Celestial hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  Extremely wide field
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50 Panel Cygnus Mosaic made with APP with 0.11 pixel RMS registration, Kees Scherer
50 Panel Cygnus Mosaic made with APP with 0.11 pixel RMS registration
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50 Panel Cygnus Mosaic made with APP with 0.11 pixel RMS registration

Getting plate-solving status, please wait...
50 Panel Cygnus Mosaic made with APP with 0.11 pixel RMS registration, Kees Scherer
50 Panel Cygnus Mosaic made with APP with 0.11 pixel RMS registration
Powered byPixInsight

50 Panel Cygnus Mosaic made with APP with 0.11 pixel RMS registration

Equipment

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Acquisition details

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Description

The mosaic capabilities of APP have improved even more. As a basis for this Mosaic I used 50 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, it just takes my PC about 20 hours to make a mosaic this large. The full size version is 26026x27406 pixels (713 Megapixels).

That is not practicle for web use, but this upload is a 50% reduction and still a 96 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.

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

Weights: quality

composition mode: full

LNC degree: 4)

LNC it: 3

enable MBB: on

MBB%: 5

No under/overshoot on

Integrate set scale 1.0 (or 0.5)

The next phase is a 70 panel version including the Veil nebula. The computer is working on that at the moment.

Comments

Sky plot

Sky plot

Histogram

50 Panel Cygnus Mosaic made with APP with 0.11 pixel RMS registration, Kees Scherer

In these public groups

Cloudy Nights
Deep Sky Mosaics