Hemisphere:  Northern  ·  Constellation: Auriga (Aur)  ·  Contains:  IC 417  ·  NGC 1931  ·  The star φAur
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IC 417 & NGC 1931 Spider & the Fly Nebulae, 



    
        

            Mike Oates
IC 417 & NGC 1931 Spider & the Fly Nebulae
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IC 417 & NGC 1931 Spider & the Fly Nebulae

Getting plate-solving status, please wait...
IC 417 & NGC 1931 Spider & the Fly Nebulae, 



    
        

            Mike Oates
IC 417 & NGC 1931 Spider & the Fly Nebulae
Powered byPixInsight

IC 417 & NGC 1931 Spider & the Fly Nebulae

Technical card

Imaging telescopes or lenses: Takahashi FSQ-106 ED

Imaging cameras: Starlight Xpress SX-814 Trius Monochrome CCD

Mounts: Sky-Watcher EZ-EQ6 GT

Guiding cameras: Starlight-XPress Lodestar Autoguider

Software: Sequence Generator Pro  ·  Photoshop CS6  ·  PIXINSIGHT 1.8

Filters: Red  ·  Green  ·  Blue  ·  Ha 5nm

Accessory: Lakeside Astro Motor Focus System  ·  Starlight Instruments FTF3545B-A Focuser  ·  Starlight-XPress Filter Wheel


Dates:Feb. 28, 2016

Frames: 32x900" (8h)

Integration: 8h

Avg. Moon age: 19.93 days

Avg. Moon phase: 72.74%


Basic astrometry details

Astrometry.net job: 1799384

RA center: 5h 29' 9"

DEC center: +34° 29' 45"

Pixel scale: 1.436 arcsec/pixel

Orientation: 359.992 degrees

Field radius: 0.889 degrees


Resolution: 3410x2868

Locations: The Hills Observatory, Manchester, United Kingdom

Data source: Backyard

Description

I was experimenting with different bins with this image. The conclusion for Ha at least, don't bother stick to bin 1x1. With other bins the resolution is quite poor especially bin 4x4.

But the result was ok in the end. This is basically a Ha image, but I took 10 x 1min subs for R G & B and added those in with Ha to get coloured stars. The aim of this image was to go deep and I think I managed that with lots of faint nebula.

The actual sub exposures were (taken 20151224 to 2016022 :

Ha

900s x 8 bin1

1200s x 13 bin1

900s x 4 bin4

900s x 3 bin2

RGB

60s x 10 of each bin1

Update: As my processing has improved over the years I thought I would re-work this image as it was one I was not happy with. This is a Ha image with added RGB stars, but not done very well. So I went back to the calibration and completely re-processed this image without adding any more data. The result is more detailed, stars that are no longer bloated and the right colours.

Comments

Revisions

  • IC 417 & NGC 1931 Spider & the Fly Nebulae, 



    
        

            Mike Oates
    Original
  • Final
    IC 417 & NGC 1931 Spider & the Fly Nebulae, 



    
        

            Mike Oates
    B

B

Description: Completely re-processed

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IC 417 & NGC 1931 Spider & the Fly Nebulae, 



    
        

            Mike Oates