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Some time back I bought an Astronomik 12 nm Ha filter to fill up the last slot in my 5 position filter wheel. I haven't done NB imaging before, and am at the moment more into galaxies. But I figured I'd use it to catch H regions in distant galaxies.

In January during a clear night I tested the filter on the Heart nebula. I wasn't impressed with the results and put the data aside.

This recent Ha image by @gorann prompted me to revisit the data and process it.

So here's my first attempt at Ha, the central region of the Heart nebula, ic 1805.

ic1805_LF_Ha_clone_proc.thumb.jpg.b9081e19b791126cca6cddb83eaad9e5.jpg

(click on the image to see a larger version. But pixel peepers be warned.)

Focus was off and tracking was poor, resulting in a soft image and funny star shapes.

Details:

SW 150PDS on SW AZ-EQ6 mount, guided

ZWO ASI 174MM-Cool with Astronomik 12 nm ha filter

15 x 240 seconds subs at gain 0, -30 C

total integration time: 1 hour

processed in PixInsight

(Now that I see the image on the server, it has a bright right edge which was not at all as obvious in the original.)

Edited by wimvb
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4 hours ago, Craney said:

You have captured the 'Heart of the Heart'.....  go wide screen  for the full effect.   

5a96f408d58df_Heart2HaGB66mins.thumb.jpg.99c7f4fb81dd3132f36a73a9498e2e4e.jpg

This is taken with a DSLR and some Ha added .  (FL. 0.8x500mm = 400mm )

Yes, that's exactly what I was aiming for. I like the detail in this region; it can be stunning in high resolution (ie when seeing, tracking and focusing is spot on).

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