IC443 Jellyfish Nebula (Walter Torres)

IC443 Jellyfish Nebula

This image was taken from my backyard in Oswego, IL during the nights of Jan 9, 10,11, 22, 21, and 24 during clear patches between the clouds. Sadly I ended up having to discard almost half of my data due to a weird "moon-shaped" reflection that I can only assume came from my OAG prism reflecting light back to my FF/FR then back to my camera sensor (the moon was really bright and high in the sky during this time) which I could not calibrate out with flats.

Regardless, I am very pleased with the way this image came out, not necessarily because the image itself is anything special, but because it was a proof of concept for me. You see, I used to have an Askar FRA500 scope which I upgraded to my FSQ85EDX. But when I sold my FRA500 the buyer was not interested in the focal reducer for it and I got stuck with it. At some point it hit me that I might be able to use the Askar reducer on the FSQ85 since they are somewhat similar scopes. i.e. both are Petzval scopes with similar focal lengths, 85mm vs 90mm. I placed an order for a custom adapter from Moonlite and mounted it on my Tak, knowing I was gamble. This was the first image that I took with the combination and from the looks of it I need to dial in my backspacing a tad bit and maybe have some tilt somewhere to sort out, but if it works out it will be a very nice combo and at less than 1/3rd the price of the legit Takahashi reducer.

Image details:
Ha 45x300sec (3hrs, 45min)
Sii 43x300sec (3hrs, 35min)
Oiii 42x300sec (3hrs, 30min)
All subs taken at gain 121, -20C, and dithered every frame. Calibrated with darks, flats, and flat darks. Stacked and processed with PixInsight and minor touches in Photoshop. Image is cropped about 10-15% to get rid of dithering and stacking artifacts and has been reduced to stay within Astrobin's basic membership upload size limit.

N.I.N.A. Users

	Distinct awarded users	Total awarded images
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	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
Solar system
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Noctilucent clouds
Landscape

	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
Own remote observatory
Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
Mix of multiple sources
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Unknown

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Status	Basic success
Started	...
Astrometry.net job	5786639
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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IC443 Jellyfish Nebula

IC443 Jellyfish Nebula

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