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Author Topic: M101  (Read 185 times)

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Offline Ian Straton

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M101
« on: 22:22:15, 20 March, 2018 »
taking the lessons learned from the horsehead I have put together this stack of 30x300 second exposures at iso400 calibrated dark, flat and bias, processed in pixinsight.

I'm not absolutely sure about the focus, I did use a bahtinov mask but the required precision is something I find hard to judge sometimes...

Offline chris.bailey

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Re: M101
« Reply #1 on: 22:39:48, 20 March, 2018 »
Nice one Ian. Did your base images have a little more signal than last time. It may be the focus was off but sometimes the seeing can have the same impact.

Chris
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Offline Ian Straton

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Re: M101
« Reply #2 on: 22:44:45, 20 March, 2018 »
yes, much better snr, not surprising though considering the brighter and broader spectrum nature of the target, it was a much easier stretch.  That said the struggle with B33 gave a lot of useful instruction and I found this a much easier process :)

 

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