Celestial hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  M 101  ·  NGC 5457  ·  NGC 5461  ·  NGC 5471
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The Pinwheel Galaxy, Alistair Scobie
The Pinwheel Galaxy
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The Pinwheel Galaxy

Getting plate-solving status, please wait...
The Pinwheel Galaxy, Alistair Scobie
The Pinwheel Galaxy
Powered byPixInsight

The Pinwheel Galaxy

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Description

This is my second attempt using my new SCA260 astrograph from Sharpstar. For this attempt I have corrected the balance of the 18kg imaging train on the EQ6-R mount and added a ZWO off axis guider.I choose M101, mainly because it was the first galaxy I ever attempted to image and also because I have never been happy with any of my resulting images of it.This image is composed from 3 x 23 RGB subs of 180 seconds, 70 L sub-frames at 180 seconds and 23 Ha at 300 seconds stacked in APP. The image was processed in a mixture of PI and Photoshop.Stars are a bit soft, probably as a result of imperfect collimation and reliance on manual focusing.

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The Pinwheel Galaxy, Alistair Scobie