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The Needle Galaxy, NGC 4565

NGC 4565

May 15th, 2018

This image looks much better than the last couple, for multiple reasons. For one, I realized I needed more integration when imaging from the city. I’ve figured out that I like the exposure times of 120s for CLS data and 60s for RGB, even at F/9. Also, I need at least 1hr per RGB channel and at least 3 for CLS. More importantly, I’ve finally fixed the collimation of my AT6RC. It’s not perfect, and the secondary needs to be adjusted quite often, but it’s much better.

NGC 4565, or the Needle Galaxy, is an edge on spiral galaxy in Coma Berenices, part of the coma cluster. It is estimated to be located around 40 million light years away from earth.

Captured on: May 9th, 10th, and 11th, 2018

AT6RC, 1370mm @ F/9
ZWO ASI 1600mm-C
ZWO filters
Skywatcher NEQ6 Pro
Orion SSAG


Luminance: Astronomik CLS filter(1.25″), 135x120s, -15C, 1×1 bin, Unity Gain
Red: ZWO Red filter(1.25″), 60x60s, -15C, 1×1 bin, Unity Gain
Green: ZWO Green filter(1.25″), 60x60s, -15C, 1×1 bin, Unity Gain
Blue: ZWO Blue filter(1.25″), 60x60s, -15C, 1×1 bin, Unity Gain

Total Acquisition of 7.5hrs


Thanks for looking!