Celestial hemisphere:  Southern  ·  Constellation: Aquarius (Aqr)  ·  Contains:  Helix nebula  ·  NGC 7293  ·  PK036-57.1
Helix in Ha, Alan
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Helix in Ha

Helix in Ha, Alan
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Helix in Ha

Equipment

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Acquisition details

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Description

Ha

30x600s

Looking at noise, I should have dithered

PI work flow

Dynamic crop

DBE

Noise reduction with ATVW

Deconvolution (PSF, Starmask with convolution; lum mask)

Stretch with HST

Lower black point (HistogramTransformation)

Noise reduction ATVW, ACDNR

LHE

HDRMultiscaleTransform; protect background with mask

Morphological Transformation (morphological selection)

Curves to adjust the background

Comments

Sky plot

Sky plot

Histogram

Helix in Ha, Alan

In these public groups

Cloudy Nights

In these collections

Narrowband