NGC 891, Colin McGill

NGC 891

NGC 891, Colin McGill

NGC 891

Equipment

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Acquisition details

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Description

I have been working to improve my imaging set up. I purchased an ONAG in March, but was struggling to reduce the flexure to acceptable levels. Gaston Baudat from Innovations Foresight helped enormously and I now have flexure down to 0.01 arcsec/minute, allowing me to significantly improve my guiding.

In addition, I have been working with Camilo Maranchon from Astrocamp to improve my collimation. Its not perfect yet, but much improved. I have managed some 10 minute subs now with a FWHM of 1.6", about 0.5" better than I have achieved before.

This image is a test of the improvements - if you compare with my image from last year, you'll see a big improvement in the image - the stars are much less elongated, the colour alignment is therefore better and the resolution is also much improved.

So a heartfelt thank you to Gaston and Camilo!

Colin

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NGC 891, Colin McGill