Centaurus A

[Geoff45]

This one comes from the last new moon weekend:
http://www.astrobin.com/39412/0/?mod=none
Details:
Telescope: William Optics ZS110
Camera: QSI540wsg
Exposure: 5 x 10min each of LRGB.
Comments welcome.
Geoff

[Larryp]

Sweet image, Geoff!

[David Fitz-Henr]

That's a great image Geoff; good details and you've brought out the extended halo as well!

[alpal]

Very nice indeed - just a pity about the tilt or coma or
whatever has caused the elongation of stars on the top left & right of the frame -
& also bottom right hand corner

Well done.

[Geoff45]

Yes, it's field curvature plus some focuser tilt--driving me nuts trying to at least get balance in all corners. I should investigate a FF.
Geoff

[alpal]

Hi Geoff,
Sometimes it can be just the way you screw everything together.
The scope needs to be upside down & pointing directly upwards
when you screw threads in for spacers & the camera.
We are in a difficult hobby when even a 5 micron tilt can cause problems.
Best of luck with it as I'm sure you'll iron it out.

cheers
Allan

[strongmanmike]

Really good result Geoff, and yes indeed, you can see some of the elusive outer perpendicular extensions :clap:...Wiruna?

Just that dark halo around the main galaxy star halo that has me a tad quizzical...?

Mike

[Ross G]

A great photo Geoff.

Amazing detail.


Ross.