Celestial hemisphere:  Northern  ·  Constellation: Triangulum (Tri)  ·  Contains:  IC 131  ·  IC 132  ·  IC 133  ·  IC 135  ·  IC 136  ·  IC 137  ·  IC 142  ·  IC 143  ·  M 33  ·  NGC 588  ·  NGC 592  ·  NGC 595  ·  NGC 598  ·  NGC 604  ·  Triangulum Galaxy  ·  Triangulum Pinwheel
M33 - Triangulum Galaxy in HaLRGB, Leonid Michail Thomas Janitzky
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M33 - Triangulum Galaxy in HaLRGB

M33 - Triangulum Galaxy in HaLRGB, Leonid Michail Thomas Janitzky
Powered byPixInsight

M33 - Triangulum Galaxy in HaLRGB

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Description

Been a while, since I had time and the opportunity to capture a deep sky object. I had hoped to have more imaging time, but I guess you have to take what you get As soon as I get a chance to get more light from M33, I will go for it, because I think there is so much more detail to get in those lovely spiral arms!

First time I used Starkeeper Voyager for the imaging. After getting used to it, it is so robust and reliable to use. Just great!

Capturing images on 2021-10-27/28 with LRGBHa filters for a total of (3h28m/1h10m/1h1m/1h3m/6h10m)=12h53m, but used only the best (58/72/74/71/55%)=7h47m of all images. The images tossed away were the worst in regard to FWHM and median (#stars) due to wind blowing, neighbor's lights that went on from time to time, and the overall light pollution in the west.

Processing in PixInsight and final Stretching in Lightroom.

Since I am quite new to PixInsight and processing data, I am not sure if I might have done it ok or maybe overdid it (i.e. the sharpening or creating the right mask for the denoise).

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  • M33 - Triangulum Galaxy in HaLRGB, Leonid Michail Thomas Janitzky
    Original
  • Final
    M33 - Triangulum Galaxy in HaLRGB, Leonid Michail Thomas Janitzky
    B

B

Description: I did not like the grainy spiral arms as well as the amplified halos of the bright stars. I found out, that this was due to the Arcsin-Stretch, which I had applied prior to the Masked-Stretch. Now I skipped the ArcSin-Stretch and reprocessed the image more or less the same.

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M33 - Triangulum Galaxy in HaLRGB, Leonid Michail Thomas Janitzky

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Astrophotography Germany