M13 and NGC 6207 (Wayne H)

Celestial hemisphere: Northern · Constellation: Hercules (Her) · Contains: HD150679 · HD150998 · Hercules Globular Cluster · IC 4617 · M 13 · NGC 6205 · NGC 6207

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M13 and NGC 6207

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M13 and NGC 6207

Took advantage of what appears to be one last clear night for a week or so and shot M13. Shot one-minute RGB subs to try to avoid blowing out the core. Took about an hour's worth of each starting at 10:50 and running through 2:30. Also shot a series of new flats as I'd done some camera rotation since the last ones. What I forgot to do was recalibrate PHD2 since it was calibrated at a different angle. I was wondering why my guiding was struggling until I thought of that this morning.

Same set up as last time - AP 130GTX at f/6.7, ASI 6200 MM Pro, Chroma RGB filters. Frankenstein processing combining Astro Pixel Processor, GraXpert, Pixinsight (for BlueXterminator and NoiseXterminator), and minor touchup with Photoshop. Turns out I probably could have used 30-second subs as the core was still too bright. Next time!

The attached photo is a very small crop of the original image. Other than the core, I'm pretty pleased with M13. I probably overprocessed with BlueXterminator (which is actually pretty hard to do) It really sharpened the stars, especially in the halo, but the small ones are only a few pixels in size so not very round if you pixel peep!

What most pleased me was how the galaxy NGC6207 (lower right) turned out. You can pick out parts of the blue spiral arms at about 11 o'clock, and other blue star forming regions on the other sides. The warmth of the core contrasts nicely. The bright dot in the middle that I though was the core appears to be star between us and the galaxy. I compared with on line images to make sure these details were real and not "made up" by the AI and I was able to find that they were.

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Status	Advanced success
Started	...
Astrometry.net job	7789209
PixInsight job	SRPHGUQ34BTNB9S3NQ40ZGUZ52UHRPAG
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	16h42m09s.209
RA (top/left)	16h40m47s.923
RA (top/right)	16h44m42s.197
RA (bottom/right)	16h43m31s.284
RA (bottom/left)	16h39m36s.340

Dec (center)	+36°35′53″.28
Dec (top/left)	+36°09′51″.20
Dec (top/right)	+36°35′15″.89
Dec (bottom/right)	+37°01′50″.17
Dec (bottom/left)	+36°36′17″.67

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M13 and NGC 6207

M13 and NGC 6207

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Image Index:

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M13 and NGC 6207

M13 and NGC 6207

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