Celestial hemisphere:  Northern  ·  Constellation: Andromeda (And)  ·  Contains:  NGC 891
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NGC 891, Daniel.P
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NGC 891

Getting plate-solving status, please wait...
NGC 891, Daniel.P
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NGC 891

Equipment

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Acquisition details

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Description

A short work on NGC 891. I was not so successful mainly due to poor mount balance.

It is important that there is some mount "unbalance", in this instance in DEC, to prevent the mount "floating" under the influence of a weak wind. I tried with and without AO, but in both case the system struggled to much to track.

3 subs with AO "off" and 2 subs "on"

Pre-processing done in Pixinsight :

- overscan area offset correction

- bias correction

- dark correction using 7 x 1800 s darks

- hot pixel correction

- debayer

- registration

- stack

Processing done in Pixinsight :

- backgroung color neutralisation

- color calibration using galaxy

- sky background removal (DBE in PI)

- slight deconvolution

- non linear image creation

- color saturation boost masked

- green neutral

- TGV denoise (no mask)

Final image :

- jpeg calibration done in Mac Photo (levels adjust and further saturation boost and color balance)

Comments

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Histogram

NGC 891, Daniel.P