SH 2-248, Jellyfish Nebula Optics: Borg 101ED
at f/4.1 Mount: Paramount MX
using The SkyX Pro Camera: QSI 683WS-8 Filters: Astrodon
Ha 3nm, OIII 3nm, SII 3nm Exposure:
2440 Mins or 40 2/3 hours, [26 2/3 Ha, 8 1/3 OIII, 5 2/3 SII], Binned 1x1, 1200s exposures Accessories:
Auto guided with Borg 45ED & Starlight Xpress Lodestar
. Feathertouch focuser using FocusMax 3.8.0 Location:
Burlington, ON Date:
Taken over several nights and several months from October 23rd, 2015 to April 29th, 2016 Notes:
Image acquisition with Maxim DL Pro
Processing: Image calibration, align, and combine in Maxim DL Pro. Levels, curves, cosmetic adjustments and crop/resize in Photoshop.
Calibrated w/20 Darks, 100 Bias, 50 Flats of each filter using a flat pannel.
CCD temperature was -25C. Image was taken from my backyard Observatory
. Published in Sky & Telescope: http://astromarina.zenfolio.com/p498178330/heca0746#heca0746
Link to Ha image:http://astromarina.zenfolio.com/p264248004/h7644d2f0#h7644d2f0 IC 443
(also known as the Jellyfish Nebula
and Sharpless 248
)) is a Galactic supernova remnant
(SNR) in the constellation Gemini
. On the plan of the sky, it is located near the star Eta Geminorum
. Its distance is roughly 5,000 light years
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.