![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjorC75oj-V2cD1Bv9ztY21t_vBkBxTTNYCDQT9QEbrXnf9dfbll5yvz8sHsomoMgWUik7mPx7UmixumRqCaPFUYZag_gleWj5Kf5N8aAPtSQI7JcWjHOH72wh9rrNMZ655ER5RlxUrWcQ/s1600/BillHughes-M31-140929.jpg)
By Bill Hughes, using a modified Canon 600D, with a 200mm f/2.8 Canon lens. The exposure was 6 x 69sec at ISO1600. Canon in-camera noise reduction was used before stacking in Astroart and finally processing in Photoshop Elements 10 with help from GradX and Topaz Denoise.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgjmv2_ZQu6CEEiKYMu2xDXgrEsCVsLSML5x_jZAFcu3dLjPOz81j1r5KPB6CQea4NoyiD1g-CQnVsYUn2XIfcQITS_OAnO-oQ3LbzkaD96hcqENL6A1EnfDZR6K3Ut_Ptsr6yFr2wSlv4/s1600/MAX-M31-140930-2.jpg)
The second version is the work of Max Freier who used a Nikon 90D. The exposure was 120 x 60sec, darks taken separately. Acquired in BackyardNIKON, stacked in DSS and finally processed in PixinSight.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgmvu7bhZNc7Z5ILXywZYCkc56OSyvgURv-nZBYO9jftaqHXkklud37AsCAaLG5VGVBFW3Q9N93ofkTlv5ETRNRbxVhiBQKEDPWJBlORvwdsgtVxGo-zL9hJE-O26gEsLPAyQupjIn1kEY/s1600/RHYS-M31-140823.jpg)
The third is by Rhys Owen, taken with a Canon 600D through a Takahashi FSQ106ED, for 1 x 300sec exposure. Processed in Photoshop. Is that a meteor strike?
Three different results of the same subject showing the variation obtainable through different methods and processing.
It isn't a competition, just chance that they all worked on the same subject, at about the same time.
All pretty good considering the minimal data they all had to work with.
1 comment:
On Rhys's image, no that is not a meteor strike. It is an aircraft. You can see that the light was flashing.
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