Celestial hemisphere:  Northern  ·  Constellation: Triangulum (Tri)  ·  Contains:  M 33  ·  NGC 598  ·  Triangulum Galaxy  ·  Triangulum Pinwheel
Getting plate-solving status, please wait...
M33 / The Triangulum Galaxy in LHaRGB, Brent Newton
M33 / The Triangulum Galaxy in LHaRGB
Powered byPixInsight

M33 / The Triangulum Galaxy in LHaRGB

Getting plate-solving status, please wait...
M33 / The Triangulum Galaxy in LHaRGB, Brent Newton
M33 / The Triangulum Galaxy in LHaRGB
Powered byPixInsight

M33 / The Triangulum Galaxy in LHaRGB

Equipment

Loading...

Acquisition details

Loading...

Description

One of my favorite objects - I've always thought the arms on this object (and M101) look like a deep sea squid. This will likely be the last image taken by my AT72ED. Given my acquisition of a mono astronomy camera, the fact that I now take seperate R/G/B subs means the star discoloration can no longer be ignored. In fact, I had to re-shoot the RGB images since a previous set of images were unable to even align the stars correctly

**Pre-processing of L, Ha, R, G, B sets**

- Calibration using Master Dark, Flat, Bias

- Subframe Selector for image weight

- Star Align and Local Normalization

- Drizzle Integration

- Dynamic Crop

- Several passes of Dynamic Background Extraction for each channel

**Luminance Processing**

- Deconvolution using DynamicPSF and Luminance Mask

- TGV and MLT noise reduction using Jon Rista method

- Standard STF Stretch

- StarMask + MorphologicalTransformation for star reduction, second pass for largest stars

- PixelMath to add Ha to L using "Max(Lum, Ha*1.1)"

**Ha/RGB Processing**

- Linear Fit R and G to B Channel

- Pixel Math to combine R and Ha channels using "(Ha*0.8)+(R*0.64)"

- RGB Combination of HaR/G/B

- CloneStamp to remove streaked asteroid / satellite

- Background Neutralization using Aggregated previews

- Photometric Color Calibration

- SCNR-Green using inverted G channel as a mask

- RGV and MLT noise reduction using Jon Rista method

**Combined Processing**

- Convoluted color image (slight blur to color)

- LRGB Combination

- Curves for slight background desaturation using L mask

- More Curves and Histogram Saturation and Levels tweaks to enhance galaxy color and keep background down

- Image ported to PS for Signature and cropping

- Image copied for Image Solving & Annotation

Comments

Revisions

  • Final
    M33 / The Triangulum Galaxy in LHaRGB, Brent Newton
    Original
  • M33 / The Triangulum Galaxy in LHaRGB, Brent Newton
    B

B

Description: Annotated - several background PGC galaxies have been marked

Uploaded: ...

Sky plot

Sky plot

Histogram

M33 / The Triangulum Galaxy in LHaRGB, Brent Newton

In these public groups

Central USA

In these collections

ASI1600MM-P 350mm FL
DSO