ic443 - 900 60 secs unguided subs of 21st and 22nd January 2022 +175 of 25th of january 2022 (Stefano Ciapetti)

ic443 - 900 60 secs unguided subs of 21st and 22nd January 2022 +175 of 25th of january 2022

Link to TIFF/FITS: https://ramfis.info/ic443_17h9m.zip

This image is the sum of 900 60 secs unguided subs taken during the nights of the 21st and 22nd January 2022 from my bortle 8 home terrace. Imaging train was Canon 70-200 F4 lens (used at 200 F4 FL), an ASI 533 camera, Ioptron L-Extreme filter and an Ioptron Smart Eq mount. Aquisition with Astroart 8, stacking with DSS, processing with Astroart 8 (crop, gradient removal, deconvultion, stretching). During these 2 nights of exposures I have used my modified autocenter script. It worked perfectly for both nights. Modification was basically done changing the connection system to the mount. On the previous version the mount was always connected and centered the object when it was too far from the center. Now the mount is always disconnected and Astroart 8 connect it only when it's time to center the object. In this way I have solved the "meridian flip" issue. On previous version, after meridian flip the mount had several issues, losing the object. Now it worked perfectly.
These nights had some issues. Cold, wet (when I took inside the instruments they were freezed) and windy. Some high moon as well. This subject needs more data. I will try to add that soon.

IC 443 (also known as the Jellyfish Nebula and Sharpless 248 - Sh2-249 - is a galactic supernova remnant (SNR) - in the constellation Gemini. On the plane of the sky, it is located near the star Eta Geminorum. Its distance is roughly 5,000 light years from Earth.
IC 443 may be the remains of a supernova that occurred 3,000 - 30,000 years ago. The same supernova event likely created the neutron star CXOU J061705.3+222127, the collapsed remnant of the stellar core. IC 443 is one of the best-studied cases of supernova remnants interacting with surrounding molecular clouds (wikipedia)

Original
Final
B

B

Description: added a couple of hours

Uploaded: ...

Camera Lens Astrophotography
ASI533MC Pro
Imagers of Italy
Low-Cost Astrophotography

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Status	Advanced success
Started	...
Astrometry.net job	5435903
PixInsight job	0G4ZCT54LAXB99A27PB58T2XZ9WCNP8R
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	06h17m01s.28
RA (top/left)	06h10m00s.64
RA (top/right)	06h24m34s.28
RA (bottom/right)	06h23m51s.49
RA (bottom/left)	06h09m37s.99

Dec (center)	+22°46′44″.5
Dec (top/left)	+24°29′27″.9
Dec (top/right)	+24°21′39″.8
Dec (bottom/right)	+21°02′54″.4
Dec (bottom/left)	+21°10′18″.7

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