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


            Robert Eder
The Spider and the Fly
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The Spider and the Fly

Technical card

Imaging telescopes or lenses: 2x Sky-Watcher 130/650 PDS Newton

Imaging cameras: Canon 600Dac

Mounts: SkyWatcher EQ6-R Pro

Guiding telescopes or lenses: Sky-Watcher Finderscope 9X50

Guiding cameras: ZWO ASI 120 MM Mini

Software: PHD2  ·  APT  ·  Astro Pixel Processor  ·  Astronomy Tools Action Set  ·  SharpCap3Pro  ·  Photoshop

Filters: OPTOLONG L-eNhance  ·  Astronomik L2 UV/IR Block

Accessory: Baader MPCC-III

Dates:Feb. 14, 2021

130x180" ISO800
OPTOLONG L-eNhance: 40x600" ISO1600

Integration: 13.2 hours

Darks: ~20

Flats: ~30

Bias: ~50

Avg. Moon age: 2.63 days

Avg. Moon phase: 7.61%

Bortle Dark-Sky Scale: 4.00

Basic astrometry details

Astrometry.net job: 4265796

RA center: 5h 29' 10"

DEC center: +34° 22' 37"

Pixel scale: 2.499 arcsec/pixel

Orientation: 1.134 degrees

Field radius: 1.040 degrees

Resolution: 2500x1655

Locations: Hohe Wand, Wildgehege, Austria

Data source: Traveller


My second project with the Dual Setup. The little Newtonians have the perfect focal lenght for this object. It was bitterly cold, but the first clear sky in over four weeks and the transperancy was great. The processing wasn't easy this time. I had to stretch it pretty hard, because the legs of the spider are very faint. As usual a mix of RGB (OSC) and HOO from the Dual-filter.


Sky plot

Sky plot


The Spider and the Fly, 


            Robert Eder

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