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BAA Images Alun Halsey

Observation by Alun Halsey: Jellyfish Nebula two pane mosaic

Uploaded by

Alun Halsey

Observer

Alun Halsey

Observed

2021 Jan 22 - 01:40

Uploaded

2021 Jan 22 - 19:41

Objects

IC443

Planetarium overlay









Constellation

Gemini

Field centre

RA: 06h18m
Dec: +22°37'
Position angle: +48°32'

Field size

1°52' × 1°34'

Equipment
  • Evostar 72ED apo with field flattener
  • SX Trius 694 with Ha filter
  • CEM60 carrying C9.25 sct
  • QHY5L-II colour camera with 0.5x reducer
Exposure

4x900sec for both sections of mosaic.

Location

Reading Berkshire UK

Target name

Jellyfish Nebula

Title

Jellyfish Nebula two pane mosaic

About this image

72ED and SX Trius 694 + Ha filter piggybacked to C9.25 on a CEM60 to capture two sets of four 900sec subframes to create a mosaic. Stacked and dark frame subtracted in Deepskystacker,mosaic stitched and processed in Photoshop CS2. Autoguided using C9.25 and QHY5L-II colour camera with 0.5x reducer screwed into nosepiece.

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