Description

IC417 & NGC1931 (small nebula in the center of center) are also sometimes referred to as “The Spider and the Fly” the resemblance does however not show from this image as it needs a lot more exposure time (preferably Ha) to bring out the fainter details of IC417 (also known as Sharpless 234)

The object is located in the constellation Auriga and is near IC405 and IC410.
Both nebulae are about 10.000 light-years distant and are embedded in glowing hydrogen gas.

The open star cluster visible on the left side of the image is Messier 36.
Check the annotated version below to identify all the objects in the image.

Previous/older images:

Nov 21, 2011 – ST-8300M (80mm TMB-1h 36m)

Image data

Object info
Name NGC1931 & IC417 – The Spider and the Fly
Type Emission nebula
Constellation Auriga
Right ascension 05h 28m 06s
Declination +34° 25′ 26″
Distance 10.000 ly
Other designations Sh2-234
Image info
Image date Dec. 03, 2016
Light frames 5x 4 min. RGB (each) unbinned, 6x 10 min. 7nm Ha unbinned (Luminance)
Total integration 2h
Dark frames info n/a
Flat frames info n/a
Bias frames info n/a
Software used SGPro, PHD2 Guiding, DeepSkyStacker, Registar, Photoshop CS6
Processing Focusing and image acquisition was done using Sequence Generator Pro.
All separate frames were calibrated, aligned and stacked in DeepSkyStacker.
Images were aligned in Registar prior to combining into RGB.
Photoshop CS6 was used for further processing – curves adjustment, levels adjustment, etc.
Noel Carboni’s toolset was used as well (Local Contrast Enhancement, Deep Space Noise Reduction)
Equipment info
Telescope TMB/LOMO 80/480
Corrector Televue 2″ TRF 2008 flattener/reducer (FL: 384mm f/4.8)
Mount Losmandy G-11 Gemini
Camera SBIG ST-8300M
Guide camera Astrolumina ALccd5-II (Mono)
Guide scope Starwave 50mm f/4.1 Guide Scope
Autoguide software PHD2 Guiding
Filters Baader 2″ 7nm Ha, Baader 2″ RGB + IDAS LPS-P2
Location Landgraaf, The Netherlands
Image comments

Definately need more exposure time for this object.
Especially to bring out the fainter details in H-alpha of IC-417.