NGC 1528 (hughsie)

Celestial hemisphere: Northern · Constellation: Perseus (Per) · Contains: NGC 1528

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NGC 1528

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NGC 1528

Coming off a full Moon, this evening didn't present many broadband opportunities. Ideally I wanted to use the ZWO ASI294MC camera for a single night project and as I like star clusters I chose NGC 1528.

Some of my other favourite targets are those contained in the Sharpless Catalogue and after examining some of the images here on Astrobin I soon became aware that Sh2-209 would fall into frame. Even though Sh2-209 is small I still wanted to get as much of this in the image as possible during one night and so added my Optolong L-Extreme filter to the filter wheel. This allows me to capture Hydrogen and Oxygen with a colour camera. I then split my imaging time between the Chroma UV/IR filter and the Optolong L-Extreme capturing the RGB of the star field and Ha and Oiii of Sh2-209 (admittedly SH2-209 revealed very little Oiii).

When it came to processing I used the WBPP script to calibrate and stack the RGB channels separately. I then used WBPP again to stack the HO channels. This resulted in four separate images, R, G, B and HO. The Ho, R and B channels were then Star Aligned against the Green channel to produce the same orientation in each.

Parking the narrowband image for now, I processed the RGB channels to create the coloured star field. I then commenced work on the HO image creating a starless version of Sh2-209 in red. This was then added to the RGB image using Pixel Math and resulted in the image we see here.

All the best,

John

Star Clusters

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	Image of the day	Top pick	Top pick nominations	Total submitted
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	Image of the day	Top pick	Top pick nominations	Total submitted
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The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
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Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status.
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Status	Basic success
Started	...
Astrometry.net job	9126056
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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