From: Ray Byrne <ray@in4media.co.uk>
Date: November 3, 2008 11:47:56 AM MST
To: Astro_IIDC@yahoogroups.com
Subject: Re: [Astro_IIDC] sunday's sun
Hi Alan,
What a "lush" image! I could see that you were imaging from a suburban situation (as most of us do) so all the more for that. I'm keen on creating hi-res Solar stuff and I find what you do an inspiration, although I not sure if I have the dedication required to get near what you do. Thanks for sharing your settings info it's on file :o]
All the Best
Ray Byrne
On 3 Nov 2008, at 15:03, Alan Friedman wrote:
Hi all,
Here is an image I made yesterday of the sun in Ha:
http://www.avertedimagination.com/img_pages/sun_110208.html
The data was captured in Astro IIDC 4.0 and processed in 4.01 Alpha 8.
I used 36 multiple alignment points to improve the sharpness around
the disk of the sun (seeing was highly turbulent as the sun, now at 32
degrees altitude, passes just a bit above the rooftops with their
winter heating season distortion). I used the batch processing feature
to prepare the 36 MAP images. Final assembly of the pieces into a
single image was done manually in Photoshop.
This is a tough project for software to handle due to the high degree
of morphing from frame to frame in daytime seeing. I was surprised to
get such a good result with automated processing.
Settings: Lunar/Solar for alignment, manual selection, gaussian blur
applied for sharpness and alignment, center quadrant was used for
sharpness evaluation, CI cutoff was 70% - final selection was 90
frames. Pixel matching tolerance was set to medium low. Frames stacked
for each MAP image was in the range of 64-85, with 85 frames
successfully stacked in all but 4 of the images.
best wishes,
Alan
ATB
Ray Byrne
in4media | graphic and website DESIGN
T: 01793 435704