Sh2-140, 145 Area, Ha (Stephen Garretson)

Sh2-140, 145 Area, Ha

Here is an Ha image of this region of H-alpha in Cepheus, located just east of the Elephant Trunk Nebula. The bright area left is Sh2-140; the nebulosity up and to the right of 140 is 145. Data collected last night and the previous night. Last night saw high clouds moving through and several of the frames were pretty washed out compared to the previous night. But I was able to extract much of the background junk and use these to keep the data set largely intact. I also used a new-to-me process in PixInsight that allowed for great removal of satellite tracks that were not caught in CosmeticCorrection,; these frames were kept in the data set. Going to incorporate that algorithm into my workflow.

[23] 600s Ha 3.5nm guided subs
total integration: 3 hours, 50 minutes

image capture:
Borg 107FL f/3.9 Astrograph
ASI 2600MM Pro
SX USB filter wheel
Baader 3.5nm Ha filter

guiding:
William Optica RedCat f/4.9 Petzval Astrograph
ASI 290M Mini

TheSkyX, SGP, PHD2
Paramount MX+
from the Beevo Dome

PixInsight, Topaz DeNoise AI, Mac OS Photos, Preview

...Stephen

The refractors!

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Unknown

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Status	Basic pending
Started	...
Astrometry.net job	5801615
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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