The jellyfish Nebula (IC443) is most likely the remnants of a supernova ~5000 light years away. At 70LY across, its apparent size in the night sky is ~2x the full moon.
This was shot on an ASI2600MC pro and askar 71f (490mm), with 2x drizzle then a 50% crop to hopefully let some of the details in the upper shell sneak through the dreaded reddit compression. 2 hours is definitely not enough, so more to come (assuming we ever see the sky again, the forecast shows a few hours 12 days from now 🥲)
Full capture details below!
by Spitzbue
1 Comment
Gear:
* ASI2600MC Pro on an askar 71f (490/71mm, f6.9)
* ASI120mm mini guide cam on an SVbony 40mm guide scope
* ASIAIR mini
* ZWO AM5N mount
* ZWO EAF
* Svbony 260 UHC Filter
Capture:
* 50x180s lights, 100 gain, 0C cooling.
* 20 flats
* 20 bias
* 20 darks
Processing: (APP stack, Processing in PixInsight)
* Stacked in APP, 2x Drizzle. For some reason Pix could not normalize the third group post meridian flip and 3 days of troubleshooting didn’t solve things (their website was also under maintenance so that didn’t help lol)
* BlurX Correction only
* Spectro. flux calibration
* Multiscale gradient correction
* Spectro color calibration
* StarX
* stretch on starless and stars
* fine tuning and saturation adjustment with curve adjustments
* Pixel math multiplication for recombination
* final histogram stretch
* NoiseX + BlurX
* export straight from Pix