3 replies to this topic

[rkinnett]

This HOO composition combines 2 hours integration in Ha (12x 600s) with 3 hours in O-III (18x 600s). 

 

Captured with C9.25 on an EQ6R, with f/6.3 reducer, off-axis guider, and asi1600mm.

 

Seeing was better than average, and guiding was better than expected for a somewhat low-elevation target (36 deg at meridian), averaging ~0.7" RMS per axis.

 

This version is preliminary.  I am very slowly learning how to use PixInsight, and it's grueling work.  For this preliminary version, I stacked, pre-processed, and combined in PI, then stretched and sharpened in Photoshop.  I'm still working through tutorials for non-linear processing in PI and I expect that to do a much finer job with noise control and sharpening.  Also experimenting with Starnet.

 

The attached copy is reduced to 25% and compressed for CN.

 

Full-res here:  https://www.astrobin.com/slkdxu/D/

 

Thanks for looking

Attached Thumbnails

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Edited by rkinnett, 20 January 2021 - 02:32 PM.

[Mert]

That's a great image, very well processed and captured, great detail there

Edited by Mert, 21 January 2021 - 08:14 AM.

[Tapio]

I think you should experiment more with Starnet as stars look kind of strange (small stars look like single color dots).

And there are halos around brighter stars.

[rkinnett]

Thanks Mert!

 

 

I think you should experiment more with Starnet as stars look kind of strange (small stars look like single color dots).

And there are halos around brighter stars.

Agreed.  Thanks!