Hemisphere:  Northern  ·  Contains:  24 phi Aur  ·  IC 417  ·  IC417  ·  Sh2-234  ·  The star φAur
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IC 417 - "The Spider" in SHO, 


            Chris Massa
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IC 417 - "The Spider" in SHO

Imaging telescopes or lenses: TPO 10" f/4 Newtonian

Imaging cameras: ATIK 383L+ mono

Mounts: Software Bisque Paramount MX+

Guiding cameras: Lodestar X2

Software: Sequence Generator Pro  ·  Pixinsight  ·  PHD2

Filters: Baader Planetarium SII 36mm 8nm  ·  Baader Planetarium Ha 36mm 7nm  ·  Baader Planetarium OIII 36mm 8.5nm

Accessory: Orion Thin Off Axis Guider (TOAG)  ·  RIGELSYS USB-nSTEP Focuser  ·  ATIK EFW2, 7x36mm Filter Wheel

Dates:Dec. 5, 2016Dec. 9, 2016Dec. 14, 2016

Baader Planetarium Ha 36mm 7nm: 31x1200" -26C bin 1x1
Baader Planetarium OIII 36mm 8.5nm: 38x1200" -20C bin 1x1
Baader Planetarium SII 36mm 8nm: 36x1200" -20C bin 1x1

Integration: 35.0 hours

Avg. Moon age: 10.16 days

Avg. Moon phase: 67.83%

Astrometry.net job: 1401509

RA center: 5h 28' 12"

DEC center: +34° 25' 21"

Pixel scale: 1.103 arcsec/pixel

Orientation: 88.885 degrees

Field radius: 0.627 degrees

Resolution: 3284x2444

Locations: Home Observatory, Chico, CA - California, United States

Data source: Backyard


My FOV didn't let me get "The Fly" as well and I wasn't up for doing a mosaic currently. Tough process. Almost no OIII signal so I added a little Ha to OIII for the blue channel.



Chris Massa
License: None (All rights reserved)


  • IC 417 - "The Spider" in SHO, 


            Chris Massa
  • Final
    IC 417 - "The Spider" in SHO, 


            Chris Massa

Sky plot

Sky plot


IC 417 - "The Spider" in SHO, 


            Chris Massa

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Narrowband imaging