Celestial hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  10 Cyg  ·  10 iot Cyg  ·  13 tet Cyg  ·  14 Cyg  ·  16 c Cyg  ·  18 Cyg)  ·  18 del Cyg  ·  21 Cyg  ·  24 psi Cyg  ·  26 e Cyg  ·  30 Cyg  ·  31 Cyg  ·  32 omi02 Cyg  ·  37 Cyg)  ·  40 Cyg  ·  41 Cyg  ·  42 Cyg  ·  43 Cyg  ·  44 Cyg  ·  47 Cyg  ·  48 Cyg  ·  49 Cyg  ·  50 Cyg)  ·  50 alf Cyg  ·  51 Cyg  ·  53 Cyg)  ·  53 eps Cyg  ·  54 lam Cyg  ·  55 Cyg  ·  56 Cyg  ·  And 1598 more.
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Cygnus wide field 26x22 degrees FOV: 12 pane mosaic, James Clark
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Cygnus wide field 26x22 degrees FOV: 12 pane mosaic

Revision title: Apologies. THIS is the final one!

Getting plate-solving status, please wait...
Cygnus wide field 26x22 degrees FOV: 12 pane mosaic, James Clark
Powered byPixInsight

Cygnus wide field 26x22 degrees FOV: 12 pane mosaic

Revision title: Apologies. THIS is the final one!

Equipment

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Acquisition details

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Description

Mostly shot in astro twilight, 1-2 hours per pane - it was more of a test to see if it were possible.  Certainly worth adding some better data in proper darkness and less moon-affected, but I'm quite please how it came out for a first try.
WARNING: The .png image is not resampled, is over 16kx13k pixels and is 336MB so might take a while to load.  The original .xisf image is 5.3GB in size, thanks to PixInsight's Star Alignment and Gradient Merge Mosaic
If I can I'll post an annotated (down-sampled) version.  I like that you can look into the night sky, see the Cygnus constellation and know what else we could see if we had better than our puny human eyesight.

All shot at f/2 with the Samyang 135mm and I used the standard ALP-T filter, not the fast version (as I don't have that one ....yet)

Comments

Revisions

  • Cygnus wide field 26x22 degrees FOV: 12 pane mosaic, James Clark
    Original
  • Cygnus wide field 26x22 degrees FOV: 12 pane mosaic, James Clark
    B
  • Cygnus wide field 26x22 degrees FOV: 12 pane mosaic, James Clark
    C
  • Cygnus wide field 26x22 degrees FOV: 12 pane mosaic, James Clark
    D
  • Final
    Cygnus wide field 26x22 degrees FOV: 12 pane mosaic, James Clark
    E

B

Title: Lower resolution version

Description: Only (!) 51 MB

Uploaded: ...

C

Title: Lower res, annotated jpg

Description: 22MB - so you can see almost all of the Cygnus constellation

Uploaded: ...

D

Title: Finally looks ok I think!

Description: Reprocessed with GraXpert, BG Neutralisation "Target background" mode, MosaicByCoordinates, BlurXT v2 and Bill Blanshan's NarrowbandNormalisation process. The background and gradient removal is much better on this version and I preferred the HOO blend to the standard palette.
This image is 50% downsampled (so 1/4th the pixels) and saved at 93% quality jpeg to get the size down below 25MB for user-friendliness.

Uploaded: ...

E

Title: Apologies. THIS is the final one!

Description: After a great suggestion from @carefreeastro I redid the new version, using GraXpert on the individual panes (as before) plus on the initial mosaic and on the final stretched image (yes I know, naughty naughty). I'd gone a bit nuts on the contrast and saturation so belneded the new image (60%) with the previous image (40%) to get this version.
Better gradient control I think and nice balance in contrast and saturation

Uploaded: ...

Sky plot

Sky plot

Histogram

Cygnus wide field 26x22 degrees FOV: 12 pane mosaic, James Clark

In these public groups

Yorkshire Astro Imaging