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PeterW

Sun 10-5-11

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First try at combining disk and proms together, yes I know it is not as good as it could be! Nice big prom and still lots on the disk!

Cheers

PEterW

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Looks great to me! What did you use to capture and then process the image(s)?

Stu.

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Lunt 60mm with DMK41 prime focus on a hand tracked alt-az mount, processed in Registax6 (Default settings, then some wavelet magic), cut and paste in GIMP.

Cheers

PEterW

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Thanks. I'm looking to upgrade from webcam to DMK 31 or 41. Not sure which. Looks like the 41 makes a good show of it and the larger area seems to me to be an advantage that outweighs the slower frame rate.

Stu.

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i typically gather 500 frames in less than a minute. at prime focus on a Lunt60 you get 90% of the disk, so i have to stick 2 images to get a full disk. there is a new dmk51 which has a slightly larger sensor still, not sure if that can do a full disk in one go? For lunar and solar you'll enjoy the larger sensor and the lack of needing to worry about colour data. If you are going to do planetary then maybe the smaller sensor would be better as you tend to want a higher frame rate, but either way you'll have a good cam.

Cheers

PEterW

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Nice effort!

What I do with disk / prom composites is to scale up the disk image by 1.5% ... this helps cover the "gap" that tends to develop at the limb, without actually obscuring any of the detail in the chromospheric image.

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Aside from the disc sizes being a bit off tandem it's pretty convincing.

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