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NGC 7635 - Bubble & the Cluster

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About this observation
Observer
John Hughes
Time of observation
17/09/2019 - 23:06
Object
NGC 7635
Observing location
North Essex
Equipment
William Optics Z103ED
Skywatcher NEQ6 R Pro mount
ZWO ASI1600mm Pro Cooled camera
Baader Ha, Oiii and Sii barrow band filters
Exposure
Gain 139, Offset 50
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The image above represents my interpretation of NGC 7635 in the Hubble Palette and has been framed to also capture M52 an open star cluster. Both targets are located  in the constellation of Cassiopeia. The acquisition details are as follows;

William Optics Z103ED scope with guiding provided by the William Optics 50mm guidescope and ASI290mm- mini guide camera.

Imaged with the ZWO ASI1600mm Pro cooled camera using Baader 1.25” narrowband filters - Ha 7nm, Oiii 8.5nm and Sii 8nm. Acquisition software was Astrophotography Tool and guidance provided by PHD2.

Sub frames all taken at a gain of 139 and offset of 50. All 5 minute exposures;

Ha x 41

Oiii x 35

Sii x 40

Total integration time 9.6 hours.

Backfocus remains an issue though I am gradually getting there with modest adjustments each time I image.

Thanks for checking in.

John

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