6-Panel Mosaic of Elephant's Trunk from Bortle 9 (Crop) (Jon)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: HD205510 · HD205917 · HD205948 · HD206081 · HD206267 · HD239710 · HD239712 · HD239724 · IC 1396 · LBN 451 · LBN 452 · LDN 1093 · LDN 1096 · LDN 1098 · LDN 1099 · LDN 1102 · LDN 1105 · LDN 1112 · LDN 1116 · LDN 1117 · Sh2-131

6-Panel Mosaic of Elephant's Trunk from Bortle 9 (Crop)

This was taken over a 6 week period in August and September from Orange, CA, skies around Bortle 9. To lessen my processing pain I did try and only do one filter per night, but still shoot all 6 tiles, even if it meant only getting 3-5 exposures per tile in a night - I wanted to get equal light pollution in each of the tiles. I don't think it worked out how I expected as the matching of brightness between all the panels (2 x 3, times 3 filters) was a huge challenge. The processing took at least 12 hours, compared to maybe an hour or two for a typical SHO photo. Every time I do a mosaic from my light polluted skies it reminds me why I don't do them very often.

Having said that, I'm loving the extra detail I get from shooting with the EdgeHD11 and using a mosaic to get the field of view I want. Pro's and cons. Next time I'll be certain to check my framing of the mosaic a little better before I get started!

The mosaic was planned and captured with NINA, each panel for each filter was stacked and stitched in pixinsight, and I did all the curves and RGB combining in photoshop. BlurXterminator and NoiseXterminator were used in pixinsight, but I tried to be delicate with them.

The full final mosaic is available in the revision list on the right. The featured image is a crop.

Final
Original
C
D

C

Title: Full Mosaic

Description: This is the full 2x3 mosaic

Uploaded: ...

D

Title: First stitch of the mosaic was rough

Description: Light pollution played havoc on the mosaic at first.

Uploaded: ...

SoCal Astrophotography
Cloudy Nights
Images from the EdgeHD Series
Orange County Astronomers

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Status	Advanced success
Started	...
Astrometry.net job	8526368
PixInsight job	LDA89I2LVCXJ39LXJ8ZZMYBNQ0XGT4M4
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	21h35m04s.336
RA (top/left)	21h39m19s.748
RA (top/right)	21h38m18s.844
RA (bottom/right)	21h30m38s.912
RA (bottom/left)	21h31m58s.350

Dec (center)	+57°57′48″.12
Dec (top/left)	+57°15′53″.43
Dec (top/right)	+58°45′26″.51
Dec (bottom/right)	+58°39′11″.89
Dec (bottom/left)	+57°09′48″.80

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6-Panel Mosaic of Elephant's Trunk from Bortle 9 (Crop)

6-Panel Mosaic of Elephant's Trunk from Bortle 9 (Crop)

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6-Panel Mosaic of Elephant's Trunk from Bortle 9 (Crop)

6-Panel Mosaic of Elephant's Trunk from Bortle 9 (Crop)

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