Centaurus A

[Geoff45 (Geoff)]

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 (Laurie)]

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 (Geoff)]

Originally Posted by 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.

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 (Michael)]

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