Celestial hemisphere:  Northern  ·  Constellation: Monoceros (Mon)  ·  Contains:  NGC 2237  ·  NGC 2238  ·  NGC 2239  ·  NGC 2246  ·  NGC 2252  ·  Rosette A  ·  Rosette B  ·  Rosette Nebula  ·  The star 12 Mon
The Rosette in Narrowband, Don Walters
The Rosette in Narrowband
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The Rosette in Narrowband

The Rosette in Narrowband, Don Walters
The Rosette in Narrowband
Powered byPixInsight

The Rosette in Narrowband

Equipment

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Acquisition details

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Description

First light with my new ASI1600MM-Cool. Nice being able to get bigger targets! Since this was just a warm-up image, I just went with Unity gain at 5-min subs.

PI Processing is as follows:

Calibrated my Flats with Flat-Darks (no bias).

Calibrated my lights against a master dark and master flats (no bias).

(Integrated everything with Winsoried clipping)

Drizzle up by 2x

Cropped slightly

Resample down by 1/2.

DBE to each master (Ha/OIII/SII)

MLT (noise reduction) to each master

Linear fit using OIII (applied to Ha and SII)

Combined using Pixelmath (OHS)

Histogram transformation

Unsharp mask (with star mask in place)

HDRMT

Curves Transform to de-saturate the stars a little

Comments

Revisions

  • The Rosette in Narrowband, Don Walters
    Original
  • The Rosette in Narrowband, Don Walters
    C
  • Final
    The Rosette in Narrowband, Don Walters
    D

C

Description: Reprocessed to RGB color scheme.

HT, ACDNR, HT again, UnsharpMask, HDRMT, ExpTrans.

Uploaded: ...

D

Description: Re-processed with BXT and NXT.

Uploaded: ...

Sky plot

Sky plot

Histogram

The Rosette in Narrowband, Don Walters

In these public groups

Beginners AP