IC443 and Sharpless 249, 


IC443 and Sharpless 249, 



Technical card

Imaging telescopes or lenses: William Optics Star 71

Imaging cameras: Atik 460 EX

Mounts: Astro-Physics Mach1AP GTO with GTOCP3

Guiding telescopes or lenses: Orion Mini 50mm Guide Scope

Guiding cameras: Orion StarShoot Autoguider

Software: PHD guiding  ·  SequenceGeneratorPro  ·  photoshop  ·  Pleiades Astrophoto PixInsight 1.8 Ripley  ·  CCDStack 2+

Filters: Ha 3nm

Accessory: Atik EFW2

Basic astrometry details

Astrometry.net job: 631850

Resolution: 2000x1322

Locations: Meadowlark Ridge Observatory, New Glarus, Wisconsin, United States


In the lower right portion of this image lies IC 443 or the Jellyfish Nebula. It is the beautiful remnant of a supernova explosion thought to have occurred approximately 35,000 years ago. A neutron star lies buried deeply within this nebula and is all that remains of the original star.

To its left in this image is an extremely large emission nebula cataloged as Sharpless 249. Within this nebula – visible near the top and left of center is the recently discovered planetary nebula Howell – Crisp 1 (HoCr1). In this image it is not much bigger than some of the stars and appears as a faint grey fuzzy spot.

The two brightest stars in this image are Mu and Eta Geminorum.

This is a two panel mosaic taken through a William Optics Star71 and a 3nm hydrogen alpha filter on 1/18, 2/9 & 2/19/2015 - mounted on an AP Mach1. Total exposure 5h 40m.



IC443 and Sharpless 249,