of the following pictures.

Skyquality ~2-3 on Bortle scale

Pre-processed with Siril

Post-processed with Darktable

 

50499994543_03b9bfcef4_z.jpg

pleiades_05 by Patrick Dutoit, sur Flickr

 

50500399578_ccdc5b925a_z.jpg

ngc884 by Patrick Dutoit, sur Flickr


  • Starman27, chrysalis, Readerp and 1 other like this

#2 sunnyday

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Posted 18 October 2020 - 08:21 AM

very nice , i love the Pleiades. thanks .



#3 patdut63fromFr

patdut63fromFr

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Posted 18 October 2020 - 11:36 AM

Thank you sunnyday.

To be able to do an appropriate collimation I wrote a little python script that give me histograms of elongation and eccentricity of stars on a 3x3 regions of image.

Unfortunately process is very slow so I had to move collimation and adjust it by eye going back and forth from the primary and secondary and after two hours of work I made some pics and ran the script to see the result of my manipulations. This little tool helped me a bit. And 2x2h were enough to get a quite good collimation.

I am looking for someone that could help me to speed up the process such it can be used along with adjustments.

If there is voluntaries or suggestions ...



#4 Starman27

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Posted 18 October 2020 - 12:46 PM

Very nice images.




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