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ngc 6744
* Scope: GSO 8in f4 with MPCC and moonlite focuser
* Imaging device: QHY8
* Mount: HEQ5 pro on jarrah post
* Guiding: 50mm modified finderscope with QHY5(colour) - PhD through AT4.
* Exposure details: ~110 min total, mix of 5 and 3.3 min subs at whatever temp the QHY8 got to.
* Stacking method: stacked in Nebulosity with translation and rotation compensation. No flats or darks to minimise noise, but used bad pixel removal.
* Summary of post processing: Nebulosity “curves” used to bring up low signal regions. IRIS to flatten background and sharpen image with substantial amount of RL deconvolution. GIMP2 to tidy up residual imperfections and prepare for posting as a JPEG. Heavily cropped and resampled to fit post requirements.
* Imaging site: Seeing below average but no wind. 1/3 moon for much of the session. Clouds terminated the imaging session not long after the moon set.
* Date(s) image taken: 17/7/2010
* Philosophy: Didn’t image for anywhere near long enough and need more signal to bring out the structure in the outer regions. Poor seeing meant significant deconvolution processing was required to extract any detail and tracking was also below par, resulting in saturated and distorted stars. However, it’s still a keeper because the beauty of the galaxy itself compensates to some degree for some of the technical defects. Will certainly be trying this one again.
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