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Description:
I have to say that I am quite obsessed with this object so I am happy I had the opportunity to get the acquisitions to complete the previous version I showed some time ago. I had the opportunity to spend a few nights under a very dark sky (SQM 21.6), at about 2000m of altitude with excellent seeing and transparency, ideal conditions.
The object is complex to process because it was not enough to compose an HDR to best represent all its components, the central core, the concentric shells and the faintest extension. I essentially gradually stretched the image, in an incremental manner, masking the areas as they begin to become saturated. This allowed to get the image starting from a single exposure, except for the central core which inevitably requires a separate session.
I am also very happy with the results of the masks that I applied to the support for the secondary to eliminate the spikes, as the guys from Chilescope kindly showed me.
It was very nice to spend those nights because I had never had the opportunity to observe and image with my new instrument in such conditions.
It is amazing how much more signal can be obtained in the absence of light pollution and how much easier it is to process images essentially without gradients.
I hope you like it.
Nauris Mirrage Dobson 600mm f3,8
StellarCAT - Nexus DSC
ASI294MM 500ms x 10.000 - 1sec x 5.000
ASI294MC 1sec x 5400 (90 min)
Dark x 100
Astronomik L2
Paracorr type2
Falcon derotator
SharpCap - SiriL - PixInsight - PhotoShop
I also have to thank my mentor of the short poses Jeffbax Velocicaptor who in my opinion produced the most beautiful amateur image of this object that I have ever seen as I said the other time but above all my wife who makes me play while she takes care of everything 😊.
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Status | Advanced success |
Started | ... |
Astrometry.net job | 4917082 |
PixInsight job | VAJWNGY8IKLPYZ9NVQWWXZN9NFB07PYP |
PixInsight queue size | n/a |
PixInsight stage | n/a |
RA (center) | 17h59m05s.281 |
RA (top/left) | 18h00m24s.899 |
RA (top/right) | 17h57m13s.526 |
RA (bottom/right) | 17h57m46s.656 |
RA (bottom/left) | 18h00m56s.149 |
Dec (center) | +66°37′50″.66 |
Dec (top/left) | +66°46′13″.30 |
Dec (top/right) | +66°40′56″.31 |
Dec (bottom/right) | +66°29′26″.31 |
Dec (bottom/left) | +66°34′41″.29 |
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