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BAA Images Dr Ollie Garrett

Observation by Dr Ollie Garrett: NGC 2239 The Rosette Nebula

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Dr Ollie Garrett

Observer

Dr Ollie Garrett

Observed

2017 Jan 19 - 20:35

Uploaded

2017 Feb 17 - 01:02

Objects

NGC2239
NGC2237
NGC2246

Planetarium overlay









Constellation

Monoceros

Field centre

RA: 06h31m
Dec: +04°55'
Position angle: +86°57'

Field size

1°16' × 0°57'

Equipment
  • 115mm f7 APO refractor
  • NEQ6 mount
  • SBIG STF-8300M CCD
  • SX Lodestar and SX Off Axis Guider
  • Baader 36mm unmounted filters in SX USB filter wheel
Exposure

Sulphur II: 2 x 1200 secs, Hydrogen Alpha: 2 x 1200 secs, Oxygen III: 2 x 1200 secs

Location

Dartmoor, UK

Target name

NGC2239

Title

NGC 2239 The Rosette Nebula

About this image
Subframes were captured between 20:35 and 23:05
Ambient temperature: 1 degree C
Camera sensor temperature: -20 degrees C
Seeing (Pickering Scale): 7 (Good)
Transparency (AAAA scale): 6 (Very Clear)
SQM reading: 20.36
Data acquisition and processing software: Nebulosity, PHD2, Photoshop and Pixinsight.
A work in progress, and the product of data collected on a single night, this observation ideally requires a good deal more exposure in its component channels to achieve the best possible signal to noise ratio. Even so, I believe the final image does represent a considered effort throughout processing to handle the collected data sensitively. 
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