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BAA Images Dean Ashton

Observation by Dean Ashton: The Bubble

Uploaded by

Dean Ashton

Observer

Dean Ashton

Observed

2017 Sep 29 - 20:52

Uploaded

2018 Mar 21 - 12:40

Objects

NGC7635

Planetarium overlay









Constellation

Cassiopeia

Field centre

RA: 23h20m
Dec: +61°12'
Position angle: +0°30'

Field size

0°25' × 0°19'

Equipment
  • Celestron 235mm EdgeHD SCT
  • Celestron CGEM Mount
  • Celestron Nightscape 10100 RGB CCD
  • Off-Axis Guiding with LoadstarX2 Guide Camera
Exposure

46x300s

Location

St Austell, Cornwall UK

Target name

NGC7635

Title

The Bubble

About this image

The famous 'bubble' created by the shock wave of the stellar wind from SAO 20575 impacting on the extensive nebula surrounding NGC7635.

This image was actually made using a total of 46 five-minute exposures.  Half of the exposures were captured on 6th September 2015 using a 203mm Celestron C8 SCT at f/4.6.  The others were captured on 29th September 2017 using a 235mm Celestron 9.25 at f/10.

Image calibration, registration, integration and processing was carried out using PixInsight.

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