NGC 6995 – Beneath the Veil (Alex Woronow)

NGC 6995 – Beneath the Veil

NGC 6995 – Beneath the Veil

OTA:……………….CDK17
Camera:………….FLI Proline 16803, 9 micron pixels, 0.64 arcsec/pxl
Observatory:…. Rodeo, NM

EXPOSURES:
…R……13 x 900 sec.
…B…...13 x 900
…G……11 x 900
…L…….23 x 900   (not used)
…O.….16 x 1800
…H.….17 x 1800
…S.….16 x 1800
Total exposure   37 hours

Image Width: ~41.5 arc-minutes
Processed by Alex Woronow (2020) using PixInsight, StarXTerminator, Topaz, SWT

Image A: 40% of full resolution
Image B: 100% of full resolution

Taken literally, one might expect the “Veil Nebula” to be a soft gauzy texture. But, ripping away the veil, reveals an underlying tangled and turbulent texture becomes evident.

The formula for this image entailed using the RGB and the SHO to generated estimates of the pure Ha, SII, and OII lines (w/o the background radiation always present in narrowband-filter images). Those emission lines were combined with the appropriate RGB broadband filters to produce the color image. The OIII and Ha lies were combined, sharpened, and serve as the luminance channel behind the RGB image. All this was done starlessly with the aid of StarXTerminator. The stars were reintroduced using an algorithm I developed that effectively retained the calibrated star colors.

Hope you like it,
Alex

Original
Final
B

B

Description: Image at 100% (full) resolution. Very large (~75MB). Proceed with care!

Uploaded: ...

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Status	Basic failed
Started	...
Astrometry.net job	5109581
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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