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View Full Version here: : Double stacked Lunt filter first light.


Paddy
30-05-2014, 08:53 PM
Took delivery of a second Lunt filter to double stack with my existing filter on the ED80 a while back and haven't seen much of the sun since. Today was my first light with it and I am well pleased.

Mosaic of 3 images for surface detail and 2 for proms using the ZWO AMI 130 camera.

Any suggestions much appreciated.

barx1963
30-05-2014, 10:14 PM
Paddy!!:D

You'll make an imager yet!!

Malcolm

Peter Ward
30-05-2014, 10:16 PM
You'll need to rotate the etalons with respect to one another to null-out any hot-spots.

You've got an instrumental asymmetry that needs fixing. ;)

Limb darkening occurs symmetrically around the edge of the sun...if it doesn't look like that, the filter is skewed/off-centre.

Nice contrast just the same. :thumbsup:

Paddy
01-06-2014, 07:39 PM
Thanks gentlemen and especially for the advice Peter!