Building further on the 48 (50) panel mosaic i added a row of 16 panels to include the Veil nebula Complex. As a guide i used the Sequence Generator Pro Frame & Mosaic wizard generated output print (included here as "Original revision" with all my pen scribblings showing the approach with the 16 panel later addition.) I added some panels in the overlap with the 50 panel mosaic to assure that the registration would have enough overlap area to work with. The resulting registration RMS error is 0.1 pixel.......

As a basis for this Mosaic I used 70 seperate stacks (also made with APP) with integration times between 45 and 345 minutes each depending on the object in the frame. An all new mosaic registration algorithm was used that is capable of truly sub pixel perfect registration of these large Mosaics. And the whole process is fully Automatic. The full size version is 29320x35386 pixels giving 1038 Megapixels).

That is not practicle for web use, but this upload is a 50% reduction and still a 120 Megabyte JPG. (So it still takes some time to load when you select the "full resolution" option here on Astrobin ;-)

Processing: only histogam stretch and curves adjustments, nothing else.

The Fits file size of the full version is 3.7 Gb.

Data collected between may 8 and july 31, 2017.

Mosaic settings APP with version 1.0521 (Experimental version to test new Algorithm):

3) Analyse stars

min size: 4

Clip Prof: 0.1

Filter profile: off

Kappa: 3 (set to detect 3000-5000 stars)

4) Register

Pattern recognition: pentagons

scale start: 5

scale stop: 10

use dynamic distortion corr: on

same camera and optics: off

Distortion margin: 0.02

# of overlapping frames: 9

registration mode: mosaic

registration model: projective

6) Integrate

composition mode: full

LNC degree: 4)

LNC it: 3

enable MBB: on

MBB%: 5

No under/overshoot on

Integrate set scale 1.0

The Astro Pixel Processor website: https://www.astropixelprocessor.com/

Featured in Flickr Explore: https://www.flickr.com/photos/kees-scherer/36598821376/

IOTW (Image of the week) feb 5,2018 Photographing Space:

https://photographingspace.com/iotw-feb-5-2018/