The Spider & The Fly Nebulae in H-alpha
In the constellation Auriga, lies this interesting pair of nebulae. The small patch of nebulosity in the upper left is designated NGC1931, but better known as The Fly Nebula and The Spider Nebula, center of image, has the designation IC417. The Spider is around 10,000 light-years distant from earth, while The Fly is around 7,000 light-years away. Both are emission nebulae, but the smaller, Fly Nebula, also consists of reflection nebulosity. Because this nebula consists of both refection and emission nebulosity and contains a trapezium set of stars at its center, it has been referred to as a "miniature Orion Nebula." The Spider Nebula is also included in the Sharpless catalog as object 237 (Sh2-237).
This image is a 2-panel mosaic. It was our first time doing a mosaic on a deep sky object.
- Telescope: Stellarvue SVR105 Raptor @ f/7
- Mount: Software Bisque Paramount MyT
- Camera: QSI683wsg-8 CCD @ -15.0C
- Guiding: Starlight Xpress Lodestar X2
- Filters: Astrodon 5nm Ha
- Accessories: Gerd Neumann Aurora flat panel; Dew control by DewBuster
- Exposure: 18 x 20min. binned 1x1, each panel
- Acquisition:Software Bisque TheSkyX and CCD AutoPilot
- Processing: PixInsight 1.8
- Date(s): October 16, 17, and 22, 2016
- Location: Portland, TN, USA
nebulanebulaeHanarrowbandH alphaBWspiderflyspider and flyspider flyspider nebulafly nebulaspider and fly nebulaesharplessIC417NGC1931IC 417NGC 1931Sharpless 237
From Hydrogen-alpha Images