Celestial hemisphere:  Northern  ·  Constellation: Monoceros (Mon)  ·  Contains:  12 Mon  ·  NGC 2237  ·  NGC 2238  ·  NGC 2239  ·  NGC 2244  ·  NGC 2246  ·  NGC 2252  ·  Rosette A  ·  Rosette B  ·  Rosette Nebula  ·  Sh2-275  ·  The star 12Mon
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Rosette nebula - so many different roses, Ian Dixon
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Rosette nebula - so many different roses

Getting plate-solving status, please wait...
Rosette nebula - so many different roses, Ian Dixon
Powered byPixInsight

Rosette nebula - so many different roses

Equipment

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Acquisition details

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Description

The Rosette Nebula- so many different roses!

Imaged south of my city, near the hamlet of St. Agathe, MB. This is the first time I have imaged this, and am quite excited to get this nice winter deep space object!

Gleaned and paraphrased from SkySafari:

The Rosette Nebula is a large, circular emission nebula in the constellation Monoceros, close to Orion, right now in the southern skies @ 49*N. It surrounds a cluster of hot, young stars known as the Rosette Cluster (NGC 2244). The brightest parts of the nebula have their own NGC catalog numbers.

Its a cloud of dust and gas extending over 1°, an area about 5 times that of the full moon. With a total magnitude of 4.8, the star cluster NGC 2244 is visible in binoculars, and seen quite well in small telescopes.

Equipment:

Small 70mm apo scope

ASI 2600 mc camera, gain 0, chip at -20*C

Guided with super old Tasco 360mm doublet

ASIair raspberry Pi to schedule

200 minutes total integration

Calibrated with 10 darks

Processing:

Software for stacking is Astropixel processor

Pixinsight for noise reduction, HDR, stretching, and star reduction using intrinsic with starnet++. I couldn't figure out deconvolution in this trial.

My next goal is to use PI for stacking as well.

Thanks for looking!

Comments

Revisions

  • Rosette nebula - so many different roses, Ian Dixon
    Original
  • Rosette nebula - so many different roses, Ian Dixon
    B
  • Rosette nebula - so many different roses, Ian Dixon
    C
  • Rosette nebula - so many different roses, Ian Dixon
    D
  • Rosette nebula - so many different roses, Ian Dixon
    E
  • Rosette nebula - so many different roses, Ian Dixon
    F
  • Rosette nebula - so many different roses, Ian Dixon
    G
  • Final
    Rosette nebula - so many different roses, Ian Dixon
    H

B

Description: This is a luminence temp file created in Pixinsight during masking for star reduction. I was happy with the star reduction in this trial. I spent nearly two hours on it, my first effort. I thought it looked kind of cool, especially since I have never shot mono, let alone luminance subs. So I am temporarily showcasing it.. :^)

Uploaded: ...

C

Description: This is my version with star reduction completed in PI, using Starnet++. I clipped out some of the signal so will call this a fail.

I need to calibrate the star colours next. :)

Uploaded: ...

D

Description: Getting closer on star colours, but will go back to PI to reduce them.

Uploaded: ...

E

Description: Cropped version of Pixinsight's "lightness" mask for star reduction.

Uploaded: ...

F

Description: More tweaking in PI, with noise reduction.

Uploaded: ...

G

Description: Final version; as always I am interested in your critical comments. If you have a preference for any of these Rosette versions, please let me know. Thanks for looking!

Uploaded: ...

H

Description: Deconvolution and a bit more Star reduction in PI. I finally learned how to sharpen my image with a non-invasive deconvolution step in PI. I routinely ground the data to hamburger, but am happy to say that this version is getting close.

Uploaded: ...

Sky plot

Sky plot

Histogram

Rosette nebula - so many different roses, Ian Dixon