Observation by Martin Butcher: IC 2118 - The Witch Head Nebula.

Uploaded by

Stuart Morris

Observer

Martin Butcher

Observed

2009 Dec 13 - 00:05

Uploaded

2021 Mar 26 - 17:08

Objects

The Witch Head Nebula (IC2118)
NGC1726

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Constellation

Eridanus

Field centre

RA: 05^h05^m
Dec: -07°04'
Position angle: -1°20'

Field size

3°11' × 2°06'

Equipment

Meade LX-90 8" telescope fitted to its field tripod by an equatorial wedge.
LX-90 Periodic Error Correction enabled.
Dew Removal straps fitted to telescope and camera lens
Telescope driven but unguided
Telescope and camera powered by Mains Power.
Stock Canon 40D with 200mm f/2.8 lens stopped down to f/4

Exposure

Six sub-exposures each 5 minutes long taken at ISO400.

Location

Isle of Colonsay

Target name

IC 2118

Title

IC 2118 - The Witch Head Nebula.

About this image

IC 2118, known as The Witch Head Nebula. It is a reflection nebular in the constellation Eridanus but associated with the bright star Rigel in the constellation Orian.

Equipment used:- Stock Canon 40D with 200mm f/2.8 lens mounted piggy-back on Meade LX-90 8" telescope fitted to its field tripod by an equatorial wedge. Telescope polar aligned. LX-90 Periodic Error Correction enabled. Dew Removal straps fitted to telescope and camera lens and operating. Telescope driven and manually guided. Telescope and camera powered by Mains Power.

Exposure details:- Six sub-exposures each 5 minutes long taken at ISO400. Ambient temperature minus 3 degrees Celsius.

Processing details:- After quality control 5 sub-exposures calibrated with Dark, Flat-field and Bias master frames before being combined in Images Plus. Image then further processed in Photoshop CS3 and Noise Ninja. North is at the top.

Narrative description:- Twenty six days after New Moon. The weather was cold, calm and clear with heavy dew.

Files associated with this observation

MButcherIC2118.jpg (363.3 kB)

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Simon Paul Davis

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