April 17, 2016: The BIG mosaic in H-alpha

[michael.h.f.wilkinson]

Finally got rid of (most of) some uneven surface due to problems with flats. Each of the 42 panes consists of 100 frames stacked out of 1000, taken with the usual Solar Spectrum filter + APM80mm F/6 + Baader TZ-4, plus Beloptik tri-band ERF, plus ASI174MM. Stacked in AS!2, sharpened in ImPPG, stitched in AutoStitch, and postprocessing in Gimp.

Grey scale:

Pseudo colour:

Part inverted:

Part inverted + pseudo colour:

Do check out the full size version by clicking on them

[Davey-T]

Lovely images Michael, full size is awesome trouble is I've only got a 14" laptop 

Dave

[Guest]

Very good - really like the black and white versions too 

David

 

[kev]

Nice! 8-)

Did anyone here catch the flare?

kev

 

[laudropb]

Very nice set.

[Paul73]

I clicked "Like" before I looked at the full size files.

Unfortunately there is no "Really really impressed" button.

Splendid work Michael (as always)!

Paul

[David Smith]

Fantastic disks Michael. I have new found respect for your 42 pane disks after completing a mere 22 panes over the weekend

[Pete Presland]

Good looking discs.

[michael.h.f.wilkinson]

Thanks everyone!

4 hours ago, David Smith said:

Fantastic disks Michael. I have new found respect for your 42 pane disks after completing a mere 22 panes over the weekend

42 is not really any harder than 22, I find, if your camera rattles along at 120-140 FPS. It takes 7-10s to complete each AVI or SER, It is just a matter of moving across the disk systematically. After capture AS!2 needs to do more work, but I myself only have to select the right files. Same holds for ImPPG and AutoStitch: both do batch processing, so you select 42 files rather than 22.

[David Smith]

Stop it, now I need a new camera My little QHY manages just 30 FPS at best.

I know what you mean though, most of the processing is done in 2 or 3 steps as AS!2 and ImPPG batch process all the data.

[michael.h.f.wilkinson]

1 minute ago, David Smith said:

Stop it, now I need a new camera My little QHY manages just 30 FPS at best.

I know what you mean though, most of the processing is done in 2 or 3 steps as AS!2 and ImPPG batch process all the data.

Not just a new camera, a new hard disk (SSD) as well, to keep up with the 450MB/s the ASI174MM spews.

[Stu]

Wonderful stuff Michael. The full size images are just crazy! I love the detail in the proms, particularly the one at about 4 o'clock

[David Smith]

6 minutes ago, michael.h.f.wilkinson said:

Not just a new camera, a new hard disk (SSD) as well, to keep up with the 450MB/s the ASI174MM spews.

My wallet just fell out with you

[michael.h.f.wilkinson]

14 minutes ago, David Smith said:

My wallet just fell out with you

I actually got good results with the little DMK21, running at 60 FPS, but with only a tiny 640x480 chip. Acquisition times were longer but you could still get good results, like this 36 paner with the LS35